/* Copyright (C) 2008-2020 Kentoku Shiba
   Copyright (C) 2019-2022 MariaDB corp

  This program is free software; you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation; version 2 of the License.

  This program is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details.

  You should have received a copy of the GNU General Public License
  along with this program; if not, write to the Free Software
  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335 USA */

#define MYSQL_SERVER 1
#include <my_global.h>
#include "mysql_version.h"
#include "spd_environ.h"
#include "sql_priv.h"
#include "probes_mysql.h"
#include "my_getopt.h"
#include "sql_class.h"
#include "sql_partition.h"
#include "sql_servers.h"
#include "sql_select.h"
#include "tztime.h"
#include "sql_parse.h"
#include "spd_err.h"
#include "spd_param.h"
#include "spd_db_include.h"
#include "spd_include.h"
#include "spd_sys_table.h"
#include "ha_spider.h"
#include "spd_trx.h"
#include "spd_db_conn.h"
#include "spd_table.h"
#include "spd_conn.h"
#include "spd_ping_table.h"
#include "spd_direct_sql.h"
#include "spd_malloc.h"
#include "spd_group_by_handler.h"
#include "spd_init_query.h"

/* Background thread management */
#ifdef SPIDER_HAS_NEXT_THREAD_ID
#define SPIDER_set_next_thread_id(A)
MYSQL_THD create_thd();
void destroy_thd(MYSQL_THD thd);
#else
ulong *spd_db_att_thread_id;
inline void SPIDER_set_next_thread_id(THD *A)
{
  pthread_mutex_lock(&LOCK_thread_count);
  A->thread_id = (*spd_db_att_thread_id)++;
  pthread_mutex_unlock(&LOCK_thread_count);
}
MYSQL_THD create_thd()
{
  THD *thd = SPIDER_new_THD(next_thread_id());
  if (thd)
  {
    thd->thread_stack = (char*) &thd;
    thd->store_globals();
    thd->set_command(COM_DAEMON);
    thd->security_ctx->host_or_ip = "";
  }
  return thd;
}
void destroy_thd(MYSQL_THD thd)
{
  delete thd;
}
#endif
inline MYSQL_THD spider_create_sys_thd(SPIDER_THREAD *thread)
{
  THD *thd = create_thd();
  if (thd)
  {
    SPIDER_set_next_thread_id(thd);
    thd->mysys_var->current_cond = &thread->cond;
    thd->mysys_var->current_mutex = &thread->mutex;
  }
  return thd;
}
inline void spider_destroy_sys_thd(MYSQL_THD thd)
{
  destroy_thd(thd);
}
inline MYSQL_THD spider_create_thd()
{
  THD *thd;
  my_thread_init();
  if (!(thd = new THD(next_thread_id())))
    my_thread_end();
  else
  {
#ifdef HAVE_PSI_INTERFACE
    mysql_thread_set_psi_id(thd->thread_id);
#endif
    thd->thread_stack = (char *) &thd;
    thd->store_globals();
  }
  return thd;
}
inline void spider_destroy_thd(MYSQL_THD thd)
{
  delete thd;
}

#ifdef SPIDER_XID_USES_xid_cache_iterate
#else
#ifdef XID_CACHE_IS_SPLITTED
uint *spd_db_att_xid_cache_split_num;
#endif
pthread_mutex_t *spd_db_att_LOCK_xid_cache;
HASH *spd_db_att_xid_cache;
#endif
struct charset_info_st *spd_charset_utf8mb3_bin;
const char **spd_defaults_extra_file;
const char **spd_defaults_file;
const char **spd_mysqld_unix_port;
uint *spd_mysqld_port;
bool volatile *spd_abort_loop;
Time_zone *spd_tz_system;
extern long spider_conn_mutex_id;
handlerton *spider_hton_ptr;
SPIDER_DBTON spider_dbton[SPIDER_DBTON_SIZE];
extern SPIDER_DBTON spider_dbton_mysql;
extern SPIDER_DBTON spider_dbton_mariadb;
#ifdef HAVE_ORACLE_OCI
extern SPIDER_DBTON spider_dbton_oracle;
#endif
#ifndef WITHOUT_SPIDER_BG_SEARCH
SPIDER_THREAD *spider_table_sts_threads;
SPIDER_THREAD *spider_table_crd_threads;
#endif
extern volatile ulonglong spider_mon_table_cache_version;
extern volatile ulonglong spider_mon_table_cache_version_req;
extern ulonglong spider_conn_id;
extern Time_zone *UTC;
extern ulonglong spider_thread_id;

#ifdef HAVE_PSI_INTERFACE
PSI_mutex_key spd_key_mutex_tbl;
PSI_mutex_key spd_key_mutex_init_error_tbl;
#ifdef WITH_PARTITION_STORAGE_ENGINE
PSI_mutex_key spd_key_mutex_wide_share;
#endif
PSI_mutex_key spd_key_mutex_lgtm_tblhnd_share;
PSI_mutex_key spd_key_mutex_conn;
PSI_mutex_key spd_key_mutex_open_conn;
PSI_mutex_key spd_key_mutex_allocated_thds;
PSI_mutex_key spd_key_mutex_mon_table_cache;
PSI_mutex_key spd_key_mutex_udf_table_mon;
PSI_mutex_key spd_key_mutex_mta_conn;
#ifndef WITHOUT_SPIDER_BG_SEARCH
PSI_mutex_key spd_key_mutex_bg_conn_chain;
PSI_mutex_key spd_key_mutex_bg_conn_sync;
PSI_mutex_key spd_key_mutex_bg_conn;
PSI_mutex_key spd_key_mutex_bg_job_stack;
PSI_mutex_key spd_key_mutex_bg_mon;
PSI_mutex_key spd_key_mutex_bg_direct_sql;
#endif
PSI_mutex_key spd_key_mutex_mon_list_caller;
PSI_mutex_key spd_key_mutex_mon_list_receptor;
PSI_mutex_key spd_key_mutex_mon_list_monitor;
PSI_mutex_key spd_key_mutex_mon_list_update_status;
PSI_mutex_key spd_key_mutex_share;
PSI_mutex_key spd_key_mutex_share_sts;
PSI_mutex_key spd_key_mutex_share_crd;
PSI_mutex_key spd_key_mutex_share_auto_increment;
#ifdef WITH_PARTITION_STORAGE_ENGINE
PSI_mutex_key spd_key_mutex_wide_share_sts;
PSI_mutex_key spd_key_mutex_wide_share_crd;
#endif
PSI_mutex_key spd_key_mutex_udf_table;
PSI_mutex_key spd_key_mutex_mem_calc;
PSI_mutex_key spd_key_thread_id;
PSI_mutex_key spd_key_conn_id;
PSI_mutex_key spd_key_mutex_ipport_count;
PSI_mutex_key spd_key_mutex_conn_i;
#ifndef WITHOUT_SPIDER_BG_SEARCH
PSI_mutex_key spd_key_mutex_bg_stss;
PSI_mutex_key spd_key_mutex_bg_crds;
#endif
PSI_mutex_key spd_key_mutex_conn_loop_check;

static PSI_mutex_info all_spider_mutexes[]=
{
  { &spd_key_mutex_tbl, "tbl", PSI_FLAG_GLOBAL},
  { &spd_key_mutex_init_error_tbl, "init_error_tbl", PSI_FLAG_GLOBAL},
#ifdef WITH_PARTITION_STORAGE_ENGINE
  { &spd_key_mutex_wide_share, "wide_share", PSI_FLAG_GLOBAL},
#endif
  { &spd_key_mutex_lgtm_tblhnd_share, "lgtm_tblhnd_share", PSI_FLAG_GLOBAL},
  { &spd_key_mutex_conn, "conn", PSI_FLAG_GLOBAL},
  { &spd_key_mutex_open_conn, "open_conn", PSI_FLAG_GLOBAL},
  { &spd_key_mutex_allocated_thds, "allocated_thds", PSI_FLAG_GLOBAL},
  { &spd_key_mutex_mon_table_cache, "mon_table_cache", PSI_FLAG_GLOBAL},
  { &spd_key_mutex_udf_table_mon, "udf_table_mon", PSI_FLAG_GLOBAL},
  { &spd_key_mutex_mem_calc, "mem_calc", PSI_FLAG_GLOBAL},
  { &spd_key_thread_id, "thread_id", PSI_FLAG_GLOBAL},
  { &spd_key_conn_id, "conn_id", PSI_FLAG_GLOBAL},
  { &spd_key_mutex_ipport_count, "ipport_count", PSI_FLAG_GLOBAL},
#ifndef WITHOUT_SPIDER_BG_SEARCH
  { &spd_key_mutex_bg_stss, "bg_stss", PSI_FLAG_GLOBAL},
  { &spd_key_mutex_bg_crds, "bg_crds", PSI_FLAG_GLOBAL},
#endif
  { &spd_key_mutex_conn_i, "conn_i", 0},
  { &spd_key_mutex_mta_conn, "mta_conn", 0},
#ifndef WITHOUT_SPIDER_BG_SEARCH
  { &spd_key_mutex_bg_conn_chain, "bg_conn_chain", 0},
  { &spd_key_mutex_bg_conn_sync, "bg_conn_sync", 0},
  { &spd_key_mutex_bg_conn, "bg_conn", 0},
  { &spd_key_mutex_bg_job_stack, "bg_job_stack", 0},
  { &spd_key_mutex_bg_mon, "bg_mon", 0},
  { &spd_key_mutex_bg_direct_sql, "bg_direct_sql", 0},
#endif
  { &spd_key_mutex_mon_list_caller, "mon_list_caller", 0},
  { &spd_key_mutex_mon_list_receptor, "mon_list_receptor", 0},
  { &spd_key_mutex_mon_list_monitor, "mon_list_monitor", 0},
  { &spd_key_mutex_mon_list_update_status, "mon_list_update_status", 0},
  { &spd_key_mutex_share, "share", 0},
  { &spd_key_mutex_share_sts, "share_sts", 0},
  { &spd_key_mutex_share_crd, "share_crd", 0},
  { &spd_key_mutex_share_auto_increment, "share_auto_increment", 0},
#ifdef WITH_PARTITION_STORAGE_ENGINE
  { &spd_key_mutex_wide_share_sts, "wide_share_sts", 0},
  { &spd_key_mutex_wide_share_crd, "wide_share_crd", 0},
#endif
  { &spd_key_mutex_udf_table, "udf_table", 0},
  { &spd_key_mutex_conn_loop_check, "conn_loop_check", 0},
};

#ifndef WITHOUT_SPIDER_BG_SEARCH
PSI_cond_key spd_key_cond_bg_conn_sync;
PSI_cond_key spd_key_cond_bg_conn;
PSI_cond_key spd_key_cond_bg_sts;
PSI_cond_key spd_key_cond_bg_sts_sync;
PSI_cond_key spd_key_cond_bg_crd;
PSI_cond_key spd_key_cond_bg_crd_sync;
PSI_cond_key spd_key_cond_bg_mon;
PSI_cond_key spd_key_cond_bg_mon_sleep;
PSI_cond_key spd_key_cond_bg_direct_sql;
#endif
PSI_cond_key spd_key_cond_udf_table_mon;
PSI_cond_key spd_key_cond_conn_i;
#ifndef WITHOUT_SPIDER_BG_SEARCH
PSI_cond_key spd_key_cond_bg_stss;
PSI_cond_key spd_key_cond_bg_sts_syncs;
PSI_cond_key spd_key_cond_bg_crds;
PSI_cond_key spd_key_cond_bg_crd_syncs;
#endif

static PSI_cond_info all_spider_conds[] = {
#ifndef WITHOUT_SPIDER_BG_SEARCH
  {&spd_key_cond_bg_conn_sync, "bg_conn_sync", 0},
  {&spd_key_cond_bg_conn, "bg_conn", 0},
  {&spd_key_cond_bg_sts, "bg_sts", 0},
  {&spd_key_cond_bg_sts_sync, "bg_sts_sync", 0},
  {&spd_key_cond_bg_crd, "bg_crd", 0},
  {&spd_key_cond_bg_crd_sync, "bg_crd_sync", 0},
  {&spd_key_cond_bg_mon, "bg_mon", 0},
  {&spd_key_cond_bg_mon_sleep, "bg_mon_sleep", 0},
  {&spd_key_cond_bg_direct_sql, "bg_direct_sql", 0},
#endif
  {&spd_key_cond_udf_table_mon, "udf_table_mon", 0},
  {&spd_key_cond_conn_i, "conn_i", 0},
#ifndef WITHOUT_SPIDER_BG_SEARCH
  {&spd_key_cond_bg_stss, "bg_stss", 0},
  {&spd_key_cond_bg_sts_syncs, "bg_sts_syncs", 0},
  {&spd_key_cond_bg_crds, "bg_crds", 0},
  {&spd_key_cond_bg_crd_syncs, "bg_crd_syncs", 0},
#endif
};

#ifndef WITHOUT_SPIDER_BG_SEARCH
PSI_thread_key spd_key_thd_bg;
PSI_thread_key spd_key_thd_bg_sts;
PSI_thread_key spd_key_thd_bg_crd;
PSI_thread_key spd_key_thd_bg_mon;
PSI_thread_key spd_key_thd_bg_stss;
PSI_thread_key spd_key_thd_bg_crds;
#endif

static PSI_thread_info all_spider_threads[] = {
#ifndef WITHOUT_SPIDER_BG_SEARCH
  {&spd_key_thd_bg, "bg", 0},
  {&spd_key_thd_bg_sts, "bg_sts", 0},
  {&spd_key_thd_bg_crd, "bg_crd", 0},
  {&spd_key_thd_bg_mon, "bg_mon", 0},
  {&spd_key_thd_bg_stss, "bg_stss", 0},
  {&spd_key_thd_bg_crds, "bg_crds", 0},
#endif
};
#endif

extern HASH spider_open_connections;
extern HASH spider_ipport_conns;
extern uint spider_open_connections_id;
extern const char *spider_open_connections_func_name;
extern const char *spider_open_connections_file_name;
extern ulong spider_open_connections_line_no;
extern pthread_mutex_t spider_conn_mutex;
extern HASH *spider_udf_table_mon_list_hash;
extern uint spider_udf_table_mon_list_hash_id;
extern const char *spider_udf_table_mon_list_hash_func_name;
extern const char *spider_udf_table_mon_list_hash_file_name;
extern ulong spider_udf_table_mon_list_hash_line_no;
extern pthread_mutex_t *spider_udf_table_mon_mutexes;
extern pthread_cond_t *spider_udf_table_mon_conds;
extern pthread_mutex_t spider_open_conn_mutex;
extern pthread_mutex_t spider_mon_table_cache_mutex;
extern DYNAMIC_ARRAY spider_mon_table_cache;
extern uint spider_mon_table_cache_id;
extern const char *spider_mon_table_cache_func_name;
extern const char *spider_mon_table_cache_file_name;
extern ulong spider_mon_table_cache_line_no;

HASH spider_open_tables;
uint spider_open_tables_id;
const char *spider_open_tables_func_name;
const char *spider_open_tables_file_name;
ulong spider_open_tables_line_no;
pthread_mutex_t spider_tbl_mutex;
HASH spider_init_error_tables;
uint spider_init_error_tables_id;
const char *spider_init_error_tables_func_name;
const char *spider_init_error_tables_file_name;
ulong spider_init_error_tables_line_no;
pthread_mutex_t spider_init_error_tbl_mutex;

extern pthread_mutex_t spider_thread_id_mutex;
extern pthread_mutex_t spider_conn_id_mutex;
extern pthread_mutex_t spider_ipport_conn_mutex;

#ifdef WITH_PARTITION_STORAGE_ENGINE
HASH spider_open_wide_share;
uint spider_open_wide_share_id;
const char *spider_open_wide_share_func_name;
const char *spider_open_wide_share_file_name;
ulong spider_open_wide_share_line_no;
pthread_mutex_t spider_wide_share_mutex;
#endif

HASH spider_lgtm_tblhnd_share_hash;
uint spider_lgtm_tblhnd_share_hash_id;
const char *spider_lgtm_tblhnd_share_hash_func_name;
const char *spider_lgtm_tblhnd_share_hash_file_name;
ulong spider_lgtm_tblhnd_share_hash_line_no;
pthread_mutex_t spider_lgtm_tblhnd_share_mutex;

HASH spider_allocated_thds;
uint spider_allocated_thds_id;
const char *spider_allocated_thds_func_name;
const char *spider_allocated_thds_file_name;
ulong spider_allocated_thds_line_no;
pthread_mutex_t spider_allocated_thds_mutex;

#ifndef WITHOUT_SPIDER_BG_SEARCH
pthread_attr_t spider_pt_attr;
#endif

extern pthread_mutex_t spider_mem_calc_mutex;

extern const char *spider_alloc_func_name[SPIDER_MEM_CALC_LIST_NUM];
extern const char *spider_alloc_file_name[SPIDER_MEM_CALC_LIST_NUM];
extern ulong      spider_alloc_line_no[SPIDER_MEM_CALC_LIST_NUM];
extern ulonglong  spider_total_alloc_mem[SPIDER_MEM_CALC_LIST_NUM];
extern longlong   spider_current_alloc_mem[SPIDER_MEM_CALC_LIST_NUM];
extern ulonglong  spider_alloc_mem_count[SPIDER_MEM_CALC_LIST_NUM];
extern ulonglong  spider_free_mem_count[SPIDER_MEM_CALC_LIST_NUM];

static char spider_wild_many = '%', spider_wild_one = '_',
  spider_wild_prefix='\\';

static char spider_unique_id_buf[1 + 12 + 1 + (16 * 2) + 1 + 1];
LEX_CSTRING spider_unique_id;

// for spider_open_tables
uchar *spider_tbl_get_key(
  SPIDER_SHARE *share,
  size_t *length,
  my_bool not_used __attribute__ ((unused))
) {
  DBUG_ENTER("spider_tbl_get_key");
  *length = share->table_name_length;
  DBUG_RETURN((uchar*) share->table_name);
}

uchar *spider_wide_share_get_key(
  SPIDER_WIDE_SHARE *share,
  size_t *length,
  my_bool not_used __attribute__ ((unused))
) {
  DBUG_ENTER("spider_wide_share_get_key");
  *length = share->table_name_length;
  DBUG_RETURN((uchar*) share->table_name);
}

uchar *spider_lgtm_tblhnd_share_hash_get_key(
  SPIDER_LGTM_TBLHND_SHARE *share,
  size_t *length,
  my_bool not_used __attribute__ ((unused))
) {
  DBUG_ENTER("spider_lgtm_tblhnd_share_hash_get_key");
  *length = share->table_name_length;
  DBUG_RETURN((uchar*) share->table_name);
}

uchar *spider_link_get_key(
  SPIDER_LINK_FOR_HASH *link_for_hash,
  size_t *length,
  my_bool not_used __attribute__ ((unused))
) {
  DBUG_ENTER("spider_link_get_key");
  *length = link_for_hash->db_table_str->length();
  DBUG_RETURN((uchar*) link_for_hash->db_table_str->ptr());
}

uchar *spider_ha_get_key(
  ha_spider *spider,
  size_t *length,
  my_bool not_used __attribute__ ((unused))
) {
  DBUG_ENTER("spider_ha_get_key");
  *length = spider->share->table_name_length;
  DBUG_RETURN((uchar*) spider->share->table_name);
}

uchar *spider_udf_tbl_mon_list_key(
  SPIDER_TABLE_MON_LIST *table_mon_list,
  size_t *length,
  my_bool not_used __attribute__ ((unused))
) {
  DBUG_ENTER("spider_udf_tbl_mon_list_key");
  DBUG_PRINT("info",("spider hash key=%s", table_mon_list->key));
  DBUG_PRINT("info",("spider hash key length=%u", table_mon_list->key_length));
  *length = table_mon_list->key_length;
  DBUG_RETURN((uchar*) table_mon_list->key);
}

uchar *spider_allocated_thds_get_key(
  THD *thd,
  size_t *length,
  my_bool not_used __attribute__ ((unused))
) {
  DBUG_ENTER("spider_allocated_thds_get_key");
  *length = sizeof(THD *);
  DBUG_RETURN((uchar*) thd);
}

#ifdef HAVE_PSI_INTERFACE
static void init_spider_psi_keys()
{
  DBUG_ENTER("init_spider_psi_keys");
  if (PSI_server == NULL)
    DBUG_VOID_RETURN;

  PSI_server->register_mutex("spider", all_spider_mutexes,
    array_elements(all_spider_mutexes));
  PSI_server->register_cond("spider", all_spider_conds,
    array_elements(all_spider_conds));
  PSI_server->register_thread("spider", all_spider_threads,
    array_elements(all_spider_threads));
  DBUG_VOID_RETURN;
}
#endif

int spider_get_server(
  SPIDER_SHARE *share,
  int link_idx
) {
  MEM_ROOT mem_root;
  int error_num, length;
  FOREIGN_SERVER *server, server_buf;
  DBUG_ENTER("spider_get_server");
  SPD_INIT_ALLOC_ROOT(&mem_root, 128, 0, MYF(MY_WME));

  if (!(server
       = get_server_by_name(&mem_root, share->server_names[link_idx],
         &server_buf)))
  {
    error_num = ER_FOREIGN_SERVER_DOESNT_EXIST;
    goto error;
  }

  if (!share->tgt_wrappers[link_idx] && server->scheme)
  {
    share->tgt_wrappers_lengths[link_idx] = strlen(server->scheme);
    if (!(share->tgt_wrappers[link_idx] =
      spider_create_string(server->scheme,
      share->tgt_wrappers_lengths[link_idx])))
    {
      error_num = HA_ERR_OUT_OF_MEM;
      goto error;
    }
    DBUG_PRINT("info",("spider tgt_wrappers=%s",
      share->tgt_wrappers[link_idx]));
  }

  if (!share->tgt_hosts[link_idx] && server->host)
  {
    share->tgt_hosts_lengths[link_idx] = strlen(server->host);
    if (!(share->tgt_hosts[link_idx] =
      spider_create_string(server->host, share->tgt_hosts_lengths[link_idx])))
    {
      error_num = HA_ERR_OUT_OF_MEM;
      goto error;
    }
    DBUG_PRINT("info",("spider tgt_hosts=%s", share->tgt_hosts[link_idx]));
  }

  if (share->tgt_ports[link_idx] == -1)
  {
    share->tgt_ports[link_idx] = server->port;
    DBUG_PRINT("info",("spider tgt_ports=%ld", share->tgt_ports[link_idx]));
  }

  if (!share->tgt_sockets[link_idx] && server->socket)
  {
    share->tgt_sockets_lengths[link_idx] = strlen(server->socket);
    if (!(share->tgt_sockets[link_idx] =
      spider_create_string(server->socket,
      share->tgt_sockets_lengths[link_idx])))
    {
      error_num = HA_ERR_OUT_OF_MEM;
      goto error;
    }
    DBUG_PRINT("info",("spider tgt_sockets=%s", share->tgt_sockets[link_idx]));
  }

  if (!share->tgt_dbs[link_idx] && server->db && (length = strlen(server->db)))
  {
    share->tgt_dbs_lengths[link_idx] = length;
    if (!(share->tgt_dbs[link_idx] =
      spider_create_string(server->db, length)))
    {
      error_num = HA_ERR_OUT_OF_MEM;
      goto error;
    }
    DBUG_PRINT("info",("spider tgt_dbs=%s", share->tgt_dbs[link_idx]));
  }

  if (!share->tgt_usernames[link_idx] && server->username)
  {
    share->tgt_usernames_lengths[link_idx] = strlen(server->username);
    if (!(share->tgt_usernames[link_idx] =
      spider_create_string(server->username,
      share->tgt_usernames_lengths[link_idx])))
    {
      error_num = HA_ERR_OUT_OF_MEM;
      goto error;
    }
    DBUG_PRINT("info",("spider tgt_usernames=%s",
      share->tgt_usernames[link_idx]));
  }

  if (!share->tgt_passwords[link_idx] && server->password)
  {
    share->tgt_passwords_lengths[link_idx] = strlen(server->password);
    if (!(share->tgt_passwords[link_idx] =
      spider_create_string(server->password,
      share->tgt_passwords_lengths[link_idx])))
    {
      error_num = HA_ERR_OUT_OF_MEM;
      goto error;
    }
    DBUG_PRINT("info",("spider tgt_passwords=%s",
      share->tgt_passwords[link_idx]));
  }

  free_root(&mem_root, MYF(0));
  DBUG_RETURN(0);

error:
  free_root(&mem_root, MYF(0));
  my_error(error_num, MYF(0), share->server_names[link_idx]);
  DBUG_RETURN(error_num);
}

int spider_free_share_alloc(
  SPIDER_SHARE *share
) {
  int roop_count;
  DBUG_ENTER("spider_free_share_alloc");
  for (roop_count = SPIDER_DBTON_SIZE - 1; roop_count >= 0; roop_count--)
  {
    if (share->dbton_share[roop_count])
    {
      delete share->dbton_share[roop_count];
      share->dbton_share[roop_count] = NULL;
    }
  }
  if (share->server_names)
  {
    for (roop_count = 0; roop_count < (int) share->server_names_length;
      roop_count++)
    {
      if (share->server_names[roop_count])
        spider_free(spider_current_trx, share->server_names[roop_count],
          MYF(0));
    }
    spider_free(spider_current_trx, share->server_names, MYF(0));
  }
  if (share->tgt_table_names)
  {
    for (roop_count = 0; roop_count < (int) share->tgt_table_names_length;
      roop_count++)
    {
      if (share->tgt_table_names[roop_count])
        spider_free(spider_current_trx, share->tgt_table_names[roop_count],
          MYF(0));
    }
    spider_free(spider_current_trx, share->tgt_table_names, MYF(0));
  }
  if (share->tgt_dbs)
  {
    for (roop_count = 0; roop_count < (int) share->tgt_dbs_length;
      roop_count++)
    {
      if (share->tgt_dbs[roop_count])
        spider_free(spider_current_trx, share->tgt_dbs[roop_count], MYF(0));
    }
    spider_free(spider_current_trx, share->tgt_dbs, MYF(0));
  }
  if (share->tgt_hosts)
  {
    for (roop_count = 0; roop_count < (int) share->tgt_hosts_length;
      roop_count++)
    {
      if (share->tgt_hosts[roop_count])
        spider_free(spider_current_trx, share->tgt_hosts[roop_count], MYF(0));
    }
    spider_free(spider_current_trx, share->tgt_hosts, MYF(0));
  }
  if (share->tgt_usernames)
  {
    for (roop_count = 0; roop_count < (int) share->tgt_usernames_length;
      roop_count++)
    {
      if (share->tgt_usernames[roop_count])
        spider_free(spider_current_trx, share->tgt_usernames[roop_count],
          MYF(0));
    }
    spider_free(spider_current_trx, share->tgt_usernames, MYF(0));
  }
  if (share->tgt_passwords)
  {
    for (roop_count = 0; roop_count < (int) share->tgt_passwords_length;
      roop_count++)
    {
      if (share->tgt_passwords[roop_count])
        spider_free(spider_current_trx, share->tgt_passwords[roop_count],
          MYF(0));
    }
    spider_free(spider_current_trx, share->tgt_passwords, MYF(0));
  }
  if (share->tgt_sockets)
  {
    for (roop_count = 0; roop_count < (int) share->tgt_sockets_length;
      roop_count++)
    {
      if (share->tgt_sockets[roop_count])
        spider_free(spider_current_trx, share->tgt_sockets[roop_count],
          MYF(0));
    }
    spider_free(spider_current_trx, share->tgt_sockets, MYF(0));
  }
  if (share->tgt_wrappers)
  {
    for (roop_count = 0; roop_count < (int) share->tgt_wrappers_length;
      roop_count++)
    {
      if (share->tgt_wrappers[roop_count])
        spider_free(spider_current_trx, share->tgt_wrappers[roop_count],
          MYF(0));
    }
    spider_free(spider_current_trx, share->tgt_wrappers, MYF(0));
  }
  if (share->tgt_ssl_cas)
  {
    for (roop_count = 0; roop_count < (int) share->tgt_ssl_cas_length;
      roop_count++)
    {
      if (share->tgt_ssl_cas[roop_count])
        spider_free(spider_current_trx, share->tgt_ssl_cas[roop_count],
          MYF(0));
    }
    spider_free(spider_current_trx, share->tgt_ssl_cas, MYF(0));
  }
  if (share->tgt_ssl_capaths)
  {
    for (roop_count = 0; roop_count < (int) share->tgt_ssl_capaths_length;
      roop_count++)
    {
      if (share->tgt_ssl_capaths[roop_count])
        spider_free(spider_current_trx, share->tgt_ssl_capaths[roop_count],
          MYF(0));
    }
    spider_free(spider_current_trx, share->tgt_ssl_capaths, MYF(0));
  }
  if (share->tgt_ssl_certs)
  {
    for (roop_count = 0; roop_count < (int) share->tgt_ssl_certs_length;
      roop_count++)
    {
      if (share->tgt_ssl_certs[roop_count])
        spider_free(spider_current_trx, share->tgt_ssl_certs[roop_count],
          MYF(0));
    }
    spider_free(spider_current_trx, share->tgt_ssl_certs, MYF(0));
  }
  if (share->tgt_ssl_ciphers)
  {
    for (roop_count = 0; roop_count < (int) share->tgt_ssl_ciphers_length;
      roop_count++)
    {
      if (share->tgt_ssl_ciphers[roop_count])
        spider_free(spider_current_trx, share->tgt_ssl_ciphers[roop_count],
          MYF(0));
    }
    spider_free(spider_current_trx, share->tgt_ssl_ciphers, MYF(0));
  }
  if (share->tgt_ssl_keys)
  {
    for (roop_count = 0; roop_count < (int) share->tgt_ssl_keys_length;
      roop_count++)
    {
      if (share->tgt_ssl_keys[roop_count])
        spider_free(spider_current_trx, share->tgt_ssl_keys[roop_count],
          MYF(0));
    }
    spider_free(spider_current_trx, share->tgt_ssl_keys, MYF(0));
  }
  if (share->tgt_default_files)
  {
    for (roop_count = 0; roop_count < (int) share->tgt_default_files_length;
      roop_count++)
    {
      if (share->tgt_default_files[roop_count])
        spider_free(spider_current_trx, share->tgt_default_files[roop_count],
          MYF(0));
    }
    spider_free(spider_current_trx, share->tgt_default_files, MYF(0));
  }
  if (share->tgt_default_groups)
  {
    for (roop_count = 0; roop_count < (int) share->tgt_default_groups_length;
      roop_count++)
    {
      if (share->tgt_default_groups[roop_count])
        spider_free(spider_current_trx, share->tgt_default_groups[roop_count],
          MYF(0));
    }
    spider_free(spider_current_trx, share->tgt_default_groups, MYF(0));
  }
  if (share->tgt_dsns)
  {
    for (roop_count = 0; roop_count < (int) share->tgt_dsns_length;
      roop_count++)
    {
      if (share->tgt_dsns[roop_count])
        spider_free(spider_current_trx, share->tgt_dsns[roop_count],
          MYF(0));
    }
    spider_free(spider_current_trx, share->tgt_dsns, MYF(0));
  }
  if (share->tgt_pk_names)
  {
    for (roop_count = 0; roop_count < (int) share->tgt_pk_names_length;
      roop_count++)
    {
      if (share->tgt_pk_names[roop_count])
        spider_free(spider_current_trx, share->tgt_pk_names[roop_count],
          MYF(0));
    }
    spider_free(spider_current_trx, share->tgt_pk_names, MYF(0));
  }
  if (share->tgt_sequence_names)
  {
    for (roop_count = 0; roop_count < (int) share->tgt_sequence_names_length;
      roop_count++)
    {
      if (share->tgt_sequence_names[roop_count])
        spider_free(spider_current_trx, share->tgt_sequence_names[roop_count],
          MYF(0));
    }
    spider_free(spider_current_trx, share->tgt_sequence_names, MYF(0));
  }
  if (share->static_link_ids)
  {
    for (roop_count = 0; roop_count < (int) share->static_link_ids_length;
      roop_count++)
    {
      if (share->static_link_ids[roop_count])
        spider_free(spider_current_trx, share->static_link_ids[roop_count],
          MYF(0));
    }
    spider_free(spider_current_trx, share->static_link_ids, MYF(0));
  }
  if (share->bka_engine)
    spider_free(spider_current_trx, share->bka_engine, MYF(0));
  if (share->conn_keys)
    spider_free(spider_current_trx, share->conn_keys, MYF(0));
  if (share->tgt_ports)
    spider_free(spider_current_trx, share->tgt_ports, MYF(0));
  if (share->tgt_ssl_vscs)
    spider_free(spider_current_trx, share->tgt_ssl_vscs, MYF(0));
  if (share->link_statuses)
    spider_free(spider_current_trx, share->link_statuses, MYF(0));
#ifndef WITHOUT_SPIDER_BG_SEARCH
  if (share->monitoring_bg_flag)
    spider_free(spider_current_trx, share->monitoring_bg_flag, MYF(0));
  if (share->monitoring_bg_kind)
    spider_free(spider_current_trx, share->monitoring_bg_kind, MYF(0));
#endif
  if (share->monitoring_binlog_pos_at_failing)
    spider_free(spider_current_trx, share->monitoring_binlog_pos_at_failing, MYF(0));
  if (share->monitoring_flag)
    spider_free(spider_current_trx, share->monitoring_flag, MYF(0));
  if (share->monitoring_kind)
    spider_free(spider_current_trx, share->monitoring_kind, MYF(0));
  if (share->use_handlers)
    spider_free(spider_current_trx, share->use_handlers, MYF(0));
  if (share->connect_timeouts)
    spider_free(spider_current_trx, share->connect_timeouts, MYF(0));
  if (share->net_read_timeouts)
    spider_free(spider_current_trx, share->net_read_timeouts, MYF(0));
  if (share->net_write_timeouts)
    spider_free(spider_current_trx, share->net_write_timeouts, MYF(0));
  if (share->access_balances)
    spider_free(spider_current_trx, share->access_balances, MYF(0));
  if (share->bka_table_name_types)
    spider_free(spider_current_trx, share->bka_table_name_types, MYF(0));
  if (share->strict_group_bys)
    spider_free(spider_current_trx, share->strict_group_bys, MYF(0));
#ifndef WITHOUT_SPIDER_BG_SEARCH
  if (share->monitoring_bg_interval)
    spider_free(spider_current_trx, share->monitoring_bg_interval, MYF(0));
#endif
  if (share->monitoring_limit)
    spider_free(spider_current_trx, share->monitoring_limit, MYF(0));
  if (share->monitoring_sid)
    spider_free(spider_current_trx, share->monitoring_sid, MYF(0));
  if (share->alter_table.tmp_server_names)
    spider_free(spider_current_trx, share->alter_table.tmp_server_names,
      MYF(0));
  if (share->key_hint)
  {
    delete [] share->key_hint;
    share->key_hint = NULL;
  }
  if (share->wide_share)
    spider_free_wide_share(share->wide_share);
  DBUG_RETURN(0);
}

void spider_free_tmp_share_alloc(
  SPIDER_SHARE *share
) {
  DBUG_ENTER("spider_free_tmp_share_alloc");
  if (share->server_names && share->server_names[0])
  {
    spider_free(spider_current_trx, share->server_names[0], MYF(0));
    share->server_names[0] = NULL;
  }
  if (share->tgt_table_names && share->tgt_table_names[0])
  {
    spider_free(spider_current_trx, share->tgt_table_names[0], MYF(0));
    share->tgt_table_names[0] = NULL;
  }
  if (share->tgt_dbs && share->tgt_dbs[0])
  {
    spider_free(spider_current_trx, share->tgt_dbs[0], MYF(0));
    share->tgt_dbs[0] = NULL;
  }
  if (share->tgt_hosts && share->tgt_hosts[0])
  {
    spider_free(spider_current_trx, share->tgt_hosts[0], MYF(0));
    share->tgt_hosts[0] = NULL;
  }
  if (share->tgt_usernames && share->tgt_usernames[0])
  {
    spider_free(spider_current_trx, share->tgt_usernames[0], MYF(0));
    share->tgt_usernames[0] = NULL;
  }
  if (share->tgt_passwords && share->tgt_passwords[0])
  {
    spider_free(spider_current_trx, share->tgt_passwords[0], MYF(0));
    share->tgt_passwords[0] = NULL;
  }
  if (share->tgt_sockets && share->tgt_sockets[0])
  {
    spider_free(spider_current_trx, share->tgt_sockets[0], MYF(0));
    share->tgt_sockets[0] = NULL;
  }
  if (share->tgt_wrappers && share->tgt_wrappers[0])
  {
    spider_free(spider_current_trx, share->tgt_wrappers[0], MYF(0));
    share->tgt_wrappers[0] = NULL;
  }
  if (share->tgt_ssl_cas && share->tgt_ssl_cas[0])
  {
    spider_free(spider_current_trx, share->tgt_ssl_cas[0], MYF(0));
    share->tgt_ssl_cas[0] = NULL;
  }
  if (share->tgt_ssl_capaths && share->tgt_ssl_capaths[0])
  {
    spider_free(spider_current_trx, share->tgt_ssl_capaths[0], MYF(0));
    share->tgt_ssl_capaths[0] = NULL;
  }
  if (share->tgt_ssl_certs && share->tgt_ssl_certs[0])
  {
    spider_free(spider_current_trx, share->tgt_ssl_certs[0], MYF(0));
    share->tgt_ssl_certs[0] = NULL;
  }
  if (share->tgt_ssl_ciphers && share->tgt_ssl_ciphers[0])
  {
    spider_free(spider_current_trx, share->tgt_ssl_ciphers[0], MYF(0));
    share->tgt_ssl_ciphers[0] = NULL;
  }
  if (share->tgt_ssl_keys && share->tgt_ssl_keys[0])
  {
    spider_free(spider_current_trx, share->tgt_ssl_keys[0], MYF(0));
    share->tgt_ssl_keys[0] = NULL;
  }
  if (share->tgt_default_files && share->tgt_default_files[0])
  {
    spider_free(spider_current_trx, share->tgt_default_files[0], MYF(0));
    share->tgt_default_files[0] = NULL;
  }
  if (share->tgt_default_groups && share->tgt_default_groups[0])
  {
    spider_free(spider_current_trx, share->tgt_default_groups[0], MYF(0));
    share->tgt_default_groups[0] = NULL;
  }
  if (share->tgt_dsns && share->tgt_dsns[0])
  {
    spider_free(spider_current_trx, share->tgt_dsns[0], MYF(0));
    share->tgt_dsns[0] = NULL;
  }
  if (share->tgt_pk_names && share->tgt_pk_names[0])
  {
    spider_free(spider_current_trx, share->tgt_pk_names[0], MYF(0));
    share->tgt_pk_names[0] = NULL;
  }
  if (share->tgt_sequence_names && share->tgt_sequence_names[0])
  {
    spider_free(spider_current_trx, share->tgt_sequence_names[0], MYF(0));
    share->tgt_sequence_names[0] = NULL;
  }
  if (share->static_link_ids && share->static_link_ids[0])
  {
    spider_free(spider_current_trx, share->static_link_ids[0], MYF(0));
    share->static_link_ids[0] = NULL;
  }
  if (share->bka_engine)
  {
    spider_free(spider_current_trx, share->bka_engine, MYF(0));
    share->bka_engine = NULL;
  }
  if (share->conn_keys)
  {
    spider_free(spider_current_trx, share->conn_keys, MYF(0));
    share->conn_keys = NULL;
  }
  if (share->static_key_cardinality)
    spider_free(spider_current_trx, share->static_key_cardinality, MYF(0));
  if (share->key_hint)
  {
    delete [] share->key_hint;
    share->key_hint = NULL;
  }
  DBUG_VOID_RETURN;
}

int spider_create_string_list(
  char ***string_list,
  uint **string_length_list,
  uint *list_length,
  char *str,
  uint length
) {
  int roop_count;
  char *tmp_ptr, *tmp_ptr2, *tmp_ptr3, *tmp_ptr4, *esc_ptr;
  bool find_flg = FALSE;
  DBUG_ENTER("spider_create_string_list");

  *list_length = 0;
  if (!str)
  {
    *string_list = NULL;
    DBUG_RETURN(0);
  }

  tmp_ptr = str;
  while (*tmp_ptr == ' ')
    tmp_ptr++;
  *list_length= 1;

  bool last_esc_flg = FALSE;
  while (TRUE)
  {
    if ((tmp_ptr2 = strchr(tmp_ptr, ' ')))
    {
      find_flg = FALSE;
      last_esc_flg = FALSE;
      esc_ptr = tmp_ptr;
      while (!find_flg)
      {
        esc_ptr = strchr(esc_ptr, '\\');
        if (!esc_ptr || esc_ptr > tmp_ptr2)
        {
          find_flg = TRUE;
        }
        else if (esc_ptr == tmp_ptr2 - 1)
        {
          last_esc_flg = TRUE;
          tmp_ptr = tmp_ptr2 + 1;
          break;
        } else {
          last_esc_flg = TRUE;
          esc_ptr += 2;
        }
      }
      if (find_flg)
      {
        (*list_length)++;
        tmp_ptr = tmp_ptr2 + 1;
        while (*tmp_ptr == ' ')
          tmp_ptr++;
      }
    } else
      break;
  }

  if (!(*string_list = (char**)
    spider_bulk_malloc(spider_current_trx, SPD_MID_CREATE_STRING_LIST_1, MYF(MY_WME | MY_ZEROFILL),
      string_list, (uint) (sizeof(char*) * (*list_length)),
      string_length_list, (uint) (sizeof(int) * (*list_length)),
      NullS))
  ) {
    my_error(ER_OUT_OF_RESOURCES, MYF(0), HA_ERR_OUT_OF_MEM);
    DBUG_RETURN(HA_ERR_OUT_OF_MEM);
  }

  tmp_ptr = str;
  while (*tmp_ptr == ' ')
  {
    *tmp_ptr = '\0';
    tmp_ptr++;
  }
  tmp_ptr3 = tmp_ptr;

  for (roop_count = 0; roop_count < (int) *list_length - 1; roop_count++)
  {
    bool esc_flg = FALSE;
    find_flg = FALSE;
    while (TRUE)
    {
      tmp_ptr2 = strchr(tmp_ptr, ' ');

      esc_ptr = tmp_ptr;
      while (!find_flg)
      {
        esc_ptr = strchr(esc_ptr, '\\');
        if (!esc_ptr || esc_ptr > tmp_ptr2)
        {
          find_flg = TRUE;
        }
        else if (esc_ptr == tmp_ptr2 - 1)
        {
          esc_flg = TRUE;
          tmp_ptr = tmp_ptr2 + 1;
          break;
        } else {
          esc_flg = TRUE;
          esc_ptr += 2;
        }
      }
      if (find_flg)
        break;
    }
    tmp_ptr = tmp_ptr2;

    while (*tmp_ptr == ' ')
    {
      *tmp_ptr = '\0';
      tmp_ptr++;
    }

    (*string_length_list)[roop_count] = strlen(tmp_ptr3);
    if (!((*string_list)[roop_count] = spider_create_string(
      tmp_ptr3, (*string_length_list)[roop_count]))
    ) {
      my_error(ER_OUT_OF_RESOURCES, MYF(0), HA_ERR_OUT_OF_MEM);
      DBUG_RETURN(HA_ERR_OUT_OF_MEM);
    }

    if (esc_flg)
    {
      esc_ptr = (*string_list)[roop_count];
      while (TRUE)
      {
        esc_ptr = strchr(esc_ptr, '\\');
        if (!esc_ptr)
          break;
        switch(*(esc_ptr + 1))
        {
          case 'b':
            *esc_ptr = '\b';
            break;
          case 'n':
            *esc_ptr = '\n';
            break;
          case 'r':
            *esc_ptr = '\r';
            break;
          case 't':
            *esc_ptr = '\t';
            break;
          default:
            *esc_ptr = *(esc_ptr + 1);
            break;
        }
        esc_ptr++;
        tmp_ptr4 = esc_ptr;
        do
        {
          *tmp_ptr4 = *(tmp_ptr4 + 1);
          tmp_ptr4++;
        } while (*tmp_ptr4);
        (*string_length_list)[roop_count] -= 1;
      }
    }
    DBUG_PRINT("info",("spider string_list[%d]=%s", roop_count,
      (*string_list)[roop_count]));
    tmp_ptr3 = tmp_ptr;
  }
  (*string_length_list)[roop_count] = strlen(tmp_ptr3);
  if (!((*string_list)[roop_count] = spider_create_string(
    tmp_ptr3, (*string_length_list)[roop_count]))
  ) {
    my_error(ER_OUT_OF_RESOURCES, MYF(0), HA_ERR_OUT_OF_MEM);
    DBUG_RETURN(HA_ERR_OUT_OF_MEM);
  }
  if (last_esc_flg)
  {
    esc_ptr = (*string_list)[roop_count];
    while (TRUE)
    {
      esc_ptr = strchr(esc_ptr, '\\');
      if (!esc_ptr)
        break;
      switch(*(esc_ptr + 1))
      {
        case 'b':
          *esc_ptr = '\b';
          break;
        case 'n':
          *esc_ptr = '\n';
          break;
        case 'r':
          *esc_ptr = '\r';
          break;
        case 't':
          *esc_ptr = '\t';
          break;
        default:
          *esc_ptr = *(esc_ptr + 1);
          break;
      }
      esc_ptr++;
      tmp_ptr4 = esc_ptr;
      do
      {
        *tmp_ptr4 = *(tmp_ptr4 + 1);
        tmp_ptr4++;
      } while (*tmp_ptr4);
      (*string_length_list)[roop_count] -= 1;
    }
  }

  DBUG_PRINT("info",("spider string_list[%d]=%s", roop_count,
    (*string_list)[roop_count]));

  DBUG_RETURN(0);
}

int spider_create_long_list(
  long **long_list,
  uint *list_length,
  char *str,
  uint length,
  long min_val,
  long max_val
) {
  int roop_count;
  char *tmp_ptr;
  DBUG_ENTER("spider_create_long_list");

  *list_length = 0;
  if (!str)
  {
    *long_list = NULL;
    DBUG_RETURN(0);
  }

  tmp_ptr = str;
  while (*tmp_ptr == ' ')
    tmp_ptr++;
  if (*tmp_ptr)
    *list_length = 1;
  else {
    *long_list = NULL;
    DBUG_RETURN(0);
  }

  while (TRUE)
  {
    if ((tmp_ptr = strchr(tmp_ptr, ' ')))
    {
      (*list_length)++;
      tmp_ptr = tmp_ptr + 1;
      while (*tmp_ptr == ' ')
        tmp_ptr++;
    } else
      break;
  }

  if (!(*long_list = (long*)
    spider_bulk_malloc(spider_current_trx, SPD_MID_CREATE_LONG_LIST_1, MYF(MY_WME | MY_ZEROFILL),
      long_list, (uint) (sizeof(long) * (*list_length)),
      NullS))
  ) {
    my_error(ER_OUT_OF_RESOURCES, MYF(0), HA_ERR_OUT_OF_MEM);
    DBUG_RETURN(HA_ERR_OUT_OF_MEM);
  }

  tmp_ptr = str;
  for (roop_count = 0; roop_count < (int) *list_length; roop_count++)
  {
    if (roop_count != 0)
      tmp_ptr = strchr(tmp_ptr, ' ');

    while (*tmp_ptr == ' ')
    {
      *tmp_ptr = '\0';
      tmp_ptr++;
    }
    (*long_list)[roop_count] = atol(tmp_ptr);
    if ((*long_list)[roop_count] < min_val)
      (*long_list)[roop_count] = min_val;
    else if ((*long_list)[roop_count] > max_val)
      (*long_list)[roop_count] = max_val;
  }

#ifndef DBUG_OFF
  for (roop_count = 0; roop_count < (int) *list_length; roop_count++)
  {
    DBUG_PRINT("info",("spider long_list[%d]=%ld", roop_count,
      (*long_list)[roop_count]));
  }
#endif

  DBUG_RETURN(0);
}

int spider_create_longlong_list(
  longlong **longlong_list,
  uint *list_length,
  char *str,
  uint length,
  longlong min_val,
  longlong max_val
) {
  int error_num, roop_count;
  char *tmp_ptr;
  DBUG_ENTER("spider_create_longlong_list");

  *list_length = 0;
  if (!str)
  {
    *longlong_list = NULL;
    DBUG_RETURN(0);
  }

  tmp_ptr = str;
  while (*tmp_ptr == ' ')
    tmp_ptr++;
  if (*tmp_ptr)
    *list_length = 1;
  else {
    *longlong_list = NULL;
    DBUG_RETURN(0);
  }

  while (TRUE)
  {
    if ((tmp_ptr = strchr(tmp_ptr, ' ')))
    {
      (*list_length)++;
      tmp_ptr = tmp_ptr + 1;
      while (*tmp_ptr == ' ')
        tmp_ptr++;
    } else
      break;
  }

  if (!(*longlong_list = (longlong *)
    spider_bulk_malloc(spider_current_trx, SPD_MID_CREATE_LONGLONG_LIST_1, MYF(MY_WME | MY_ZEROFILL),
      longlong_list, (uint) (sizeof(longlong) * (*list_length)),
      NullS))
  ) {
    my_error(ER_OUT_OF_RESOURCES, MYF(0), HA_ERR_OUT_OF_MEM);
    DBUG_RETURN(HA_ERR_OUT_OF_MEM);
  }

  tmp_ptr = str;
  for (roop_count = 0; roop_count < (int) *list_length; roop_count++)
  {
    if (roop_count != 0)
      tmp_ptr = strchr(tmp_ptr, ' ');

    while (*tmp_ptr == ' ')
    {
      *tmp_ptr = '\0';
      tmp_ptr++;
    }
    (*longlong_list)[roop_count] = my_strtoll10(tmp_ptr, (char**) NULL,
      &error_num);
    if ((*longlong_list)[roop_count] < min_val)
      (*longlong_list)[roop_count] = min_val;
    else if ((*longlong_list)[roop_count] > max_val)
      (*longlong_list)[roop_count] = max_val;
  }

#ifndef DBUG_OFF
  for (roop_count = 0; roop_count < (int) *list_length; roop_count++)
  {
    DBUG_PRINT("info",("spider longlong_list[%d]=%lld", roop_count,
      (*longlong_list)[roop_count]));
  }
#endif

  DBUG_RETURN(0);
}

int spider_increase_string_list(
  char ***string_list,
  uint **string_length_list,
  uint *list_length,
  uint *list_charlen,
  uint link_count
) {
  int roop_count;
  char **tmp_str_list, *tmp_str;
  uint *tmp_length_list, tmp_length;
  DBUG_ENTER("spider_increase_string_list");
  if (*list_length == link_count)
    DBUG_RETURN(0);
  if (*list_length > 1)
  {
    my_printf_error(ER_SPIDER_DIFFERENT_LINK_COUNT_NUM,
      ER_SPIDER_DIFFERENT_LINK_COUNT_STR, MYF(0));
    DBUG_RETURN(ER_SPIDER_DIFFERENT_LINK_COUNT_NUM);
  }

  if (*string_list)
  {
    tmp_str = (*string_list)[0];
    tmp_length = (*string_length_list)[0];
  } else {
    tmp_str = NULL;
    tmp_length = 0;
  }

  if (!(tmp_str_list = (char**)
    spider_bulk_malloc(spider_current_trx, SPD_MID_INCREASE_STRING_LIST_1, MYF(MY_WME | MY_ZEROFILL),
      &tmp_str_list, (uint) (sizeof(char*) * link_count),
      &tmp_length_list, (uint) (sizeof(uint) * link_count),
      NullS))
  ) {
    my_error(ER_OUT_OF_RESOURCES, MYF(0), HA_ERR_OUT_OF_MEM);
    DBUG_RETURN(HA_ERR_OUT_OF_MEM);
  }

  for (roop_count = 0; roop_count < (int) link_count; roop_count++)
  {
    tmp_length_list[roop_count] = tmp_length;
    if (tmp_str)
    {
      if (!(tmp_str_list[roop_count] = spider_create_string(
        tmp_str, tmp_length))
      )
        goto error;
      DBUG_PRINT("info",("spider string_list[%d]=%s", roop_count,
        tmp_str_list[roop_count]));
    } else
      tmp_str_list[roop_count] = NULL;
  }
  if (*string_list)
  {
    if ((*string_list)[0])
      spider_free(spider_current_trx, (*string_list)[0], MYF(0));
    spider_free(spider_current_trx, *string_list, MYF(0));
  }
  *list_charlen = (tmp_length + 1) * link_count - 1;
  *list_length = link_count;
  *string_list = tmp_str_list;
  *string_length_list = tmp_length_list;

  DBUG_RETURN(0);

error:
  for (roop_count = 0; roop_count < (int) link_count; roop_count++)
  {
    if (tmp_str_list[roop_count])
      spider_free(spider_current_trx, tmp_str_list[roop_count], MYF(0));
  }
  if (tmp_str_list)
    spider_free(spider_current_trx, tmp_str_list, MYF(0));
  my_error(ER_OUT_OF_RESOURCES, MYF(0), HA_ERR_OUT_OF_MEM);
  DBUG_RETURN(HA_ERR_OUT_OF_MEM);
}

int spider_increase_null_string_list(
  char ***string_list,
  uint **string_length_list,
  uint *list_length,
  uint *list_charlen,
  uint link_count
) {
  int roop_count;
  char **tmp_str_list;
  uint *tmp_length_list;
  DBUG_ENTER("spider_increase_null_string_list");
  if (*list_length == link_count)
    DBUG_RETURN(0);

  if (!(tmp_str_list = (char**)
    spider_bulk_malloc(spider_current_trx, SPD_MID_INCREASE_NULL_STRING_LIST_1, MYF(MY_WME | MY_ZEROFILL),
      &tmp_str_list, (uint) (sizeof(char*) * link_count),
      &tmp_length_list, (uint) (sizeof(uint) * link_count),
      NullS))
  ) {
    my_error(ER_OUT_OF_RESOURCES, MYF(0), HA_ERR_OUT_OF_MEM);
    DBUG_RETURN(HA_ERR_OUT_OF_MEM);
  }

  for (roop_count = 0; roop_count < (int) *list_length; roop_count++)
  {
    tmp_str_list[roop_count] = (*string_list)[roop_count];
    tmp_length_list[roop_count] = (*string_length_list)[roop_count];
  }
  if (*string_list)
  {
    spider_free(spider_current_trx, *string_list, MYF(0));
  }
  *list_length = link_count;
  *string_list = tmp_str_list;
  *string_length_list = tmp_length_list;
#ifndef DBUG_OFF
  DBUG_PRINT("info",("spider list_length=%u", *list_length));
  for (roop_count = 0; roop_count < (int) *list_length; roop_count++)
  {
    DBUG_PRINT("info",("spider string_list[%d]=%s", roop_count,
      (*string_list)[roop_count] ? (*string_list)[roop_count] : "NULL"));
    DBUG_PRINT("info",("spider string_length_list[%d]=%u", roop_count,
      (*string_length_list)[roop_count]));
  }
#endif

  DBUG_RETURN(0);
}

int spider_increase_long_list(
  long **long_list,
  uint *list_length,
  uint link_count
) {
  int roop_count;
  long *tmp_long_list, tmp_long;
  DBUG_ENTER("spider_increase_long_list");
  if (*list_length == link_count)
    DBUG_RETURN(0);
  if (*list_length > 1)
  {
    my_printf_error(ER_SPIDER_DIFFERENT_LINK_COUNT_NUM,
      ER_SPIDER_DIFFERENT_LINK_COUNT_STR, MYF(0));
    DBUG_RETURN(ER_SPIDER_DIFFERENT_LINK_COUNT_NUM);
  }

  if (*long_list)
    tmp_long = (*long_list)[0];
  else
    tmp_long = -1;

  if (!(tmp_long_list = (long*)
    spider_bulk_malloc(spider_current_trx, SPD_MID_INCREASE_LONG_LIST_1, MYF(MY_WME | MY_ZEROFILL),
      &tmp_long_list, (uint) (sizeof(long) * link_count),
      NullS))
  ) {
    my_error(ER_OUT_OF_RESOURCES, MYF(0), HA_ERR_OUT_OF_MEM);
    DBUG_RETURN(HA_ERR_OUT_OF_MEM);
  }

  for (roop_count = 0; roop_count < (int) link_count; roop_count++)
  {
    tmp_long_list[roop_count] = tmp_long;
    DBUG_PRINT("info",("spider long_list[%d]=%ld", roop_count,
      tmp_long));
  }
  if (*long_list)
    spider_free(spider_current_trx, *long_list, MYF(0));
  *list_length = link_count;
  *long_list = tmp_long_list;

  DBUG_RETURN(0);
}

int spider_increase_longlong_list(
  longlong **longlong_list,
  uint *list_length,
  uint link_count
) {
  int roop_count;
  longlong *tmp_longlong_list, tmp_longlong;
  DBUG_ENTER("spider_increase_longlong_list");
  if (*list_length == link_count)
    DBUG_RETURN(0);
  if (*list_length > 1)
  {
    my_printf_error(ER_SPIDER_DIFFERENT_LINK_COUNT_NUM,
      ER_SPIDER_DIFFERENT_LINK_COUNT_STR, MYF(0));
    DBUG_RETURN(ER_SPIDER_DIFFERENT_LINK_COUNT_NUM);
  }

  if (*longlong_list)
    tmp_longlong = (*longlong_list)[0];
  else
    tmp_longlong = -1;

  if (!(tmp_longlong_list = (longlong*)
    spider_bulk_malloc(spider_current_trx, SPD_MID_INCREASE_LONGLONG_LIST_1, MYF(MY_WME | MY_ZEROFILL),
      &tmp_longlong_list, (uint) (sizeof(longlong) * link_count),
      NullS))
  ) {
    my_error(ER_OUT_OF_RESOURCES, MYF(0), HA_ERR_OUT_OF_MEM);
    DBUG_RETURN(HA_ERR_OUT_OF_MEM);
  }

  for (roop_count = 0; roop_count < (int) link_count; roop_count++)
  {
    tmp_longlong_list[roop_count] = tmp_longlong;
    DBUG_PRINT("info",("spider longlong_list[%d]=%lld", roop_count,
      tmp_longlong));
  }
  if (*longlong_list)
    spider_free(spider_current_trx, *longlong_list, MYF(0));
  *list_length = link_count;
  *longlong_list = tmp_longlong_list;

  DBUG_RETURN(0);
}

static int spider_set_ll_value(
  longlong *value,
  char *str
) {
  int error_num = 0;
  DBUG_ENTER("spider_set_ll_value");
  *value = my_strtoll10(str, (char**) NULL, &error_num);
  DBUG_RETURN(error_num);
}

#define SPIDER_PARAM_LEN(name) name ## _length
#define SPIDER_PARAM_LENS(name) name ## _lengths
#define SPIDER_PARAM_CHARLEN(name) name ## _charlen
#define SPIDER_PARAM_STR(title_name, param_name)                        \
  if (!strncasecmp(parse.start_title, title_name, title_length))        \
  {                                                                     \
    DBUG_PRINT("info",("spider " title_name " start"));                 \
    if (!share->param_name)                                             \
    {                                                                   \
      if ((share->param_name = spider_create_string(parse.start_value,  \
                                                    value_length)))     \
        share->SPIDER_PARAM_LEN(param_name) = strlen(share->param_name); \
      else {                                                            \
        error_num= parse.fail(true);                                    \
        goto error;                                                     \
      }                                                                 \
      DBUG_PRINT("info",("spider " title_name "=%s", share->param_name)); \
    } \
    break; \
  }
#define SPIDER_PARAM_STR_LIST(title_name, param_name)                   \
  if (!strncasecmp(parse.start_title, title_name, title_length))        \
  {                                                                     \
    DBUG_PRINT("info", ("spider " title_name " start"));                \
    if (!share->param_name)                                             \
    {                                                                   \
      share->SPIDER_PARAM_CHARLEN(param_name)= value_length;            \
      if ((error_num= spider_create_string_list(                        \
             &share->param_name,                                        \
             &share->SPIDER_PARAM_LENS(param_name),                     \
             &share->SPIDER_PARAM_LEN(param_name),                      \
             parse.start_value,                                         \
             share->SPIDER_PARAM_CHARLEN(param_name))))                 \
        goto error;                                                     \
    }                                                                   \
    break;                                                              \
  }
#define SPIDER_PARAM_HINT(title_name, param_name, check_length, max_size, append_method) \
  if (!strncasecmp(parse.start_title, title_name, check_length)) \
  { \
    DBUG_PRINT("info",("spider " title_name " start")); \
    DBUG_PRINT("info",("spider max_size=%d", max_size)); \
    int hint_num = atoi(parse.start_title + check_length); \
    DBUG_PRINT("info",("spider hint_num=%d", hint_num)); \
    DBUG_PRINT("info",("spider share->param_name=%p", \
                       share->param_name)); \
    if (share->param_name) \
    { \
      if (hint_num < 0 || hint_num >= max_size) \
      { \
        error_num= parse.fail(true); \
        goto error; \
      } else if (share->param_name[hint_num].length() > 0) \
        break; \
      if ((error_num= append_method(&share->param_name[hint_num], \
                                    parse.start_value))) \
        goto error; \
      DBUG_PRINT("info",("spider " title_name "[%d]=%s", hint_num, \
                         share->param_name[hint_num].ptr())); \
    } else { \
      error_num= parse.fail(true); \
      goto error; \
    } \
    break; \
  }
#define SPIDER_PARAM_NUMHINT(title_name, param_name, check_length, max_size, append_method) \
  if (!strncasecmp(parse.start_title, title_name, check_length)) \
  { \
    DBUG_PRINT("info",("spider " title_name " start")); \
    DBUG_PRINT("info",("spider max_size=%d", max_size)); \
    int hint_num = atoi(parse.start_title + check_length); \
    DBUG_PRINT("info",("spider hint_num=%d", hint_num)); \
    DBUG_PRINT("info",("spider share->param_name=%p", share->param_name)); \
    if (share->param_name) \
    { \
      if (hint_num < 0 || hint_num >= max_size) \
      { \
        error_num= parse.fail(true); \
        goto error; \
      } else if (share->param_name[hint_num] != -1) \
        break; \
      if ((error_num = \
           append_method(&share->param_name[hint_num], parse.start_value))) \
        goto error; \
      DBUG_PRINT("info",("spider " title_name "[%d]=%lld", hint_num, \
                         share->param_name[hint_num])); \
    } else { \
      error_num= parse.fail(true); \
      goto error; \
    } \
    break; \
  }
#define SPIDER_PARAM_LONG_LIST_WITH_MAX(title_name, param_name,   \
                                        min_val, max_val)         \
  if (!strncasecmp(parse.start_title, title_name, title_length))  \
  {                                                               \
    DBUG_PRINT("info",("spider " title_name " start"));           \
    if (!share->param_name)                                       \
    {                                                             \
      if ((error_num = spider_create_long_list(                   \
             &share->param_name,                                  \
             &share->SPIDER_PARAM_LEN(param_name),                \
             parse.start_value,                                   \
             value_length,                                        \
             min_val, max_val)))                                  \
        goto error;                                               \
    }                                                             \
    break;                                                        \
  }
#define SPIDER_PARAM_LONGLONG_LIST_WITH_MAX(title_name, param_name, \
                                            min_val, max_val)       \
  if (!strncasecmp(parse.start_title, title_name, title_length))    \
  {                                                                 \
    DBUG_PRINT("info",("spider " title_name " start"));             \
    if (!share->param_name)                                         \
    {                                                               \
      if ((error_num = spider_create_longlong_list(                 \
             &share->param_name,                                    \
             &share->SPIDER_PARAM_LEN(param_name),                  \
             parse.start_value,                                     \
             value_length,                                          \
             min_val, max_val)))                                    \
        goto error;                                                 \
    }                                                               \
    break;                                                          \
  }
#define SPIDER_PARAM_INT_WITH_MAX(title_name, param_name, min_val, max_val) \
  if (!strncasecmp(parse.start_title, title_name, title_length)) \
  { \
    DBUG_PRINT("info",("spider " title_name " start")); \
    if (share->param_name == -1) \
    { \
      share->param_name = atoi(parse.start_value); \
      if (share->param_name < min_val) \
        share->param_name = min_val; \
      else if (share->param_name > max_val) \
        share->param_name = max_val; \
      DBUG_PRINT("info",("spider " title_name "=%d", share->param_name)); \
    } \
    break; \
  }
#define SPIDER_PARAM_INT(title_name, param_name, min_val) \
  if (!strncasecmp(parse.start_title, title_name, title_length)) \
  { \
    DBUG_PRINT("info",("spider " title_name " start")); \
    if (share->param_name == -1) \
    { \
      share->param_name = atoi(parse.start_value); \
      if (share->param_name < min_val) \
        share->param_name = min_val; \
      DBUG_PRINT("info",("spider " title_name "=%d", share->param_name)); \
    } \
    break; \
  }
#define SPIDER_PARAM_DOUBLE(title_name, param_name, min_val) \
  if (!strncasecmp(parse.start_title, title_name, title_length)) \
  { \
    DBUG_PRINT("info",("spider " title_name " start")); \
    if (share->param_name == -1) \
    { \
      share->param_name = my_atof(parse.start_value); \
      if (share->param_name < min_val) \
        share->param_name = min_val; \
      DBUG_PRINT("info",("spider " title_name "=%f", share->param_name)); \
    } \
    break; \
  }
#define SPIDER_PARAM_LONGLONG(title_name, param_name, min_val) \
  if (!strncasecmp(parse.start_title, title_name, title_length)) \
  { \
    DBUG_PRINT("info",("spider " title_name " start")); \
    if (share->param_name == -1) \
    { \
      share->param_name = my_strtoll10(parse.start_value, (char**) NULL, \
                                       &error_num); \
      if (share->param_name < min_val) \
        share->param_name = min_val; \
      DBUG_PRINT("info",("spider " title_name "=%lld", share->param_name)); \
    } \
    break; \
  }

/**
  Assign -1 to some `SPIDER_SHARE' numeric fields, to indicate they
  have not been specified by the user yet.
*/
static void spider_minus_1(SPIDER_SHARE *share, TABLE_SHARE *table_share)
{
#ifndef WITHOUT_SPIDER_BG_SEARCH
  share->sts_bg_mode = -1;
#endif
  share->sts_interval = -1;
  share->sts_mode = -1;
#ifdef WITH_PARTITION_STORAGE_ENGINE
  share->sts_sync = -1;
#endif
  share->store_last_sts = -1;
  share->load_sts_at_startup = -1;
#ifndef WITHOUT_SPIDER_BG_SEARCH
  share->crd_bg_mode = -1;
#endif
  share->crd_interval = -1;
  share->crd_mode = -1;
#ifdef WITH_PARTITION_STORAGE_ENGINE
  share->crd_sync = -1;
#endif
  share->store_last_crd = -1;
  share->load_crd_at_startup = -1;
  share->crd_type = -1;
  share->crd_weight = -1;
  share->internal_offset = -1;
  share->internal_limit = -1;
  share->split_read = -1;
  share->semi_split_read = -1;
  share->semi_split_read_limit = -1;
  share->init_sql_alloc_size = -1;
  share->reset_sql_alloc = -1;
  share->multi_split_read = -1;
  share->max_order = -1;
  share->semi_table_lock = -1;
  share->semi_table_lock_conn = -1;
  share->selupd_lock_mode = -1;
  share->query_cache = -1;
  share->query_cache_sync = -1;
  share->bulk_size = -1;
  share->bulk_update_mode = -1;
  share->bulk_update_size = -1;
  share->buffer_size = -1;
  share->internal_optimize = -1;
  share->internal_optimize_local = -1;
  share->scan_rate = -1;
  share->read_rate = -1;
  share->priority = -1;
  share->quick_mode = -1;
  share->quick_page_size = -1;
  share->quick_page_byte = -1;
  share->low_mem_read = -1;
  share->table_count_mode = -1;
  share->select_column_mode = -1;
#ifndef WITHOUT_SPIDER_BG_SEARCH
  share->bgs_mode = -1;
  share->bgs_first_read = -1;
  share->bgs_second_read = -1;
#endif
  share->first_read = -1;
  share->second_read = -1;
  share->auto_increment_mode = -1;
  share->use_table_charset = -1;
  share->use_pushdown_udf = -1;
  share->skip_default_condition = -1;
  share->skip_parallel_search = -1;
  share->direct_dup_insert = -1;
  share->direct_order_limit = -1;
  share->bka_mode = -1;
  share->read_only_mode = -1;
  share->error_read_mode = -1;
  share->error_write_mode = -1;
  share->active_link_count = -1;
#ifdef HA_CAN_BULK_ACCESS
  share->bulk_access_free = -1;
#endif
#ifdef HA_CAN_FORCE_BULK_UPDATE
  share->force_bulk_update = -1;
#endif
#ifdef HA_CAN_FORCE_BULK_DELETE
  share->force_bulk_delete = -1;
#endif
  share->casual_read = -1;
  share->delete_all_rows_type = -1;
  share->static_records_for_status = -1;
  share->static_mean_rec_length = -1;
  for (uint i = 0; i < table_share->keys; i++)
  {
    share->static_key_cardinality[i] = -1;
  }
}

/**
  Get the connect info of a certain type.

  @param  type              The type of the connect info.
                            4: partition; 3: subpartition; 2: comment;
                            1: connect_string
  @retval 0                 Success
  @retval 1                 Not applicable. That is, the info with the
                            type is missing
  @retval HA_ERR_OUT_OF_MEM Failure
*/
static int spider_get_connect_info(const int type,
                                   const partition_element *part_elem,
                                   const partition_element *sub_elem,
                                   const TABLE_SHARE* table_share,
                                   char*& out)
{
  switch (type)
  {
#ifdef WITH_PARTITION_STORAGE_ENGINE
  case 4:
    if (!sub_elem || !sub_elem->part_comment)
      return 1;
    if (!(out = spider_create_string(
            sub_elem->part_comment, strlen(sub_elem->part_comment))))
      return HA_ERR_OUT_OF_MEM;
    break;
  case 3:
    if (!part_elem || !part_elem->part_comment)
      return 1;
    if (!(out = spider_create_string(
            part_elem->part_comment, strlen(part_elem->part_comment))))
      return HA_ERR_OUT_OF_MEM;
    break;
#endif
  case 2:
    if (table_share->comment.length == 0)
      return 1;
    if (!(out = spider_create_string(
            table_share->comment.str, table_share->comment.length)))
      return HA_ERR_OUT_OF_MEM;
    break;
  default:
    if (table_share->connect_string.length == 0)
      return 1;
    DBUG_PRINT("info",("spider create out string"));
    if (!(out = spider_create_string(
          table_share->connect_string.str, table_share->connect_string.length)))
      return HA_ERR_OUT_OF_MEM;
    break;
  }
  return 0;
}

/**
  Find the beginning and end of a parameter title

  Skip over whitespace to find the beginning of the parameter
  title. Then skip over non-whitespace/quote/nul chars to find the end
  of the parameter title

  @param  start_title  The start of the param definition. Will be
                       moved to the start of the param title
  @param  end_title    Will be moved to the end of the param title
  @retval false        Success
  @retval true         Failure
*/
static bool spider_parse_find_title(char*& start_title, char*& end_title)
{
  /* Skip leading whitespaces. */
  while (*start_title == ' ' || *start_title == '\r' ||
         *start_title == '\n' || *start_title == '\t')
    start_title++;

  if (*start_title == '\0')
    return true;

  end_title = start_title;
  /* Move over non-whitespace/comma/nul/quote chars (parameter title). */
  while (*end_title != ' ' && *end_title != '\r' &&
         *end_title != '\n' && *end_title != '\t' &&
         *end_title != '\0' && *end_title != ',' &&
         *end_title != '\'' && *end_title != '"')
    end_title++;

  /* Fail on invalid end: there should be at least one space between
  title and value, and the value should be non-empty. */
  if (*end_title == '\'' || *end_title == '"' ||
      *end_title == '\0' || *end_title == ',')
    return true;

  return false;
}

/**
  Find the beginning and the end of a paramter value, and the value
  delimiter

  Skip over whitespaces to find the start delimiter, then skip over
  the param value to find the end delimiter

  @param  start_value  The end of the param title. Will be moved to
                       the start of the param value, just after the
                       delimiter
  @param  end_value    Will be moved to the end of the param value, at
                       the delimiter
  @param  delim        Will be assigned the param value delimiter,
                       either the single or double quote
  @retval false        Success
  @retval true         Failure
*/
static bool spider_parse_find_value(char*& start_value, char*& end_value,
                                    char& delim)
{
  /* Skip over whitespaces */
  while (*start_value == ' ' || *start_value == '\r' ||
         *start_value == '\n' || *start_value == '\t')
    start_value++;
  if (*start_value != '"' && *start_value != '\'')
    return true;
  delim= *start_value;
  end_value= start_value++;

  while (1)
  {
    end_value++;
    /* Escaping */
    if (*end_value == '\\')
    {
      end_value++;
      /* The backslash cannot be at the end */
      if (*end_value == '\0')
        return true;
    }
    else if (*end_value == delim)
      return false;
    else if (*end_value == '\0')
      return true;
  }
}

/**
  Find the beginning of the next parameter

  Skip over whitespaces, then check that the first non-whitespace char
  is a comma or the end of string

  @param  start_param  The end of the param value. Will be moved to
                       the start of the next param definition, just
                       after the comma, if there's one; otherwise will
                       be moved to the end of the string
  @retval false        Success
  @retval true         Failure
*/
static bool spider_parse_find_next(char*& start_param)
{
  /* Skip over whitespaces */
  while (*start_param == ' ' || *start_param == '\r' ||
         *start_param == '\n' || *start_param == '\t')
    start_param++;
  /* No more param definitions */
  if (*start_param == '\0')
    return false;
  else if (*start_param == ',')
  {
    start_param++;
    return false;
  }
  else
    return true;
}

/**
  Find the start and end of the current param title and value and the
  value deliminator.

  @param  start_param    The beginning of the current param
                         definition. Will be mutated to the beginning
                         of the next param definition.
  @retval false  success
  @retval true   failure
*/
bool st_spider_param_string_parse::locate_param_def(char*& start_param)
{
  DBUG_ENTER("parse::locate_param_def");
  start_title= start_param;
  if (spider_parse_find_title(start_title, end_title))
    DBUG_RETURN(TRUE);
  start_value= end_title;
  if (spider_parse_find_value(start_value, end_value, delim_value))
    DBUG_RETURN(TRUE);
  /* skip the delim */
  start_param= end_value + 1;
  if (spider_parse_find_next(start_param))
    DBUG_RETURN(TRUE);
  DBUG_RETURN(FALSE);
}

/**
  Handle parsing failure.

  Print error and optionally restore param value end delimiter that
  has been nulled before.

  @param  restore_delim  If true, restore the end value delimiter
  @return                The error number
*/
int st_spider_param_string_parse::fail(bool restore_delim)
{
  DBUG_ENTER("spider_parse_print_param_error");
  DBUG_ASSERT(error_num != 0);
  /* Print the error message */
  switch (error_num)
  {
  case ER_SPIDER_INVALID_UDF_PARAM_NUM:
    my_printf_error(error_num, ER_SPIDER_INVALID_UDF_PARAM_STR,
                    MYF(0), start_title);
    break;
  case ER_SPIDER_INVALID_CONNECT_INFO_NUM:
  default:
    my_printf_error(error_num, ER_SPIDER_INVALID_CONNECT_INFO_STR,
                    MYF(0), start_title);
  }
  if (restore_delim)
    *end_value = delim_value;
  DBUG_RETURN(error_num);
}

/*
  Parse connection information specified by COMMENT, CONNECT, or engine-defined
  options.

  TODO: Deprecate the connection specification by COMMENT and CONNECT,
  and then solely utilize engine-defined options.
*/
int spider_parse_connect_info(
  SPIDER_SHARE *share,
  TABLE_SHARE *table_share,
  partition_info *part_info,
  uint create_table
) {
  int error_num = 0;
  char *connect_string = NULL;
  char *start_param;
  int title_length, value_length;
  SPIDER_PARAM_STRING_PARSE parse;
  SPIDER_ALTER_TABLE *share_alter;
  partition_element *part_elem;
  partition_element *sub_elem;
  DBUG_ENTER("spider_parse_connect_info");
  DBUG_PRINT("info",("spider partition_info=%s",
    table_share->partition_info_str));
  DBUG_PRINT("info",("spider part_info=%p", part_info));
  DBUG_PRINT("info",("spider s->db=%s", table_share->db.str));
  DBUG_PRINT("info",("spider s->table_name=%s", table_share->table_name.str));
  DBUG_PRINT("info",("spider s->path=%s", table_share->path.str));
  DBUG_PRINT("info",
    ("spider s->normalized_path=%s", table_share->normalized_path.str));
  spider_get_partition_info(share->table_name, share->table_name_length,
    table_share, part_info, &part_elem, &sub_elem);
  spider_minus_1(share, table_share);
#ifdef WITH_PARTITION_STORAGE_ENGINE
  for (int i = 4; i > 0; i--)
#else
  for (roop_count = 2; roop_count > 0; roop_count--)
#endif
  {
    if (connect_string)
    {
      spider_free(spider_current_trx, connect_string, MYF(0));
      connect_string = NULL;
    }

    /* Get the correct connect info for the current level. */
    int error_num_1 = spider_get_connect_info(i, part_elem, sub_elem,
                                              table_share, connect_string);
    if (error_num_1 == 1)
      continue;
    if (error_num_1 == HA_ERR_OUT_OF_MEM)
    {
      error_num= HA_ERR_OUT_OF_MEM;
      goto error_alloc_conn_string;
    }
    DBUG_ASSERT(error_num_1 == 0);

    start_param = connect_string;
    parse.error_num = ER_SPIDER_INVALID_CONNECT_INFO_NUM;
    while (*start_param != '\0')
    {
      if (parse.locate_param_def(start_param))
      {
        error_num= parse.fail(false);
        goto error;
      }
      /* Null the end of the parameter value. */
      *parse.end_value= '\0';
      value_length= (int) (parse.end_value - parse.start_value);
      switch (title_length = (int) (parse.end_title - parse.start_title))
      {
        case 0:
          error_num= parse.fail(true);
          goto error;
        case 3:
          SPIDER_PARAM_LONG_LIST_WITH_MAX("abl", access_balances, 0,
            2147483647);
          SPIDER_PARAM_INT_WITH_MAX("aim", auto_increment_mode, 0, 3);
          SPIDER_PARAM_INT("alc", active_link_count, 1);
#ifdef HA_CAN_BULK_ACCESS
          SPIDER_PARAM_INT_WITH_MAX("baf", bulk_access_free, 0, 1);
#endif
          SPIDER_PARAM_INT("bfz", buffer_size, 0);
#ifndef WITHOUT_SPIDER_BG_SEARCH
          SPIDER_PARAM_LONGLONG("bfr", bgs_first_read, 0);
          SPIDER_PARAM_INT("bmd", bgs_mode, 0);
          SPIDER_PARAM_LONGLONG("bsr", bgs_second_read, 0);
#endif
          SPIDER_PARAM_STR("bke", bka_engine);
          SPIDER_PARAM_INT_WITH_MAX("bkm", bka_mode, 0, 2);
          SPIDER_PARAM_INT("bsz", bulk_size, 0);
          SPIDER_PARAM_LONG_LIST_WITH_MAX("btt", bka_table_name_types,
            0, 1);
          SPIDER_PARAM_INT_WITH_MAX("bum", bulk_update_mode, 0, 2);
          SPIDER_PARAM_INT("bus", bulk_update_size, 0);
#ifndef WITHOUT_SPIDER_BG_SEARCH
          SPIDER_PARAM_INT_WITH_MAX("cbm", crd_bg_mode, 0, 2);
#endif
          SPIDER_PARAM_DOUBLE("civ", crd_interval, 0);
          SPIDER_PARAM_INT_WITH_MAX("cmd", crd_mode, 0, 3);
          SPIDER_PARAM_INT_WITH_MAX("csr", casual_read, 0, 63);
#ifdef WITH_PARTITION_STORAGE_ENGINE
          SPIDER_PARAM_INT_WITH_MAX("csy", crd_sync, 0, 2);
#endif
          SPIDER_PARAM_LONG_LIST_WITH_MAX("cto", connect_timeouts, 0,
            2147483647);
          SPIDER_PARAM_INT_WITH_MAX("ctp", crd_type, 0, 2);
          SPIDER_PARAM_DOUBLE("cwg", crd_weight, 1);
          SPIDER_PARAM_INT_WITH_MAX("dat", delete_all_rows_type, 0, 1);
          SPIDER_PARAM_INT_WITH_MAX("ddi", direct_dup_insert, 0, 1);
          SPIDER_PARAM_STR_LIST("dff", tgt_default_files);
          SPIDER_PARAM_STR_LIST("dfg", tgt_default_groups);
          SPIDER_PARAM_LONGLONG("dol", direct_order_limit, 0);
          SPIDER_PARAM_STR_LIST("dsn", tgt_dsns);
          SPIDER_PARAM_INT_WITH_MAX("erm", error_read_mode, 0, 1);
          SPIDER_PARAM_INT_WITH_MAX("ewm", error_write_mode, 0, 1);
#ifdef HA_CAN_FORCE_BULK_DELETE
          SPIDER_PARAM_INT_WITH_MAX("fbd", force_bulk_delete, 0, 1);
#endif
#ifdef HA_CAN_FORCE_BULK_UPDATE
          SPIDER_PARAM_INT_WITH_MAX("fbu", force_bulk_update, 0, 1);
#endif
          SPIDER_PARAM_LONGLONG("frd", first_read, 0);
          SPIDER_PARAM_INT("isa", init_sql_alloc_size, 0);
          SPIDER_PARAM_LONGLONG("ilm", internal_limit, 0);
          SPIDER_PARAM_LONGLONG("ios", internal_offset, 0);
          SPIDER_PARAM_INT_WITH_MAX("iom", internal_optimize, 0, 1);
          SPIDER_PARAM_INT_WITH_MAX("iol", internal_optimize_local, 0, 1);
          SPIDER_PARAM_INT_WITH_MAX("lmr", low_mem_read, 0, 1);
          SPIDER_PARAM_INT_WITH_MAX("lcs", load_crd_at_startup, 0, 1);
          SPIDER_PARAM_INT_WITH_MAX("lss", load_sts_at_startup, 0, 1);
          SPIDER_PARAM_LONG_LIST_WITH_MAX("lst", link_statuses, 0, 3);
#ifndef WITHOUT_SPIDER_BG_SEARCH
          SPIDER_PARAM_LONG_LIST_WITH_MAX("mbf", monitoring_bg_flag, 0, 1);
          SPIDER_PARAM_LONGLONG_LIST_WITH_MAX(
            "mbi", monitoring_bg_interval, 0, 4294967295LL);
          SPIDER_PARAM_LONG_LIST_WITH_MAX("mbk", monitoring_bg_kind, 0, 3);
#endif
          SPIDER_PARAM_LONG_LIST_WITH_MAX("mbp", monitoring_binlog_pos_at_failing, 0, 2);
          SPIDER_PARAM_LONG_LIST_WITH_MAX("mfg", monitoring_flag, 0, 1);
          SPIDER_PARAM_LONG_LIST_WITH_MAX("mkd", monitoring_kind, 0, 3);
          SPIDER_PARAM_LONGLONG_LIST_WITH_MAX(
            "mlt", monitoring_limit, 0, 9223372036854775807LL);
          SPIDER_PARAM_INT("mod", max_order, 0);
          SPIDER_PARAM_LONGLONG_LIST_WITH_MAX(
            "msi", monitoring_sid, 0, 4294967295LL);
          SPIDER_PARAM_INT_WITH_MAX("msr", multi_split_read, 0, 2147483647);
          SPIDER_PARAM_LONG_LIST_WITH_MAX("nrt", net_read_timeouts, 0,
            2147483647);
          SPIDER_PARAM_LONG_LIST_WITH_MAX("nwt", net_write_timeouts, 0,
            2147483647);
          SPIDER_PARAM_STR_LIST("pkn", tgt_pk_names);
          SPIDER_PARAM_LONGLONG("prt", priority, 0);
          SPIDER_PARAM_INT_WITH_MAX("qch", query_cache, 0, 2);
          SPIDER_PARAM_INT_WITH_MAX("qcs", query_cache_sync, 0, 3);
          SPIDER_PARAM_INT_WITH_MAX("qmd", quick_mode, 0, 3);
          SPIDER_PARAM_LONGLONG("qpb", quick_page_byte, 0);
          SPIDER_PARAM_LONGLONG("qps", quick_page_size, 0);
          SPIDER_PARAM_INT_WITH_MAX("rom", read_only_mode, 0, 1);
          SPIDER_PARAM_DOUBLE("rrt", read_rate, 0);
          SPIDER_PARAM_INT_WITH_MAX("rsa", reset_sql_alloc, 0, 1);
#ifndef WITHOUT_SPIDER_BG_SEARCH
          SPIDER_PARAM_INT_WITH_MAX("sbm", sts_bg_mode, 0, 2);
#endif
          SPIDER_PARAM_STR_LIST("sca", tgt_ssl_cas);
          SPIDER_PARAM_STR_LIST("sch", tgt_ssl_ciphers);
          SPIDER_PARAM_INT_WITH_MAX("scm", select_column_mode, 0, 1);
          SPIDER_PARAM_STR_LIST("scp", tgt_ssl_capaths);
          SPIDER_PARAM_STR_LIST("scr", tgt_ssl_certs);
          SPIDER_PARAM_INT_WITH_MAX("sdc", skip_default_condition, 0, 1);
          SPIDER_PARAM_LONG_LIST_WITH_MAX("sgb", strict_group_bys, 0, 1);
          SPIDER_PARAM_DOUBLE("siv", sts_interval, 0);
          SPIDER_PARAM_STR_LIST("sky", tgt_ssl_keys);
          SPIDER_PARAM_STR_LIST("sli", static_link_ids);
          SPIDER_PARAM_INT_WITH_MAX("slc", store_last_crd, 0, 1);
          SPIDER_PARAM_INT_WITH_MAX("slm", selupd_lock_mode, 0, 2);
          SPIDER_PARAM_INT_WITH_MAX("sls", store_last_sts, 0, 1);
          SPIDER_PARAM_INT_WITH_MAX("smd", sts_mode, 1, 2);
          SPIDER_PARAM_LONGLONG("smr", static_mean_rec_length, 0);
          SPIDER_PARAM_LONGLONG("spr", split_read, 0);
          SPIDER_PARAM_INT_WITH_MAX("sps", skip_parallel_search, 0, 3);
          SPIDER_PARAM_STR_LIST("sqn", tgt_sequence_names);
          SPIDER_PARAM_LONGLONG("srd", second_read, 0);
          SPIDER_PARAM_DOUBLE("srt", scan_rate, 0);
          SPIDER_PARAM_STR_LIST("srv", server_names);
          SPIDER_PARAM_DOUBLE("ssr", semi_split_read, 0);
          SPIDER_PARAM_LONGLONG("ssl", semi_split_read_limit, 0);
#ifdef WITH_PARTITION_STORAGE_ENGINE
          SPIDER_PARAM_INT_WITH_MAX("ssy", sts_sync, 0, 2);
#endif
          SPIDER_PARAM_INT_WITH_MAX("stc", semi_table_lock_conn, 0, 1);
          SPIDER_PARAM_INT_WITH_MAX("stl", semi_table_lock, 0, 1);
          SPIDER_PARAM_LONGLONG("srs", static_records_for_status, 0);
          SPIDER_PARAM_LONG_LIST_WITH_MAX("svc", tgt_ssl_vscs, 0, 1);
          SPIDER_PARAM_STR_LIST("tbl", tgt_table_names);
          SPIDER_PARAM_INT_WITH_MAX("tcm", table_count_mode, 0, 3);
          SPIDER_PARAM_LONG_LIST_WITH_MAX("uhd", use_handlers, 0, 3);
          SPIDER_PARAM_INT_WITH_MAX("upu", use_pushdown_udf, 0, 1);
          SPIDER_PARAM_INT_WITH_MAX("utc", use_table_charset, 0, 1);
          error_num = parse.fail(true);
          goto error;
        case 4:
          SPIDER_PARAM_STR_LIST("host", tgt_hosts);
          SPIDER_PARAM_STR_LIST("user", tgt_usernames);
          SPIDER_PARAM_LONG_LIST_WITH_MAX("port", tgt_ports, 0, 65535);
          error_num = parse.fail(true);
          goto error;
        case 5:
          SPIDER_PARAM_STR_LIST("table", tgt_table_names);
          error_num = parse.fail(true);
          goto error;
        case 6:
          SPIDER_PARAM_STR_LIST("server", server_names);
          SPIDER_PARAM_STR_LIST("socket", tgt_sockets);
          SPIDER_PARAM_HINT("idx", key_hint, 3, (int) table_share->keys,
            spider_db_append_key_hint);
          SPIDER_PARAM_STR_LIST("ssl_ca", tgt_ssl_cas);
          SPIDER_PARAM_NUMHINT("skc", static_key_cardinality, 3,
            (int) table_share->keys, spider_set_ll_value);
          error_num = parse.fail(true);
          goto error;
        case 7:
          SPIDER_PARAM_STR_LIST("wrapper", tgt_wrappers);
          SPIDER_PARAM_STR_LIST("ssl_key", tgt_ssl_keys);
          SPIDER_PARAM_STR_LIST("pk_name", tgt_pk_names);
          error_num = parse.fail(true);
          goto error;
        case 8:
          SPIDER_PARAM_STR_LIST("database", tgt_dbs);
          SPIDER_PARAM_STR_LIST("password", tgt_passwords);
          SPIDER_PARAM_INT_WITH_MAX("sts_mode", sts_mode, 1, 2);
#ifdef WITH_PARTITION_STORAGE_ENGINE
          SPIDER_PARAM_INT_WITH_MAX("sts_sync", sts_sync, 0, 2);
#endif
          SPIDER_PARAM_INT_WITH_MAX("crd_mode", crd_mode, 0, 3);
#ifdef WITH_PARTITION_STORAGE_ENGINE
          SPIDER_PARAM_INT_WITH_MAX("crd_sync", crd_sync, 0, 2);
#endif
          SPIDER_PARAM_INT_WITH_MAX("crd_type", crd_type, 0, 2);
          SPIDER_PARAM_LONGLONG("priority", priority, 0);
#ifndef WITHOUT_SPIDER_BG_SEARCH
          SPIDER_PARAM_INT("bgs_mode", bgs_mode, 0);
#endif
          SPIDER_PARAM_STR_LIST("ssl_cert", tgt_ssl_certs);
          SPIDER_PARAM_INT_WITH_MAX("bka_mode", bka_mode, 0, 2);
          error_num = parse.fail(true);
          goto error;
        case 9:
          SPIDER_PARAM_INT("max_order", max_order, 0);
          SPIDER_PARAM_INT("bulk_size", bulk_size, 0);
          SPIDER_PARAM_DOUBLE("scan_rate", scan_rate, 0);
          SPIDER_PARAM_DOUBLE("read_rate", read_rate, 0);
          error_num = parse.fail(true);
          goto error;
        case 10:
          SPIDER_PARAM_DOUBLE("crd_weight", crd_weight, 1);
          SPIDER_PARAM_LONGLONG("split_read", split_read, 0);
          SPIDER_PARAM_INT_WITH_MAX("quick_mode", quick_mode, 0, 3);
          SPIDER_PARAM_STR_LIST("ssl_cipher", tgt_ssl_ciphers);
          SPIDER_PARAM_STR_LIST("ssl_capath", tgt_ssl_capaths);
          SPIDER_PARAM_STR("bka_engine", bka_engine);
          SPIDER_PARAM_LONGLONG("first_read", first_read, 0);
          error_num = parse.fail(true);
          goto error;
        case 11:
          SPIDER_PARAM_INT_WITH_MAX("query_cache", query_cache, 0, 2);
#ifndef WITHOUT_SPIDER_BG_SEARCH
          SPIDER_PARAM_INT_WITH_MAX("crd_bg_mode", crd_bg_mode, 0, 2);
          SPIDER_PARAM_INT_WITH_MAX("sts_bg_mode", sts_bg_mode, 0, 2);
#endif
          SPIDER_PARAM_LONG_LIST_WITH_MAX("link_status", link_statuses, 0, 3);
          SPIDER_PARAM_LONG_LIST_WITH_MAX("use_handler", use_handlers, 0, 3);
          SPIDER_PARAM_INT_WITH_MAX("casual_read", casual_read, 0, 63);
          SPIDER_PARAM_INT("buffer_size", buffer_size, 0);
          error_num = parse.fail(true);
          goto error;
        case 12:
          SPIDER_PARAM_DOUBLE("sts_interval", sts_interval, 0);
          SPIDER_PARAM_DOUBLE("crd_interval", crd_interval, 0);
          SPIDER_PARAM_INT_WITH_MAX("low_mem_read", low_mem_read, 0, 1);
          SPIDER_PARAM_STR_LIST("default_file", tgt_default_files);
          error_num = parse.fail(true);
          goto error;
        case 13:
          SPIDER_PARAM_STR_LIST("default_group", tgt_default_groups);
          SPIDER_PARAM_STR_LIST("sequence_name", tgt_sequence_names);
          error_num = parse.fail(true);
          goto error;
        case 14:
          SPIDER_PARAM_LONGLONG("internal_limit", internal_limit, 0);
#ifndef WITHOUT_SPIDER_BG_SEARCH
          SPIDER_PARAM_LONGLONG("bgs_first_read", bgs_first_read, 0);
#endif
          SPIDER_PARAM_INT_WITH_MAX("read_only_mode", read_only_mode, 0, 1);
          SPIDER_PARAM_LONG_LIST_WITH_MAX("access_balance", access_balances, 0,
            2147483647);
          SPIDER_PARAM_STR_LIST("static_link_id", static_link_ids);
          SPIDER_PARAM_INT_WITH_MAX("store_last_crd", store_last_crd, 0, 1);
          SPIDER_PARAM_INT_WITH_MAX("store_last_sts", store_last_sts, 0, 1);
          error_num = parse.fail(true);
          goto error;
        case 15:
          SPIDER_PARAM_LONGLONG("internal_offset", internal_offset, 0);
          SPIDER_PARAM_INT_WITH_MAX("reset_sql_alloc", reset_sql_alloc, 0, 1);
          SPIDER_PARAM_INT_WITH_MAX("semi_table_lock", semi_table_lock, 0, 1);
          SPIDER_PARAM_LONGLONG("quick_page_byte", quick_page_byte, 0);
          SPIDER_PARAM_LONGLONG("quick_page_size", quick_page_size, 0);
#ifndef WITHOUT_SPIDER_BG_SEARCH
          SPIDER_PARAM_LONGLONG("bgs_second_read", bgs_second_read, 0);
#endif
          SPIDER_PARAM_LONG_LIST_WITH_MAX("monitoring_flag", monitoring_flag, 0, 1);
          SPIDER_PARAM_LONG_LIST_WITH_MAX("monitoring_kind", monitoring_kind, 0, 3);
          SPIDER_PARAM_DOUBLE("semi_split_read", semi_split_read, 0);
          SPIDER_PARAM_LONG_LIST_WITH_MAX("connect_timeout", connect_timeouts,
            0, 2147483647);
          SPIDER_PARAM_LONG_LIST_WITH_MAX("strict_group_by",
            strict_group_bys, 0, 1);
          SPIDER_PARAM_INT_WITH_MAX("error_read_mode", error_read_mode, 0, 1);
          error_num = parse.fail(true);
          goto error;
        case 16:
          SPIDER_PARAM_INT_WITH_MAX(
            "multi_split_read", multi_split_read, 0, 2147483647);
          SPIDER_PARAM_INT_WITH_MAX(
            "selupd_lock_mode", selupd_lock_mode, 0, 2);
          SPIDER_PARAM_INT_WITH_MAX(
            "table_count_mode", table_count_mode, 0, 3);
          SPIDER_PARAM_INT_WITH_MAX(
            "use_pushdown_udf", use_pushdown_udf, 0, 1);
          SPIDER_PARAM_LONGLONG_LIST_WITH_MAX(
            "monitoring_limit", monitoring_limit, 0, 9223372036854775807LL);
          SPIDER_PARAM_INT_WITH_MAX(
            "bulk_update_mode", bulk_update_mode, 0, 2);
          SPIDER_PARAM_INT("bulk_update_size", bulk_update_size, 0);
          SPIDER_PARAM_LONG_LIST_WITH_MAX("net_read_timeout",
            net_read_timeouts, 0, 2147483647);
          SPIDER_PARAM_INT_WITH_MAX(
            "error_write_mode", error_write_mode, 0, 1);
#ifdef HA_CAN_BULK_ACCESS
          SPIDER_PARAM_INT_WITH_MAX(
            "bulk_access_free", bulk_access_free, 0, 1);
#endif
          SPIDER_PARAM_INT_WITH_MAX(
            "query_cache_sync", query_cache_sync, 0, 3);
          error_num = parse.fail(true);
          goto error;
        case 17:
          SPIDER_PARAM_INT_WITH_MAX(
            "internal_optimize", internal_optimize, 0, 1);
          SPIDER_PARAM_INT_WITH_MAX(
            "use_table_charset", use_table_charset, 0, 1);
          SPIDER_PARAM_INT_WITH_MAX(
            "direct_dup_insert", direct_dup_insert, 0, 1);
          SPIDER_PARAM_INT("active_link_count", active_link_count, 1);
          SPIDER_PARAM_LONG_LIST_WITH_MAX("net_write_timeout",
            net_write_timeouts, 0, 2147483647);
#ifdef HA_CAN_FORCE_BULK_DELETE
          SPIDER_PARAM_INT_WITH_MAX(
            "force_bulk_delete", force_bulk_delete, 0, 1);
#endif
#ifdef HA_CAN_FORCE_BULK_UPDATE
          SPIDER_PARAM_INT_WITH_MAX(
            "force_bulk_update", force_bulk_update, 0, 1);
#endif
          error_num = parse.fail(true);
          goto error;
        case 18:
          SPIDER_PARAM_INT_WITH_MAX(
            "select_column_mode", select_column_mode, 0, 1);
#ifndef WITHOUT_SPIDER_BG_SEARCH
          SPIDER_PARAM_LONG_LIST_WITH_MAX(
            "monitoring_bg_flag", monitoring_bg_flag, 0, 1);
          SPIDER_PARAM_LONG_LIST_WITH_MAX(
            "monitoring_bg_kind", monitoring_bg_kind, 0, 3);
#endif
          SPIDER_PARAM_LONGLONG(
            "direct_order_limit", direct_order_limit, 0);
          error_num = parse.fail(true);
          goto error;
        case 19:
          SPIDER_PARAM_INT("init_sql_alloc_size", init_sql_alloc_size, 0);
          SPIDER_PARAM_INT_WITH_MAX(
            "auto_increment_mode", auto_increment_mode, 0, 3);
          SPIDER_PARAM_LONG_LIST_WITH_MAX("bka_table_name_type",
            bka_table_name_types, 0, 1);
          SPIDER_PARAM_INT_WITH_MAX(
            "load_crd_at_startup", load_crd_at_startup, 0, 1);
          SPIDER_PARAM_INT_WITH_MAX(
            "load_sts_at_startup", load_sts_at_startup, 0, 1);
          error_num = parse.fail(true);
          goto error;
        case 20:
          SPIDER_PARAM_LONGLONG_LIST_WITH_MAX(
            "monitoring_server_id", monitoring_sid, 0, 4294967295LL);
          SPIDER_PARAM_INT_WITH_MAX(
            "delete_all_rows_type", delete_all_rows_type, 0, 1);
          SPIDER_PARAM_INT_WITH_MAX(
            "skip_parallel_search", skip_parallel_search, 0, 3);
          error_num = parse.fail(true);
          goto error;
        case 21:
          SPIDER_PARAM_LONGLONG(
            "semi_split_read_limit", semi_split_read_limit, 0);
          error_num = parse.fail(true);
          goto error;
        case 22:
          SPIDER_PARAM_LONG_LIST_WITH_MAX(
            "ssl_verify_server_cert", tgt_ssl_vscs, 0, 1);
#ifndef WITHOUT_SPIDER_BG_SEARCH
          SPIDER_PARAM_LONGLONG_LIST_WITH_MAX(
            "monitoring_bg_interval", monitoring_bg_interval, 0, 4294967295LL);
#endif
          SPIDER_PARAM_INT_WITH_MAX(
            "skip_default_condition", skip_default_condition, 0, 1);
          SPIDER_PARAM_LONGLONG(
            "static_mean_rec_length", static_mean_rec_length, 0);
          error_num = parse.fail(true);
          goto error;
        case 23:
          SPIDER_PARAM_INT_WITH_MAX(
            "internal_optimize_local", internal_optimize_local, 0, 1);
          error_num = parse.fail(true);
          goto error;
        case 25:
          SPIDER_PARAM_LONGLONG("static_records_for_status",
            static_records_for_status, 0);
          SPIDER_PARAM_NUMHINT("static_key_cardinality", static_key_cardinality,
            3, (int) table_share->keys, spider_set_ll_value);
          error_num = parse.fail(true);
          goto error;
        case 26:
          SPIDER_PARAM_INT_WITH_MAX(
            "semi_table_lock_connection", semi_table_lock_conn, 0, 1);
          error_num = parse.fail(true);
          goto error;
        case 32:
          SPIDER_PARAM_LONG_LIST_WITH_MAX("monitoring_binlog_pos_at_failing",
            monitoring_binlog_pos_at_failing, 0, 2);
          error_num = parse.fail(true);
          goto error;
        default:
          error_num = parse.fail(true);
          goto error;
      }
      /* Restore delim */
      *parse.end_value= parse.delim_value;
    }
  }

  /* check all_link_count */
  share->all_link_count = 1;
  if (share->all_link_count < share->server_names_length)
    share->all_link_count = share->server_names_length;
  if (share->all_link_count < share->tgt_table_names_length)
    share->all_link_count = share->tgt_table_names_length;
  if (share->all_link_count < share->tgt_dbs_length)
    share->all_link_count = share->tgt_dbs_length;
  if (share->all_link_count < share->tgt_hosts_length)
    share->all_link_count = share->tgt_hosts_length;
  if (share->all_link_count < share->tgt_usernames_length)
    share->all_link_count = share->tgt_usernames_length;
  if (share->all_link_count < share->tgt_passwords_length)
    share->all_link_count = share->tgt_passwords_length;
  if (share->all_link_count < share->tgt_sockets_length)
    share->all_link_count = share->tgt_sockets_length;
  if (share->all_link_count < share->tgt_wrappers_length)
    share->all_link_count = share->tgt_wrappers_length;
  if (share->all_link_count < share->tgt_ssl_cas_length)
    share->all_link_count = share->tgt_ssl_cas_length;
  if (share->all_link_count < share->tgt_ssl_capaths_length)
    share->all_link_count = share->tgt_ssl_capaths_length;
  if (share->all_link_count < share->tgt_ssl_certs_length)
    share->all_link_count = share->tgt_ssl_certs_length;
  if (share->all_link_count < share->tgt_ssl_ciphers_length)
    share->all_link_count = share->tgt_ssl_ciphers_length;
  if (share->all_link_count < share->tgt_ssl_keys_length)
    share->all_link_count = share->tgt_ssl_keys_length;
  if (share->all_link_count < share->tgt_default_files_length)
    share->all_link_count = share->tgt_default_files_length;
  if (share->all_link_count < share->tgt_default_groups_length)
    share->all_link_count = share->tgt_default_groups_length;
  if (share->all_link_count < share->tgt_dsns_length)
    share->all_link_count = share->tgt_dsns_length;
  if (share->all_link_count < share->tgt_pk_names_length)
    share->all_link_count = share->tgt_pk_names_length;
  if (share->all_link_count < share->tgt_sequence_names_length)
    share->all_link_count = share->tgt_sequence_names_length;
  if (share->all_link_count < share->static_link_ids_length)
    share->all_link_count = share->static_link_ids_length;
  if (share->all_link_count < share->tgt_ports_length)
    share->all_link_count = share->tgt_ports_length;
  if (share->all_link_count < share->tgt_ssl_vscs_length)
    share->all_link_count = share->tgt_ssl_vscs_length;
  if (share->all_link_count < share->link_statuses_length)
    share->all_link_count = share->link_statuses_length;
  if (share->all_link_count < share->monitoring_binlog_pos_at_failing_length)
    share->all_link_count = share->monitoring_binlog_pos_at_failing_length;
  if (share->all_link_count < share->monitoring_flag_length)
    share->all_link_count = share->monitoring_flag_length;
  if (share->all_link_count < share->monitoring_kind_length)
    share->all_link_count = share->monitoring_kind_length;
  if (share->all_link_count < share->monitoring_limit_length)
    share->all_link_count = share->monitoring_limit_length;
  if (share->all_link_count < share->monitoring_sid_length)
    share->all_link_count = share->monitoring_sid_length;
#ifndef WITHOUT_SPIDER_BG_SEARCH
  if (share->all_link_count < share->monitoring_bg_flag_length)
    share->all_link_count = share->monitoring_bg_flag_length;
  if (share->all_link_count < share->monitoring_bg_kind_length)
    share->all_link_count = share->monitoring_bg_kind_length;
  if (share->all_link_count < share->monitoring_bg_interval_length)
    share->all_link_count = share->monitoring_bg_interval_length;
#endif
  if (share->all_link_count < share->use_handlers_length)
    share->all_link_count = share->use_handlers_length;
  if (share->all_link_count < share->connect_timeouts_length)
    share->all_link_count = share->connect_timeouts_length;
  if (share->all_link_count < share->net_read_timeouts_length)
    share->all_link_count = share->net_read_timeouts_length;
  if (share->all_link_count < share->net_write_timeouts_length)
    share->all_link_count = share->net_write_timeouts_length;
  if (share->all_link_count < share->access_balances_length)
    share->all_link_count = share->access_balances_length;
  if (share->all_link_count < share->bka_table_name_types_length)
    share->all_link_count = share->bka_table_name_types_length;
  if (share->all_link_count < share->strict_group_bys_length)
    share->all_link_count = share->strict_group_bys_length;
  if ((error_num = spider_increase_string_list(
    &share->server_names,
    &share->server_names_lengths,
    &share->server_names_length,
    &share->server_names_charlen,
    share->all_link_count)))
    goto error;
  if ((error_num = spider_increase_string_list(
    &share->tgt_table_names,
    &share->tgt_table_names_lengths,
    &share->tgt_table_names_length,
    &share->tgt_table_names_charlen,
    share->all_link_count)))
    goto error;
  if ((error_num = spider_increase_string_list(
    &share->tgt_dbs,
    &share->tgt_dbs_lengths,
    &share->tgt_dbs_length,
    &share->tgt_dbs_charlen,
    share->all_link_count)))
    goto error;
  if ((error_num = spider_increase_string_list(
    &share->tgt_hosts,
    &share->tgt_hosts_lengths,
    &share->tgt_hosts_length,
    &share->tgt_hosts_charlen,
    share->all_link_count)))
    goto error;
  if ((error_num = spider_increase_string_list(
    &share->tgt_usernames,
    &share->tgt_usernames_lengths,
    &share->tgt_usernames_length,
    &share->tgt_usernames_charlen,
    share->all_link_count)))
    goto error;
  if ((error_num = spider_increase_string_list(
    &share->tgt_passwords,
    &share->tgt_passwords_lengths,
    &share->tgt_passwords_length,
    &share->tgt_passwords_charlen,
    share->all_link_count)))
    goto error;
  if ((error_num = spider_increase_string_list(
    &share->tgt_sockets,
    &share->tgt_sockets_lengths,
    &share->tgt_sockets_length,
    &share->tgt_sockets_charlen,
    share->all_link_count)))
    goto error;
  if ((error_num = spider_increase_string_list(
    &share->tgt_wrappers,
    &share->tgt_wrappers_lengths,
    &share->tgt_wrappers_length,
    &share->tgt_wrappers_charlen,
    share->all_link_count)))
    goto error;
  if ((error_num = spider_increase_string_list(
    &share->tgt_ssl_cas,
    &share->tgt_ssl_cas_lengths,
    &share->tgt_ssl_cas_length,
    &share->tgt_ssl_cas_charlen,
    share->all_link_count)))
    goto error;
  if ((error_num = spider_increase_string_list(
    &share->tgt_ssl_capaths,
    &share->tgt_ssl_capaths_lengths,
    &share->tgt_ssl_capaths_length,
    &share->tgt_ssl_capaths_charlen,
    share->all_link_count)))
    goto error;
  if ((error_num = spider_increase_string_list(
    &share->tgt_ssl_certs,
    &share->tgt_ssl_certs_lengths,
    &share->tgt_ssl_certs_length,
    &share->tgt_ssl_certs_charlen,
    share->all_link_count)))
    goto error;
  if ((error_num = spider_increase_string_list(
    &share->tgt_ssl_ciphers,
    &share->tgt_ssl_ciphers_lengths,
    &share->tgt_ssl_ciphers_length,
    &share->tgt_ssl_ciphers_charlen,
    share->all_link_count)))
    goto error;
  if ((error_num = spider_increase_string_list(
    &share->tgt_ssl_keys,
    &share->tgt_ssl_keys_lengths,
    &share->tgt_ssl_keys_length,
    &share->tgt_ssl_keys_charlen,
    share->all_link_count)))
    goto error;
  if ((error_num = spider_increase_string_list(
    &share->tgt_default_files,
    &share->tgt_default_files_lengths,
    &share->tgt_default_files_length,
    &share->tgt_default_files_charlen,
    share->all_link_count)))
    goto error;
  if ((error_num = spider_increase_string_list(
    &share->tgt_default_groups,
    &share->tgt_default_groups_lengths,
    &share->tgt_default_groups_length,
    &share->tgt_default_groups_charlen,
    share->all_link_count)))
    goto error;
  if ((error_num = spider_increase_string_list(
    &share->tgt_dsns,
    &share->tgt_dsns_lengths,
    &share->tgt_dsns_length,
    &share->tgt_dsns_charlen,
    share->all_link_count)))
    goto error;
  if ((error_num = spider_increase_string_list(
    &share->tgt_pk_names,
    &share->tgt_pk_names_lengths,
    &share->tgt_pk_names_length,
    &share->tgt_pk_names_charlen,
    share->all_link_count)))
    goto error;
  if ((error_num = spider_increase_string_list(
    &share->tgt_sequence_names,
    &share->tgt_sequence_names_lengths,
    &share->tgt_sequence_names_length,
    &share->tgt_sequence_names_charlen,
    share->all_link_count)))
    goto error;
  if ((error_num = spider_increase_null_string_list(
    &share->static_link_ids,
    &share->static_link_ids_lengths,
    &share->static_link_ids_length,
    &share->static_link_ids_charlen,
    share->all_link_count)))
    goto error;
  if ((error_num = spider_increase_long_list(
    &share->tgt_ports,
    &share->tgt_ports_length,
    share->all_link_count)))
    goto error;
  if ((error_num = spider_increase_long_list(
    &share->tgt_ssl_vscs,
    &share->tgt_ssl_vscs_length,
    share->all_link_count)))
    goto error;
  if ((error_num = spider_increase_long_list(
    &share->link_statuses,
    &share->link_statuses_length,
    share->all_link_count)))
    goto error;
#ifndef WITHOUT_SPIDER_BG_SEARCH
  if ((error_num = spider_increase_long_list(
    &share->monitoring_bg_flag,
    &share->monitoring_bg_flag_length,
    share->all_link_count)))
    goto error;
  if ((error_num = spider_increase_long_list(
    &share->monitoring_bg_kind,
    &share->monitoring_bg_kind_length,
    share->all_link_count)))
    goto error;
#endif
  if ((error_num = spider_increase_long_list(
    &share->monitoring_binlog_pos_at_failing,
    &share->monitoring_binlog_pos_at_failing_length,
    share->all_link_count)))
    goto error;
  if ((error_num = spider_increase_long_list(
    &share->monitoring_flag,
    &share->monitoring_flag_length,
    share->all_link_count)))
    goto error;
  if ((error_num = spider_increase_long_list(
    &share->monitoring_kind,
    &share->monitoring_kind_length,
    share->all_link_count)))
    goto error;
#ifndef WITHOUT_SPIDER_BG_SEARCH
  if ((error_num = spider_increase_longlong_list(
    &share->monitoring_bg_interval,
    &share->monitoring_bg_interval_length,
    share->all_link_count)))
    goto error;
#endif
  if ((error_num = spider_increase_longlong_list(
    &share->monitoring_limit,
    &share->monitoring_limit_length,
    share->all_link_count)))
    goto error;
  if ((error_num = spider_increase_longlong_list(
    &share->monitoring_sid,
    &share->monitoring_sid_length,
    share->all_link_count)))
    goto error;
  if ((error_num = spider_increase_long_list(
    &share->use_handlers,
    &share->use_handlers_length,
    share->all_link_count)))
    goto error;
  if ((error_num = spider_increase_long_list(
    &share->connect_timeouts,
    &share->connect_timeouts_length,
    share->all_link_count)))
    goto error;
  if ((error_num = spider_increase_long_list(
    &share->net_read_timeouts,
    &share->net_read_timeouts_length,
    share->all_link_count)))
    goto error;
  if ((error_num = spider_increase_long_list(
    &share->net_write_timeouts,
    &share->net_write_timeouts_length,
    share->all_link_count)))
    goto error;
  if ((error_num = spider_increase_long_list(
    &share->access_balances,
    &share->access_balances_length,
    share->all_link_count)))
    goto error;
  if ((error_num = spider_increase_long_list(
    &share->bka_table_name_types,
    &share->bka_table_name_types_length,
    share->all_link_count)))
    goto error;
  if ((error_num = spider_increase_long_list(
    &share->strict_group_bys,
    &share->strict_group_bys_length,
    share->all_link_count)))
    goto error;

  /* copy for tables start */
  share_alter = &share->alter_table;
  share_alter->all_link_count = share->all_link_count;
  if (!(share_alter->tmp_server_names = (char **)
    spider_bulk_malloc(spider_current_trx, SPD_MID_PARSE_CONNECT_INFO_1, MYF(MY_WME | MY_ZEROFILL),
      &share_alter->tmp_server_names,
      (uint) (sizeof(char *) * share->all_link_count),
      &share_alter->tmp_tgt_table_names,
      (uint) (sizeof(char *) * share->all_link_count),
      &share_alter->tmp_tgt_dbs,
      (uint) (sizeof(char *) * share->all_link_count),
      &share_alter->tmp_tgt_hosts,
      (uint) (sizeof(char *) * share->all_link_count),
      &share_alter->tmp_tgt_usernames,
      (uint) (sizeof(char *) * share->all_link_count),
      &share_alter->tmp_tgt_passwords,
      (uint) (sizeof(char *) * share->all_link_count),
      &share_alter->tmp_tgt_sockets,
      (uint) (sizeof(char *) * share->all_link_count),
      &share_alter->tmp_tgt_wrappers,
      (uint) (sizeof(char *) * share->all_link_count),
      &share_alter->tmp_tgt_ssl_cas,
      (uint) (sizeof(char *) * share->all_link_count),
      &share_alter->tmp_tgt_ssl_capaths,
      (uint) (sizeof(char *) * share->all_link_count),
      &share_alter->tmp_tgt_ssl_certs,
      (uint) (sizeof(char *) * share->all_link_count),
      &share_alter->tmp_tgt_ssl_ciphers,
      (uint) (sizeof(char *) * share->all_link_count),
      &share_alter->tmp_tgt_ssl_keys,
      (uint) (sizeof(char *) * share->all_link_count),
      &share_alter->tmp_tgt_default_files,
      (uint) (sizeof(char *) * share->all_link_count),
      &share_alter->tmp_tgt_default_groups,
      (uint) (sizeof(char *) * share->all_link_count),
      &share_alter->tmp_tgt_dsns,
      (uint) (sizeof(char *) * share->all_link_count),
      &share_alter->tmp_static_link_ids,
      (uint) (sizeof(char *) * share->all_link_count),
      &share_alter->tmp_server_names_lengths,
      (uint) (sizeof(uint *) * share->all_link_count),
      &share_alter->tmp_tgt_table_names_lengths,
      (uint) (sizeof(uint *) * share->all_link_count),
      &share_alter->tmp_tgt_dbs_lengths,
      (uint) (sizeof(uint *) * share->all_link_count),
      &share_alter->tmp_tgt_hosts_lengths,
      (uint) (sizeof(uint *) * share->all_link_count),
      &share_alter->tmp_tgt_usernames_lengths,
      (uint) (sizeof(uint *) * share->all_link_count),
      &share_alter->tmp_tgt_passwords_lengths,
      (uint) (sizeof(uint *) * share->all_link_count),
      &share_alter->tmp_tgt_sockets_lengths,
      (uint) (sizeof(uint *) * share->all_link_count),
      &share_alter->tmp_tgt_wrappers_lengths,
      (uint) (sizeof(uint *) * share->all_link_count),
      &share_alter->tmp_tgt_ssl_cas_lengths,
      (uint) (sizeof(uint *) * share->all_link_count),
      &share_alter->tmp_tgt_ssl_capaths_lengths,
      (uint) (sizeof(uint *) * share->all_link_count),
      &share_alter->tmp_tgt_ssl_certs_lengths,
      (uint) (sizeof(uint *) * share->all_link_count),
      &share_alter->tmp_tgt_ssl_ciphers_lengths,
      (uint) (sizeof(uint *) * share->all_link_count),
      &share_alter->tmp_tgt_ssl_keys_lengths,
      (uint) (sizeof(uint *) * share->all_link_count),
      &share_alter->tmp_tgt_default_files_lengths,
      (uint) (sizeof(uint *) * share->all_link_count),
      &share_alter->tmp_tgt_default_groups_lengths,
      (uint) (sizeof(uint *) * share->all_link_count),
      &share_alter->tmp_tgt_dsns_lengths,
      (uint) (sizeof(uint *) * share->all_link_count),
      &share_alter->tmp_static_link_ids_lengths,
      (uint) (sizeof(uint *) * share->all_link_count),
      &share_alter->tmp_tgt_ports,
      (uint) (sizeof(long) * share->all_link_count),
      &share_alter->tmp_tgt_ssl_vscs,
      (uint) (sizeof(long) * share->all_link_count),
      &share_alter->tmp_monitoring_binlog_pos_at_failing,
      (uint) (sizeof(long) * share->all_link_count),
      &share_alter->tmp_link_statuses,
      (uint) (sizeof(long) * share->all_link_count),
      NullS))
  ) {
    error_num = HA_ERR_OUT_OF_MEM;
    goto error;
  }


  memcpy(share_alter->tmp_server_names, share->server_names,
    sizeof(char *) * share->all_link_count);
  memcpy(share_alter->tmp_tgt_table_names, share->tgt_table_names,
    sizeof(char *) * share->all_link_count);
  memcpy(share_alter->tmp_tgt_dbs, share->tgt_dbs,
    sizeof(char *) * share->all_link_count);
  memcpy(share_alter->tmp_tgt_hosts, share->tgt_hosts,
    sizeof(char *) * share->all_link_count);
  memcpy(share_alter->tmp_tgt_usernames, share->tgt_usernames,
    sizeof(char *) * share->all_link_count);
  memcpy(share_alter->tmp_tgt_passwords, share->tgt_passwords,
    sizeof(char *) * share->all_link_count);
  memcpy(share_alter->tmp_tgt_sockets, share->tgt_sockets,
    sizeof(char *) * share->all_link_count);
  memcpy(share_alter->tmp_tgt_wrappers, share->tgt_wrappers,
    sizeof(char *) * share->all_link_count);
  memcpy(share_alter->tmp_tgt_ssl_cas, share->tgt_ssl_cas,
    sizeof(char *) * share->all_link_count);
  memcpy(share_alter->tmp_tgt_ssl_capaths, share->tgt_ssl_capaths,
    sizeof(char *) * share->all_link_count);
  memcpy(share_alter->tmp_tgt_ssl_certs, share->tgt_ssl_certs,
    sizeof(char *) * share->all_link_count);
  memcpy(share_alter->tmp_tgt_ssl_ciphers, share->tgt_ssl_ciphers,
    sizeof(char *) * share->all_link_count);
  memcpy(share_alter->tmp_tgt_ssl_keys, share->tgt_ssl_keys,
    sizeof(char *) * share->all_link_count);
  memcpy(share_alter->tmp_tgt_default_files, share->tgt_default_files,
    sizeof(char *) * share->all_link_count);
  memcpy(share_alter->tmp_tgt_default_groups, share->tgt_default_groups,
    sizeof(char *) * share->all_link_count);
  memcpy(share_alter->tmp_tgt_dsns, share->tgt_dsns,
    sizeof(char *) * share->all_link_count);
  memcpy(share_alter->tmp_static_link_ids, share->static_link_ids,
    sizeof(char *) * share->all_link_count);

  memcpy(share_alter->tmp_tgt_ports, share->tgt_ports,
    sizeof(long) * share->all_link_count);
  memcpy(share_alter->tmp_tgt_ssl_vscs, share->tgt_ssl_vscs,
    sizeof(long) * share->all_link_count);
  memcpy(share_alter->tmp_monitoring_binlog_pos_at_failing,
    share->monitoring_binlog_pos_at_failing,
    sizeof(long) * share->all_link_count);
  memcpy(share_alter->tmp_link_statuses, share->link_statuses,
    sizeof(long) * share->all_link_count);

  memcpy(share_alter->tmp_server_names_lengths,
    share->server_names_lengths,
    sizeof(uint) * share->all_link_count);
  memcpy(share_alter->tmp_tgt_table_names_lengths,
    share->tgt_table_names_lengths,
    sizeof(uint) * share->all_link_count);
  memcpy(share_alter->tmp_tgt_dbs_lengths, share->tgt_dbs_lengths,
    sizeof(uint) * share->all_link_count);
  memcpy(share_alter->tmp_tgt_hosts_lengths, share->tgt_hosts_lengths,
    sizeof(uint) * share->all_link_count);
  memcpy(share_alter->tmp_tgt_usernames_lengths,
    share->tgt_usernames_lengths,
    sizeof(uint) * share->all_link_count);
  memcpy(share_alter->tmp_tgt_passwords_lengths,
    share->tgt_passwords_lengths,
    sizeof(uint) * share->all_link_count);
  memcpy(share_alter->tmp_tgt_sockets_lengths, share->tgt_sockets_lengths,
    sizeof(uint) * share->all_link_count);
  memcpy(share_alter->tmp_tgt_wrappers_lengths,
    share->tgt_wrappers_lengths,
    sizeof(uint) * share->all_link_count);
  memcpy(share_alter->tmp_tgt_ssl_cas_lengths,
    share->tgt_ssl_cas_lengths,
    sizeof(uint) * share->all_link_count);
  memcpy(share_alter->tmp_tgt_ssl_capaths_lengths,
    share->tgt_ssl_capaths_lengths,
    sizeof(uint) * share->all_link_count);
  memcpy(share_alter->tmp_tgt_ssl_certs_lengths,
    share->tgt_ssl_certs_lengths,
    sizeof(uint) * share->all_link_count);
  memcpy(share_alter->tmp_tgt_ssl_ciphers_lengths,
    share->tgt_ssl_ciphers_lengths,
    sizeof(uint) * share->all_link_count);
  memcpy(share_alter->tmp_tgt_ssl_keys_lengths,
    share->tgt_ssl_keys_lengths,
    sizeof(uint) * share->all_link_count);
  memcpy(share_alter->tmp_tgt_default_files_lengths,
    share->tgt_default_files_lengths,
    sizeof(uint) * share->all_link_count);
  memcpy(share_alter->tmp_tgt_default_groups_lengths,
    share->tgt_default_groups_lengths,
    sizeof(uint) * share->all_link_count);
  memcpy(share_alter->tmp_tgt_dsns_lengths,
    share->tgt_dsns_lengths,
    sizeof(uint) * share->all_link_count);
  memcpy(share_alter->tmp_static_link_ids_lengths,
    share->static_link_ids_lengths,
    sizeof(uint) * share->all_link_count);

  share_alter->tmp_server_names_charlen = share->server_names_charlen;
  share_alter->tmp_tgt_table_names_charlen = share->tgt_table_names_charlen;
  share_alter->tmp_tgt_dbs_charlen = share->tgt_dbs_charlen;
  share_alter->tmp_tgt_hosts_charlen = share->tgt_hosts_charlen;
  share_alter->tmp_tgt_usernames_charlen = share->tgt_usernames_charlen;
  share_alter->tmp_tgt_passwords_charlen = share->tgt_passwords_charlen;
  share_alter->tmp_tgt_sockets_charlen = share->tgt_sockets_charlen;
  share_alter->tmp_tgt_wrappers_charlen = share->tgt_wrappers_charlen;
  share_alter->tmp_tgt_ssl_cas_charlen = share->tgt_ssl_cas_charlen;
  share_alter->tmp_tgt_ssl_capaths_charlen = share->tgt_ssl_capaths_charlen;
  share_alter->tmp_tgt_ssl_certs_charlen = share->tgt_ssl_certs_charlen;
  share_alter->tmp_tgt_ssl_ciphers_charlen = share->tgt_ssl_ciphers_charlen;
  share_alter->tmp_tgt_ssl_keys_charlen = share->tgt_ssl_keys_charlen;
  share_alter->tmp_tgt_default_files_charlen =
    share->tgt_default_files_charlen;
  share_alter->tmp_tgt_default_groups_charlen =
    share->tgt_default_groups_charlen;
  share_alter->tmp_tgt_dsns_charlen =
    share->tgt_dsns_charlen;
  share_alter->tmp_static_link_ids_charlen =
    share->static_link_ids_charlen;

  share_alter->tmp_server_names_length = share->server_names_length;
  share_alter->tmp_tgt_table_names_length = share->tgt_table_names_length;
  share_alter->tmp_tgt_dbs_length = share->tgt_dbs_length;
  share_alter->tmp_tgt_hosts_length = share->tgt_hosts_length;
  share_alter->tmp_tgt_usernames_length = share->tgt_usernames_length;
  share_alter->tmp_tgt_passwords_length = share->tgt_passwords_length;
  share_alter->tmp_tgt_sockets_length = share->tgt_sockets_length;
  share_alter->tmp_tgt_wrappers_length = share->tgt_wrappers_length;
  share_alter->tmp_tgt_ssl_cas_length = share->tgt_ssl_cas_length;
  share_alter->tmp_tgt_ssl_capaths_length = share->tgt_ssl_capaths_length;
  share_alter->tmp_tgt_ssl_certs_length = share->tgt_ssl_certs_length;
  share_alter->tmp_tgt_ssl_ciphers_length = share->tgt_ssl_ciphers_length;
  share_alter->tmp_tgt_ssl_keys_length = share->tgt_ssl_keys_length;
  share_alter->tmp_tgt_default_files_length = share->tgt_default_files_length;
  share_alter->tmp_tgt_default_groups_length =
    share->tgt_default_groups_length;
  share_alter->tmp_tgt_dsns_length =
    share->tgt_dsns_length;
  share_alter->tmp_static_link_ids_length =
    share->static_link_ids_length;
  share_alter->tmp_tgt_ports_length = share->tgt_ports_length;
  share_alter->tmp_tgt_ssl_vscs_length = share->tgt_ssl_vscs_length;
  share_alter->tmp_monitoring_binlog_pos_at_failing_length =
    share->monitoring_binlog_pos_at_failing_length;
  share_alter->tmp_link_statuses_length = share->link_statuses_length;
  /* copy for tables end */

  if ((error_num = spider_set_connect_info_default(
    share,
#ifdef WITH_PARTITION_STORAGE_ENGINE
    part_elem,
    sub_elem,
#endif
    table_share
  )))
    goto error;

  if (create_table)
  {
    for (int roop_count = 0; roop_count < (int) share->all_link_count;
         roop_count++)
    {
      int roop_count2;
      for (roop_count2 = 0; roop_count2 < SPIDER_DBTON_SIZE; roop_count2++)
      {
        if (
          spider_dbton[roop_count2].wrapper &&
          !strcasecmp(share->tgt_wrappers[roop_count],
            spider_dbton[roop_count2].wrapper)
        ) {
          break;
        }
      }
      if (roop_count2 == SPIDER_DBTON_SIZE)
      {
        DBUG_PRINT("info",("spider err tgt_wrappers[%d]=%s", roop_count,
          share->tgt_wrappers[roop_count]));
        error_num = ER_SPIDER_INVALID_CONNECT_INFO_NUM;
        my_printf_error(error_num, ER_SPIDER_INVALID_CONNECT_INFO_STR,
          MYF(0), share->tgt_wrappers[roop_count]);
        goto error;
      }

      DBUG_PRINT("info",
        ("spider server_names_lengths[%d] = %u", roop_count,
         share->server_names_lengths[roop_count]));
      if (share->server_names_lengths[roop_count] > SPIDER_CONNECT_INFO_MAX_LEN)
      {
        error_num = ER_SPIDER_INVALID_CONNECT_INFO_TOO_LONG_NUM;
        my_printf_error(error_num, ER_SPIDER_INVALID_CONNECT_INFO_TOO_LONG_STR,
          MYF(0), share->server_names[roop_count], "server");
        goto error;
      }

      DBUG_PRINT("info",
        ("spider tgt_table_names_lengths[%d] = %u", roop_count,
        share->tgt_table_names_lengths[roop_count]));
      if (share->tgt_table_names_lengths[roop_count] >
        SPIDER_CONNECT_INFO_MAX_LEN)
      {
        error_num = ER_SPIDER_INVALID_CONNECT_INFO_TOO_LONG_NUM;
        my_printf_error(error_num, ER_SPIDER_INVALID_CONNECT_INFO_TOO_LONG_STR,
          MYF(0), share->tgt_table_names[roop_count], "table");
        goto error;
      }

      DBUG_PRINT("info",
        ("spider tgt_dbs_lengths[%d] = %u", roop_count,
        share->tgt_dbs_lengths[roop_count]));
      if (share->tgt_dbs_lengths[roop_count] > SPIDER_CONNECT_INFO_MAX_LEN)
      {
        error_num = ER_SPIDER_INVALID_CONNECT_INFO_TOO_LONG_NUM;
        my_printf_error(error_num, ER_SPIDER_INVALID_CONNECT_INFO_TOO_LONG_STR,
          MYF(0), share->tgt_dbs[roop_count], "database");
        goto error;
      }

      DBUG_PRINT("info",
        ("spider tgt_hosts_lengths[%d] = %u", roop_count,
        share->tgt_hosts_lengths[roop_count]));
      if (share->tgt_hosts_lengths[roop_count] > SPIDER_CONNECT_INFO_MAX_LEN)
      {
        error_num = ER_SPIDER_INVALID_CONNECT_INFO_TOO_LONG_NUM;
        my_printf_error(error_num, ER_SPIDER_INVALID_CONNECT_INFO_TOO_LONG_STR,
          MYF(0), share->tgt_hosts[roop_count], "host");
        goto error;
      }

      DBUG_PRINT("info",
        ("spider tgt_usernames_lengths[%d] = %u", roop_count,
        share->tgt_usernames_lengths[roop_count]));
      if (share->tgt_usernames_lengths[roop_count] >
        SPIDER_CONNECT_INFO_MAX_LEN)
      {
        error_num = ER_SPIDER_INVALID_CONNECT_INFO_TOO_LONG_NUM;
        my_printf_error(error_num, ER_SPIDER_INVALID_CONNECT_INFO_TOO_LONG_STR,
          MYF(0), share->tgt_usernames[roop_count], "user");
        goto error;
      }

      DBUG_PRINT("info",
        ("spider tgt_passwords_lengths[%d] = %u", roop_count,
        share->tgt_passwords_lengths[roop_count]));
      if (share->tgt_passwords_lengths[roop_count] >
        SPIDER_CONNECT_INFO_MAX_LEN)
      {
        error_num = ER_SPIDER_INVALID_CONNECT_INFO_TOO_LONG_NUM;
        my_printf_error(error_num, ER_SPIDER_INVALID_CONNECT_INFO_TOO_LONG_STR,
          MYF(0), share->tgt_passwords[roop_count], "password");
        goto error;
      }

      DBUG_PRINT("info",
        ("spider tgt_sockets_lengths[%d] = %u", roop_count,
        share->tgt_sockets_lengths[roop_count]));
      if (share->tgt_sockets_lengths[roop_count] >
        SPIDER_CONNECT_INFO_PATH_MAX_LEN)
      {
        error_num = ER_SPIDER_INVALID_CONNECT_INFO_TOO_LONG_NUM;
        my_printf_error(error_num, ER_SPIDER_INVALID_CONNECT_INFO_TOO_LONG_STR,
          MYF(0), share->tgt_sockets[roop_count], "socket");
        goto error;
      }

      DBUG_PRINT("info",
        ("spider tgt_wrappers_lengths[%d] = %u", roop_count,
        share->tgt_wrappers_lengths[roop_count]));
      if (share->tgt_wrappers_lengths[roop_count] >
        SPIDER_CONNECT_INFO_MAX_LEN)
      {
        error_num = ER_SPIDER_INVALID_CONNECT_INFO_TOO_LONG_NUM;
        my_printf_error(error_num, ER_SPIDER_INVALID_CONNECT_INFO_TOO_LONG_STR,
          MYF(0), share->tgt_wrappers[roop_count], "wrapper");
        goto error;
      }

      DBUG_PRINT("info",
        ("spider tgt_ssl_cas_lengths[%d] = %u", roop_count,
        share->tgt_ssl_cas_lengths[roop_count]));
      if (share->tgt_ssl_cas_lengths[roop_count] >
        SPIDER_CONNECT_INFO_PATH_MAX_LEN)
      {
        error_num = ER_SPIDER_INVALID_CONNECT_INFO_TOO_LONG_NUM;
        my_printf_error(error_num, ER_SPIDER_INVALID_CONNECT_INFO_TOO_LONG_STR,
          MYF(0), share->tgt_ssl_cas[roop_count], "ssl_ca");
        goto error;
      }

      DBUG_PRINT("info",
        ("spider tgt_ssl_capaths_lengths[%d] = %u", roop_count,
        share->tgt_ssl_capaths_lengths[roop_count]));
      if (share->tgt_ssl_capaths_lengths[roop_count] >
        SPIDER_CONNECT_INFO_PATH_MAX_LEN)
      {
        error_num = ER_SPIDER_INVALID_CONNECT_INFO_TOO_LONG_NUM;
        my_printf_error(error_num, ER_SPIDER_INVALID_CONNECT_INFO_TOO_LONG_STR,
          MYF(0), share->tgt_ssl_capaths[roop_count], "ssl_capath");
        goto error;
      }

      DBUG_PRINT("info",
        ("spider tgt_ssl_certs_lengths[%d] = %u", roop_count,
        share->tgt_ssl_certs_lengths[roop_count]));
      if (share->tgt_ssl_certs_lengths[roop_count] >
        SPIDER_CONNECT_INFO_PATH_MAX_LEN)
      {
        error_num = ER_SPIDER_INVALID_CONNECT_INFO_TOO_LONG_NUM;
        my_printf_error(error_num, ER_SPIDER_INVALID_CONNECT_INFO_TOO_LONG_STR,
          MYF(0), share->tgt_ssl_certs[roop_count], "ssl_cert");
        goto error;
      }

      DBUG_PRINT("info",
        ("spider tgt_ssl_ciphers_lengths[%d] = %u", roop_count,
        share->tgt_ssl_ciphers_lengths[roop_count]));
      if (share->tgt_ssl_ciphers_lengths[roop_count] >
        SPIDER_CONNECT_INFO_MAX_LEN)
      {
        error_num = ER_SPIDER_INVALID_CONNECT_INFO_TOO_LONG_NUM;
        my_printf_error(error_num, ER_SPIDER_INVALID_CONNECT_INFO_TOO_LONG_STR,
          MYF(0), share->tgt_ssl_ciphers[roop_count], "ssl_cipher");
        goto error;
      }

      DBUG_PRINT("info",
        ("spider tgt_ssl_keys_lengths[%d] = %u", roop_count,
        share->tgt_ssl_keys_lengths[roop_count]));
      if (share->tgt_ssl_keys_lengths[roop_count] >
        SPIDER_CONNECT_INFO_PATH_MAX_LEN)
      {
        error_num = ER_SPIDER_INVALID_CONNECT_INFO_TOO_LONG_NUM;
        my_printf_error(error_num, ER_SPIDER_INVALID_CONNECT_INFO_TOO_LONG_STR,
          MYF(0), share->tgt_ssl_keys[roop_count], "ssl_key");
        goto error;
      }

      DBUG_PRINT("info",
        ("spider tgt_default_files_lengths[%d] = %u", roop_count,
        share->tgt_default_files_lengths[roop_count]));
      if (share->tgt_default_files_lengths[roop_count] >
        SPIDER_CONNECT_INFO_PATH_MAX_LEN)
      {
        error_num = ER_SPIDER_INVALID_CONNECT_INFO_TOO_LONG_NUM;
        my_printf_error(error_num, ER_SPIDER_INVALID_CONNECT_INFO_TOO_LONG_STR,
          MYF(0), share->tgt_default_files[roop_count], "default_file");
        goto error;
      }

      DBUG_PRINT("info",
        ("spider tgt_default_groups_lengths[%d] = %u", roop_count,
        share->tgt_default_groups_lengths[roop_count]));
      if (share->tgt_default_groups_lengths[roop_count] >
        SPIDER_CONNECT_INFO_MAX_LEN)
      {
        error_num = ER_SPIDER_INVALID_CONNECT_INFO_TOO_LONG_NUM;
        my_printf_error(error_num, ER_SPIDER_INVALID_CONNECT_INFO_TOO_LONG_STR,
          MYF(0), share->tgt_default_groups[roop_count], "default_group");
        goto error;
      }

      DBUG_PRINT("info",
        ("spider tgt_dsns_lengths[%d] = %u", roop_count,
        share->tgt_dsns_lengths[roop_count]));
      if (share->tgt_dsns_lengths[roop_count] >
        SPIDER_CONNECT_INFO_MAX_LEN)
      {
        error_num = ER_SPIDER_INVALID_CONNECT_INFO_TOO_LONG_NUM;
        my_printf_error(error_num, ER_SPIDER_INVALID_CONNECT_INFO_TOO_LONG_STR,
          MYF(0), share->tgt_dsns[roop_count], "default_group");
        goto error;
      }

      DBUG_PRINT("info",
        ("spider tgt_pk_names_lengths[%d] = %u", roop_count,
        share->tgt_pk_names_lengths[roop_count]));
      if (share->tgt_pk_names_lengths[roop_count] >
        SPIDER_CONNECT_INFO_MAX_LEN)
      {
        error_num = ER_SPIDER_INVALID_CONNECT_INFO_TOO_LONG_NUM;
        my_printf_error(error_num, ER_SPIDER_INVALID_CONNECT_INFO_TOO_LONG_STR,
          MYF(0), share->tgt_pk_names[roop_count], "pk_name");
        goto error;
      }

      DBUG_PRINT("info",
        ("spider tgt_sequence_names_lengths[%d] = %u", roop_count,
        share->tgt_sequence_names_lengths[roop_count]));
      if (share->tgt_sequence_names_lengths[roop_count] >
        SPIDER_CONNECT_INFO_MAX_LEN)
      {
        error_num = ER_SPIDER_INVALID_CONNECT_INFO_TOO_LONG_NUM;
        my_printf_error(error_num, ER_SPIDER_INVALID_CONNECT_INFO_TOO_LONG_STR,
          MYF(0), share->tgt_sequence_names[roop_count], "sequence_name");
        goto error;
      }

      DBUG_PRINT("info",
        ("spider static_link_ids_lengths[%d] = %u", roop_count,
        share->static_link_ids_lengths[roop_count]));
      if (share->static_link_ids_lengths[roop_count] >
        SPIDER_CONNECT_INFO_MAX_LEN)
      {
        error_num = ER_SPIDER_INVALID_CONNECT_INFO_TOO_LONG_NUM;
        my_printf_error(error_num, ER_SPIDER_INVALID_CONNECT_INFO_TOO_LONG_STR,
          MYF(0), share->static_link_ids[roop_count], "static_link_id");
        goto error;
      }
      if (share->static_link_ids[roop_count])
      {
        if (
          share->static_link_ids_lengths[roop_count] > 0 &&
          share->static_link_ids[roop_count][0] >= '0' &&
          share->static_link_ids[roop_count][0] <= '9'
        ) {
          error_num = ER_SPIDER_INVALID_CONNECT_INFO_START_WITH_NUM_NUM;
          my_printf_error(error_num,
            ER_SPIDER_INVALID_CONNECT_INFO_START_WITH_NUM_STR,
            MYF(0), share->static_link_ids[roop_count], "static_link_id");
          goto error;
        }
        for (roop_count2 = roop_count + 1;
          roop_count2 < (int) share->all_link_count;
          roop_count2++)
        {
          if (
            share->static_link_ids_lengths[roop_count] ==
              share->static_link_ids_lengths[roop_count2] &&
            !memcmp(share->static_link_ids[roop_count],
              share->static_link_ids[roop_count2],
              share->static_link_ids_lengths[roop_count])
          ) {
            error_num = ER_SPIDER_INVALID_CONNECT_INFO_SAME_NUM;
            my_printf_error(error_num,
              ER_SPIDER_INVALID_CONNECT_INFO_SAME_STR,
              MYF(0), share->static_link_ids[roop_count],
              "static_link_id");
            goto error;
          }
        }
      }
    }
  }

  DBUG_PRINT("info", ("spider share->active_link_count = %d",
    share->active_link_count));
  share->link_count = (uint) share->active_link_count;
  share_alter->link_count = share->link_count;
  share->link_bitmap_size = (share->link_count + 7) / 8;

  if (connect_string)
    spider_free(spider_current_trx, connect_string, MYF(0));
  DBUG_RETURN(0);

error:
  if (connect_string)
    spider_free(spider_current_trx, connect_string, MYF(0));
error_alloc_conn_string:
  DBUG_RETURN(error_num);
}

/* Set default connect info of a SPIDER_SHARE if needed */
int spider_set_connect_info_default(
  SPIDER_SHARE *share,               /* The `SPIDER_SHARE' to set
                                     default connect info */
#ifdef WITH_PARTITION_STORAGE_ENGINE
  partition_element *part_elem, /* partition info used as input */
  partition_element *sub_elem,  /* subpartition info used as input */
#endif
  TABLE_SHARE *table_share      /* table share info used as input */
) {
  bool check_socket;
  bool check_database;
  bool socket_has_default_value;
  bool database_has_default_value;
  int error_num, roop_count, roop_count2;
  DBUG_ENTER("spider_set_connect_info_default");
  for (roop_count = 0; roop_count < (int) share->all_link_count; roop_count++)
  {
    if (share->server_names[roop_count])
    {
      if ((error_num = spider_get_server(share, roop_count)))
        DBUG_RETURN(error_num);
    }

    if (
      !share->tgt_sockets[roop_count] &&
      (
        !share->tgt_hosts[roop_count] ||
        !strcmp(share->tgt_hosts[roop_count], my_localhost)
      )
    ) {
      check_socket = TRUE;
    } else {
      check_socket = FALSE;
    }
    if (!share->tgt_dbs[roop_count] && table_share)
    {
      check_database = TRUE;
    } else {
      check_database = FALSE;
    }
    if (check_socket || check_database)
    {
      socket_has_default_value = check_socket;
      database_has_default_value = check_database;
      if (share->tgt_wrappers[roop_count])
      {
        for (roop_count2 = 0; roop_count2 < SPIDER_DBTON_SIZE; roop_count2++)
        {
          DBUG_PRINT("info",("spider share->tgt_wrappers[%d]=%s", roop_count,
            share->tgt_wrappers[roop_count]));
          DBUG_PRINT("info",("spider spider_dbton[%d].wrapper=%s", roop_count2,
            spider_dbton[roop_count2].wrapper ?
              spider_dbton[roop_count2].wrapper : "NULL"));
          if (
            spider_dbton[roop_count2].wrapper &&
            !strcmp(share->tgt_wrappers[roop_count],
              spider_dbton[roop_count2].wrapper)
          ) {
            if (spider_dbton[roop_count2].db_access_type ==
              SPIDER_DB_ACCESS_TYPE_SQL)
            {
              if (check_socket)
              {
                socket_has_default_value = spider_dbton[roop_count2].
                  db_util->socket_has_default_value();
              }
              if (check_database)
              {
                database_has_default_value = spider_dbton[roop_count2].
                  db_util->database_has_default_value();
              }
              break;
            }
          }
        }
      }
    } else {
      socket_has_default_value = FALSE;
      database_has_default_value = FALSE;
    }

    if (!share->tgt_wrappers[roop_count])
    {
      DBUG_PRINT("info",("spider create default tgt_wrappers"));
      share->tgt_wrappers_lengths[roop_count] = SPIDER_DB_WRAPPER_LEN;
      if (
        !(share->tgt_wrappers[roop_count] = spider_create_string(
          SPIDER_DB_WRAPPER_STR,
          share->tgt_wrappers_lengths[roop_count]))
      ) {
        DBUG_RETURN(HA_ERR_OUT_OF_MEM);
      }
    }

    if (!share->tgt_hosts[roop_count])
    {
      DBUG_PRINT("info",("spider create default tgt_hosts"));
      share->tgt_hosts_lengths[roop_count] = strlen(my_localhost);
      if (
        !(share->tgt_hosts[roop_count] = spider_create_string(
          my_localhost,
          share->tgt_hosts_lengths[roop_count]))
      ) {
        DBUG_RETURN(HA_ERR_OUT_OF_MEM);
      }
    }

    if (database_has_default_value)
    {
      DBUG_PRINT("info",("spider create default tgt_dbs"));
      share->tgt_dbs_lengths[roop_count] = table_share->db.length;
      if (
        !(share->tgt_dbs[roop_count] = spider_create_string(
          table_share->db.str,
          table_share->db.length))
      ) {
        DBUG_RETURN(HA_ERR_OUT_OF_MEM);
      }
    }

    if (!share->tgt_table_names[roop_count] && table_share)
    {
      DBUG_PRINT("info",("spider create default tgt_table_names"));
      share->tgt_table_names_lengths[roop_count] =
        table_share->table_name.length;
      if (
        !(share->tgt_table_names[roop_count] = spider_create_table_name_string(
          table_share->table_name.str,
#ifdef WITH_PARTITION_STORAGE_ENGINE
          (part_elem ? part_elem->partition_name : NULL),
          (sub_elem ? sub_elem->partition_name : NULL)
#else
          NULL,
          NULL
#endif
        ))
      ) {
        DBUG_RETURN(HA_ERR_OUT_OF_MEM);
      }
    }

    if (
      !share->tgt_default_files[roop_count] &&
      share->tgt_default_groups[roop_count] &&
      (*spd_defaults_file || *spd_defaults_extra_file)
    ) {
      DBUG_PRINT("info",("spider create default tgt_default_files"));
      if (*spd_defaults_extra_file)
      {
        share->tgt_default_files_lengths[roop_count] =
          strlen(*spd_defaults_extra_file);
        if (
          !(share->tgt_default_files[roop_count] = spider_create_string(
            *spd_defaults_extra_file,
            share->tgt_default_files_lengths[roop_count]))
        ) {
          my_error(ER_OUT_OF_RESOURCES, MYF(0), HA_ERR_OUT_OF_MEM);
          DBUG_RETURN(HA_ERR_OUT_OF_MEM);
        }
      } else {
        share->tgt_default_files_lengths[roop_count] =
          strlen(*spd_defaults_file);
        if (
          !(share->tgt_default_files[roop_count] = spider_create_string(
            *spd_defaults_file,
            share->tgt_default_files_lengths[roop_count]))
        ) {
          my_error(ER_OUT_OF_RESOURCES, MYF(0), HA_ERR_OUT_OF_MEM);
          DBUG_RETURN(HA_ERR_OUT_OF_MEM);
        }
      }
    }

    if (!share->tgt_pk_names[roop_count])
    {
      DBUG_PRINT("info",("spider create default tgt_pk_names"));
      share->tgt_pk_names_lengths[roop_count] = SPIDER_DB_PK_NAME_LEN;
      if (
        !(share->tgt_pk_names[roop_count] = spider_create_string(
          SPIDER_DB_PK_NAME_STR,
          share->tgt_pk_names_lengths[roop_count]))
      ) {
        DBUG_RETURN(HA_ERR_OUT_OF_MEM);
      }
    }

    if (!share->tgt_sequence_names[roop_count])
    {
      DBUG_PRINT("info",("spider create default tgt_sequence_names"));
      share->tgt_sequence_names_lengths[roop_count] =
        SPIDER_DB_SEQUENCE_NAME_LEN;
      if (
        !(share->tgt_sequence_names[roop_count] = spider_create_string(
          SPIDER_DB_SEQUENCE_NAME_STR,
          share->tgt_sequence_names_lengths[roop_count]))
      ) {
        DBUG_RETURN(HA_ERR_OUT_OF_MEM);
      }
    }

    if (share->tgt_ports[roop_count] == -1)
    {
      share->tgt_ports[roop_count] = MYSQL_PORT;
    } else if (share->tgt_ports[roop_count] < 0)
    {
      share->tgt_ports[roop_count] = 0;
    } else if (share->tgt_ports[roop_count] > 65535)
    {
      share->tgt_ports[roop_count] = 65535;
    }

    if (share->tgt_ssl_vscs[roop_count] == -1)
      share->tgt_ssl_vscs[roop_count] = 0;

    if (socket_has_default_value)
    {
      DBUG_PRINT("info",("spider create default tgt_sockets"));
      share->tgt_sockets_lengths[roop_count] =
        strlen((char *) MYSQL_UNIX_ADDR);
      if (
        !(share->tgt_sockets[roop_count] = spider_create_string(
          (char *) MYSQL_UNIX_ADDR,
          share->tgt_sockets_lengths[roop_count]))
      ) {
        DBUG_RETURN(HA_ERR_OUT_OF_MEM);
      }
    }

    if (share->link_statuses[roop_count] == -1)
      share->link_statuses[roop_count] = SPIDER_LINK_STATUS_NO_CHANGE;

#ifndef WITHOUT_SPIDER_BG_SEARCH
    if (share->monitoring_bg_flag[roop_count] == -1)
      share->monitoring_bg_flag[roop_count] = 0;
    if (share->monitoring_bg_kind[roop_count] == -1)
      share->monitoring_bg_kind[roop_count] = 0;
#endif
    if (share->monitoring_binlog_pos_at_failing[roop_count] == -1)
      share->monitoring_binlog_pos_at_failing[roop_count] = 0;
    if (share->monitoring_flag[roop_count] == -1)
      share->monitoring_flag[roop_count] = 0;
    if (share->monitoring_kind[roop_count] == -1)
      share->monitoring_kind[roop_count] = 0;
#ifndef WITHOUT_SPIDER_BG_SEARCH
    if (share->monitoring_bg_interval[roop_count] == -1)
      share->monitoring_bg_interval[roop_count] = 10000000;
#endif
    if (share->monitoring_limit[roop_count] == -1)
      share->monitoring_limit[roop_count] = 1;
    if (share->monitoring_sid[roop_count] == -1)
      share->monitoring_sid[roop_count] = global_system_variables.server_id;

    if (share->access_balances[roop_count] == -1)
      share->access_balances[roop_count] = 100;
  }

  if (share->query_cache == -1)
    share->query_cache = 0;
  if (share->query_cache_sync == -1)
    share->query_cache_sync = 0;
  if (share->scan_rate == -1)
    share->scan_rate = 1;
  if (share->read_rate == -1)
    share->read_rate = 0.0002;
  if (share->priority == -1)
    share->priority = 1000000;
  if (share->table_count_mode == -1)
    share->table_count_mode = 0;
  if (share->active_link_count == -1)
    share->active_link_count = share->all_link_count;
#ifdef HA_CAN_FORCE_BULK_UPDATE
  if (share->force_bulk_update == -1)
    share->force_bulk_update = 0;
#endif
#ifdef HA_CAN_FORCE_BULK_DELETE
  if (share->force_bulk_delete == -1)
    share->force_bulk_delete = 0;
#endif
  if (!share->bka_engine)
  {
    DBUG_PRINT("info",("spider create default bka_engine"));
    share->bka_engine_length = SPIDER_SQL_TMP_BKA_ENGINE_LEN;
    if (
      !(share->bka_engine = spider_create_string(
        SPIDER_SQL_TMP_BKA_ENGINE_STR,
        SPIDER_SQL_TMP_BKA_ENGINE_LEN))
    ) {
      DBUG_RETURN(HA_ERR_OUT_OF_MEM);
    }
  }
  DBUG_RETURN(0);
}

/*
  This function is a no-op if all share->tgt_dbs and
  share->tgt_table_names are non-null, otherwise it may assign them
  with db_name and table_name
*/
int spider_set_connect_info_default_db_table(
  SPIDER_SHARE *share,
  const char *db_name,
  uint db_name_length,
  const char *table_name,
  uint table_name_length
) {
  uint roop_count, roop_count2;
  bool check_database;
  bool database_has_default_value;
  DBUG_ENTER("spider_set_connect_info_default_db_table");
  for (roop_count = 0; roop_count < share->link_count; roop_count++)
  {
    if (!share->tgt_dbs[roop_count] && db_name)
    {
      check_database = TRUE;
    } else {
      check_database = FALSE;
    }
    if (check_database)
    {
      database_has_default_value = check_database;
      if (share->tgt_wrappers[roop_count])
      {
        for (roop_count2 = 0; roop_count2 < SPIDER_DBTON_SIZE; roop_count2++)
        {
          DBUG_PRINT("info",("spider share->tgt_wrappers[%d]=%s", roop_count,
            share->tgt_wrappers[roop_count]));
          DBUG_PRINT("info",("spider spider_dbton[%d].wrapper=%s", roop_count2,
            spider_dbton[roop_count2].wrapper ?
              spider_dbton[roop_count2].wrapper : "NULL"));
          if (
            spider_dbton[roop_count2].wrapper &&
            !strcmp(share->tgt_wrappers[roop_count],
              spider_dbton[roop_count2].wrapper)
          ) {
            if (spider_dbton[roop_count2].db_access_type ==
              SPIDER_DB_ACCESS_TYPE_SQL)
            {
              if (check_database)
              {
                database_has_default_value = spider_dbton[roop_count2].
                  db_util->database_has_default_value();
              }
              break;
            }
          }
        }
      }
    } else {
      database_has_default_value = FALSE;
    }

    if (database_has_default_value)
    {
      DBUG_PRINT("info",("spider create default tgt_dbs"));
      share->tgt_dbs_lengths[roop_count] = db_name_length;
      if (
        !(share->tgt_dbs[roop_count] = spider_create_string(
          db_name,
          db_name_length))
      ) {
        DBUG_RETURN(HA_ERR_OUT_OF_MEM);
      }
    }

    if (!share->tgt_table_names[roop_count] && table_name)
    {
      const char *tmp_ptr;
      DBUG_PRINT("info",("spider create default tgt_table_names"));
      if ((tmp_ptr = strstr(table_name, "#P#")))
        table_name_length = (uint) PTR_BYTE_DIFF(tmp_ptr, table_name);
      share->tgt_table_names_lengths[roop_count] = table_name_length;
      if (
        !(share->tgt_table_names[roop_count] = spider_create_string(
          table_name,
          table_name_length))
      ) {
        DBUG_RETURN(HA_ERR_OUT_OF_MEM);
      }
    }
  }
  DBUG_RETURN(0);
}

/*
  Parse `dbtable_name' into db name and table name, and call
  spider_set_connect_info_default_db_table() to set the db/table name
  values of `share' if needed
*/
int spider_set_connect_info_default_dbtable(
  SPIDER_SHARE *share,
  const char *dbtable_name,
  int dbtable_name_length
) {
  const char *ptr_db, *ptr_table;
  my_ptrdiff_t ptr_diff_db, ptr_diff_table;
  DBUG_ENTER("spider_set_connect_info_default_dbtable");
  ptr_db = strchr(dbtable_name, FN_LIBCHAR);
  ptr_db++;
  ptr_diff_db = PTR_BYTE_DIFF(ptr_db, dbtable_name);
  DBUG_PRINT("info",("spider ptr_diff_db = %lld", (longlong) ptr_diff_db));
  ptr_table = strchr(ptr_db, FN_LIBCHAR);
  ptr_table++;
  ptr_diff_table = PTR_BYTE_DIFF(ptr_table, ptr_db);
  DBUG_PRINT("info",("spider ptr_diff_table = %lld", (longlong) ptr_diff_table));
  DBUG_RETURN(spider_set_connect_info_default_db_table(
    share,
    ptr_db,
    (uint)(ptr_diff_table - 1),
    ptr_table,
    (uint)(dbtable_name_length - ptr_diff_db - ptr_diff_table)
  ));
}

#ifdef DBUG_TRACE
void spider_print_keys(
  const char *key,
  uint length
) {
  const char *end_ptr;
  uint roop_count = 1;
  DBUG_ENTER("spider_print_keys");
  DBUG_PRINT("info",("spider key_length=%u", length));
  end_ptr = key + length;
  while (key < end_ptr)
  {
    DBUG_PRINT("info",("spider key[%u]=%s", roop_count, key));
    key = strchr(key, '\0') + 1;
    roop_count++;
  }
  DBUG_VOID_RETURN;
}
#endif

void spider_create_conn_key_add_one(int* counter, char** target, char* src)
{
  (*counter)++;
  if (src)
  {
    **target= (char) *counter;
    *target= strmov(*target + 1, src);
    (*target)++;
  }
}

/*
  The conn keys are strings of the following format:

  0 \<idx1> <value1> \0 \<idx2> <value2> \0 ... \<idxN> <valueN> \0

  Where idx1, idx2, etc. are the index of first, second, etc. options
  where the value is specified. We have the wrapper as the first
  option, host as the second, port as the third, socket as the fourth,
  and so on (see below for the order of all options). So here would be
  a conn key where only the host and the port are specified and
  nothing else:

  0\002localhost\000\00303306\000

  And it has length 1 + 1 + 9 + 1 + 1 + 5 + 1 = 19.

  In case of HA, say we have another link with the same options
  specified except that the port is 3307, then we place an extra NUL
  before placing the next conn_key:

  0\002localhost\000\00303306\000\0000\002localhost\000\00303307\000
  ^                                  ^
  conn_keys[0]                       conn_keys[1]

  Thus the total number of chars (share->conn_keys_charlen) needed is
  (19 + 1) * 2 = 40
*/
int spider_create_conn_keys(
  SPIDER_SHARE *share
) {
  int roop_count, roop_count2;
  char *tmp_name, port_str[6];
  uint length_base = sizeof(uint) * share->all_link_count;
  uint *conn_keys_lengths;
  uint *sql_dbton_ids;
  DBUG_ENTER("spider_create_conn_keys");
  char *ptr;
  uint length = length_base * 2;
  ptr = (char *) my_alloca(length);
  if (!ptr)
  {
    DBUG_RETURN(HA_ERR_OUT_OF_MEM);
  }
  conn_keys_lengths = (uint *) ptr;
  ptr += length_base;
  sql_dbton_ids = (uint *) ptr;

  share->conn_keys_charlen = 0;
  for (roop_count = 0; roop_count < (int) share->all_link_count; roop_count++)
  {
    bool get_sql_id = FALSE;
    for (roop_count2 = 0; roop_count2 < SPIDER_DBTON_SIZE; roop_count2++)
    {
      DBUG_PRINT("info",("spider share->tgt_wrappers[%d]=%s", roop_count,
        share->tgt_wrappers[roop_count]));
      DBUG_PRINT("info",("spider spider_dbton[%d].wrapper=%s", roop_count2,
        spider_dbton[roop_count2].wrapper ?
          spider_dbton[roop_count2].wrapper : "NULL"));
      if (
        spider_dbton[roop_count2].wrapper &&
        !strcasecmp(share->tgt_wrappers[roop_count],
          spider_dbton[roop_count2].wrapper)
      ) {
        spider_set_bit(share->dbton_bitmap, roop_count2);
        if (
          !get_sql_id &&
          spider_dbton[roop_count2].db_access_type == SPIDER_DB_ACCESS_TYPE_SQL
        ) {
          sql_dbton_ids[roop_count] = roop_count2;
          get_sql_id = TRUE;
            break;
        }
      }
    }
    if (!get_sql_id)
      sql_dbton_ids[roop_count] = SPIDER_DBTON_SIZE;

    bool tables_on_different_db_are_joinable;
    if (get_sql_id)
    {
      tables_on_different_db_are_joinable =
        spider_dbton[sql_dbton_ids[roop_count]].db_util->
          tables_on_different_db_are_joinable();
    } else {
      tables_on_different_db_are_joinable = TRUE;
    }
    conn_keys_lengths[roop_count]
      = 1
      + (share->tgt_wrappers[roop_count] ? share->tgt_wrappers_lengths[roop_count] + 2 : 0)
      + (share->tgt_hosts[roop_count] ? share->tgt_hosts_lengths[roop_count] + 2 : 0)
      + 5 + 2
      + (share->tgt_sockets[roop_count] ? share->tgt_sockets_lengths[roop_count] + 2 : 0)
      + (!tables_on_different_db_are_joinable && share->tgt_dbs[roop_count] ?
         share->tgt_dbs_lengths[roop_count] + 2 : 0)
      + (share->tgt_usernames[roop_count] ? share->tgt_usernames_lengths[roop_count] + 2 : 0)
      + (share->tgt_passwords[roop_count] ? share->tgt_passwords_lengths[roop_count] + 2 : 0)
      + (share->tgt_ssl_cas[roop_count] ? share->tgt_ssl_cas_lengths[roop_count] + 2 : 0)
      + (share->tgt_ssl_capaths[roop_count] ? share->tgt_ssl_capaths_lengths[roop_count] + 2 : 0)
      + (share->tgt_ssl_certs[roop_count] ? share->tgt_ssl_certs_lengths[roop_count] + 2 : 0)
      + (share->tgt_ssl_ciphers[roop_count] ? share->tgt_ssl_ciphers_lengths[roop_count] + 2 : 0)
      + (share->tgt_ssl_keys[roop_count] ? share->tgt_ssl_keys_lengths[roop_count] + 2 : 0)
      + 1 + 2
      + (share->tgt_default_files[roop_count] ? share->tgt_default_files_lengths[roop_count] + 2 : 0)
      + (share->tgt_default_groups[roop_count] ? share->tgt_default_groups_lengths[roop_count] + 2 : 0)
      + (share->tgt_dsns[roop_count] ? share->tgt_dsns_lengths[roop_count] + 2 : 0);
    share->conn_keys_charlen += conn_keys_lengths[roop_count] + 1;
  }
  if (!(share->conn_keys = (char **)
    spider_bulk_alloc_mem(spider_current_trx, SPD_MID_CREATE_CONN_KEYS_1,
      __func__, __FILE__, __LINE__, MYF(MY_WME | MY_ZEROFILL),
      &share->conn_keys, sizeof(char *) * share->all_link_count,
      &share->conn_keys_lengths, length_base,
#ifdef SPIDER_HAS_HASH_VALUE_TYPE
      &share->conn_keys_hash_value,
        sizeof(my_hash_value_type) * share->all_link_count,
#endif
      &tmp_name, sizeof(char) * share->conn_keys_charlen,
      &share->sql_dbton_ids, length_base,
      NullS))
  ) {
    my_afree(conn_keys_lengths);
    DBUG_RETURN(HA_ERR_OUT_OF_MEM);
  }
  share->conn_keys_length = share->all_link_count;
  memcpy(share->conn_keys_lengths, conn_keys_lengths,
    length_base);
  memcpy(share->sql_dbton_ids, sql_dbton_ids, length_base);

  my_afree(conn_keys_lengths);

  for (roop_count = 0; roop_count < (int) share->all_link_count; roop_count++)
  {
    bool tables_on_different_db_are_joinable;
    if (share->sql_dbton_ids[roop_count] != SPIDER_DBTON_SIZE)
    {
      tables_on_different_db_are_joinable =
        spider_dbton[share->sql_dbton_ids[roop_count]].db_util->
          tables_on_different_db_are_joinable();
    } else {
      tables_on_different_db_are_joinable = TRUE;
    }

    share->conn_keys[roop_count] = tmp_name;
    *tmp_name = '0';
    tmp_name++;
    int counter= 0;
    spider_create_conn_key_add_one(&counter, &tmp_name, share->tgt_wrappers[roop_count]);
    spider_create_conn_key_add_one(&counter, &tmp_name, share->tgt_hosts[roop_count]);
    my_sprintf(port_str, (port_str, "%05ld", share->tgt_ports[roop_count]));
    spider_create_conn_key_add_one(&counter, &tmp_name, port_str);
    spider_create_conn_key_add_one(&counter, &tmp_name, share->tgt_sockets[roop_count]);
    counter++;
    if (!tables_on_different_db_are_joinable && share->tgt_dbs[roop_count])
    {
      *tmp_name= (char) counter;
      tmp_name = strmov(tmp_name + 1, share->tgt_dbs[roop_count]);
      tmp_name++;
    }
    spider_create_conn_key_add_one(&counter, &tmp_name, share->tgt_usernames[roop_count]);
    spider_create_conn_key_add_one(&counter, &tmp_name, share->tgt_passwords[roop_count]);
    spider_create_conn_key_add_one(&counter, &tmp_name, share->tgt_ssl_cas[roop_count]);
    spider_create_conn_key_add_one(&counter, &tmp_name, share->tgt_ssl_capaths[roop_count]);
    spider_create_conn_key_add_one(&counter, &tmp_name, share->tgt_ssl_certs[roop_count]);
    spider_create_conn_key_add_one(&counter, &tmp_name, share->tgt_ssl_ciphers[roop_count]);
    spider_create_conn_key_add_one(&counter, &tmp_name, share->tgt_ssl_keys[roop_count]);
    counter++;
    *tmp_name= (char) counter;
    tmp_name++;
    *tmp_name = '0' + ((char) share->tgt_ssl_vscs[roop_count]);
    tmp_name++;
    spider_create_conn_key_add_one(&counter, &tmp_name, share->tgt_default_files[roop_count]);
    spider_create_conn_key_add_one(&counter, &tmp_name, share->tgt_default_groups[roop_count]);
    spider_create_conn_key_add_one(&counter, &tmp_name, share->tgt_dsns[roop_count]);
    tmp_name++;
    tmp_name++;
#ifdef SPIDER_HAS_HASH_VALUE_TYPE
    share->conn_keys_hash_value[roop_count] = my_calc_hash(
      &spider_open_connections, (uchar*) share->conn_keys[roop_count],
      share->conn_keys_lengths[roop_count]);
#endif
  }
  for (roop_count2 = 0; roop_count2 < SPIDER_DBTON_SIZE; roop_count2++)
  {
    if (spider_bit_is_set(share->dbton_bitmap, roop_count2))
    {
        share->use_sql_dbton_ids[share->use_dbton_count] = roop_count2;
        share->sql_dbton_id_to_seq[roop_count2] = share->use_dbton_count;
        share->use_sql_dbton_count++;
      share->use_dbton_ids[share->use_dbton_count] = roop_count2;
      share->dbton_id_to_seq[roop_count2] = share->use_dbton_count;
      share->use_dbton_count++;
    }
  }
  DBUG_RETURN(0);
}

SPIDER_SHARE *spider_create_share(
  const char *table_name,
  TABLE_SHARE *table_share,
#ifdef WITH_PARTITION_STORAGE_ENGINE
  partition_info *part_info,
#endif
#ifdef SPIDER_HAS_HASH_VALUE_TYPE
  my_hash_value_type hash_value,
#endif
  int *error_num
) {
  int bitmap_size, roop_count;
  uint length;
  int use_table_charset;
  SPIDER_SHARE *share;
  char *tmp_name;
  longlong *tmp_cardinality, *tmp_static_key_cardinality;
  uchar *tmp_cardinality_upd, *tmp_table_mon_mutex_bitmap;
  char buf[MAX_FIELD_WIDTH], *buf_pos;
  char link_idx_str[SPIDER_SQL_INT_LEN];
#ifdef HA_HAS_CHECKSUM_EXTENDED
  bool checksum_support = TRUE;
#endif
  DBUG_ENTER("spider_create_share");
  length = (uint) strlen(table_name);
  bitmap_size = spider_bitmap_size(table_share->fields);
  if (!(share = (SPIDER_SHARE *)
    spider_bulk_malloc(spider_current_trx, SPD_MID_CREATE_SHARE_1, MYF(MY_WME | MY_ZEROFILL),
      &share, (uint) (sizeof(*share)),
      &tmp_name, (uint) (length + 1),
      &tmp_static_key_cardinality,
        (uint) (sizeof(*tmp_static_key_cardinality) * table_share->keys),
      &tmp_cardinality,
        (uint) (sizeof(*tmp_cardinality) * table_share->fields),
      &tmp_cardinality_upd,
        (uint) (sizeof(*tmp_cardinality_upd) * bitmap_size),
      &tmp_table_mon_mutex_bitmap,
        (uint) (sizeof(*tmp_table_mon_mutex_bitmap) *
          ((spider_param_udf_table_mon_mutex_count() + 7) / 8)),
      NullS))
  ) {
    *error_num = HA_ERR_OUT_OF_MEM;
    goto error_alloc_share;
  }

  SPD_INIT_ALLOC_ROOT(&share->mem_root, 4096, 0, MYF(MY_WME));
  share->use_count = 0;
  share->use_dbton_count = 0;
  share->table_name_length = length;
  share->table_name = tmp_name;
  strmov(share->table_name, table_name);
  share->static_key_cardinality = tmp_static_key_cardinality;
  share->cardinality = tmp_cardinality;
  share->cardinality_upd = tmp_cardinality_upd;
  share->table_mon_mutex_bitmap = tmp_table_mon_mutex_bitmap;
  share->bitmap_size = bitmap_size;
  share->table_share = table_share;
#ifdef SPIDER_HAS_HASH_VALUE_TYPE
  share->table_name_hash_value = hash_value;
#ifdef WITH_PARTITION_STORAGE_ENGINE
  share->table_path_hash_value = my_calc_hash(&spider_open_tables,
    (uchar*) table_share->path.str, table_share->path.length);
#endif
#endif
#ifndef WITHOUT_SPIDER_BG_SEARCH
  share->table.s = table_share;
  share->table.field = table_share->field;
  share->table.key_info = table_share->key_info;
  share->table.read_set = &table_share->all_set;
#endif

  if (table_share->keys > 0)
    if (!(share->key_hint = new spider_string[table_share->keys]))
    {
      *error_num = HA_ERR_OUT_OF_MEM;
      goto error_init_hint_string;
    }
  for (roop_count = 0; roop_count < (int) table_share->keys; roop_count++)
    share->key_hint[roop_count].init_calc_mem(SPD_MID_CREATE_SHARE_2);
  DBUG_PRINT("info",("spider share->key_hint=%p", share->key_hint));

  if ((*error_num = spider_parse_connect_info(share, table_share,
#ifdef WITH_PARTITION_STORAGE_ENGINE
    part_info,
#endif
    0)))
    goto error_parse_connect_string;

  for (roop_count = 0; roop_count < (int) share->all_link_count;
    roop_count++)
  {
    my_sprintf(link_idx_str, (link_idx_str, "%010d", roop_count));
    buf_pos = strmov(buf, share->table_name);
    buf_pos = strmov(buf_pos, link_idx_str);
    *buf_pos = '\0';
    spider_set_bit(tmp_table_mon_mutex_bitmap,
      spider_udf_calc_hash(buf, spider_param_udf_table_mon_mutex_count())
    );
  }

  use_table_charset = spider_param_use_table_charset(
    share->use_table_charset);
  if (table_share->table_charset && use_table_charset)
    share->access_charset = table_share->table_charset;
  else
    share->access_charset = system_charset_info;

  if ((*error_num = spider_create_conn_keys(share)))
    goto error_create_conn_keys;

  if (share->table_count_mode & 1)
    share->additional_table_flags |= HA_STATS_RECORDS_IS_EXACT;
  if (share->table_count_mode & 2)
    share->additional_table_flags |= HA_HAS_RECORDS;

  if (mysql_mutex_init(spd_key_mutex_share,
    &share->mutex, MY_MUTEX_INIT_FAST))
  {
    *error_num = HA_ERR_OUT_OF_MEM;
    goto error_init_mutex;
  }

  if (mysql_mutex_init(spd_key_mutex_share_sts,
    &share->sts_mutex, MY_MUTEX_INIT_FAST))
  {
    *error_num = HA_ERR_OUT_OF_MEM;
    goto error_init_sts_mutex;
  }

  if (mysql_mutex_init(spd_key_mutex_share_crd,
    &share->crd_mutex, MY_MUTEX_INIT_FAST))
  {
    *error_num = HA_ERR_OUT_OF_MEM;
    goto error_init_crd_mutex;
  }

#ifdef SPIDER_HAS_HASH_VALUE_TYPE
  if (!(share->lgtm_tblhnd_share =
    spider_get_lgtm_tblhnd_share(tmp_name, length, hash_value, FALSE, TRUE,
    error_num)))
#else
  if (!(share->lgtm_tblhnd_share =
    spider_get_lgtm_tblhnd_share(tmp_name, length, FALSE, TRUE, error_num)))
#endif
  {
    goto error_get_lgtm_tblhnd_share;
  }

  if (!(share->wide_share =
    spider_get_wide_share(share, table_share, error_num)))
    goto error_get_wide_share;

  for (roop_count = 0; roop_count < SPIDER_DBTON_SIZE; roop_count++)
  {
    if (spider_bit_is_set(share->dbton_bitmap, roop_count))
    {
      if (!(share->dbton_share[roop_count] =
        spider_dbton[roop_count].create_db_share(share)))
      {
        *error_num = HA_ERR_OUT_OF_MEM;
        goto error_init_dbton;
      }
      if ((*error_num = share->dbton_share[roop_count]->init()))
      {
        goto error_init_dbton;
      }
#ifdef HA_HAS_CHECKSUM_EXTENDED
      if (
        spider_dbton[roop_count].db_access_type == SPIDER_DB_ACCESS_TYPE_SQL &&
        !share->dbton_share[roop_count]->checksum_support()
      ) {
        checksum_support = FALSE;
      }
#endif
    }
  }
#ifdef HA_HAS_CHECKSUM_EXTENDED
  if (checksum_support)
  {
    share->additional_table_flags |=
      HA_HAS_OLD_CHECKSUM |
      HA_HAS_NEW_CHECKSUM;
  }
#endif
  DBUG_RETURN(share);

/*
  roop_count = SPIDER_DBTON_SIZE - 1;
*/
error_init_dbton:
  for (; roop_count >= 0; roop_count--)
  {
    if (share->dbton_share[roop_count])
    {
      delete share->dbton_share[roop_count];
      share->dbton_share[roop_count] = NULL;
    }
  }
  spider_free_wide_share(share->wide_share);
error_get_wide_share:
error_get_lgtm_tblhnd_share:
  pthread_mutex_destroy(&share->crd_mutex);
error_init_crd_mutex:
  pthread_mutex_destroy(&share->sts_mutex);
error_init_sts_mutex:
  pthread_mutex_destroy(&share->mutex);
error_init_mutex:
error_create_conn_keys:
error_parse_connect_string:
error_init_hint_string:
  spider_free_share_alloc(share);
  spider_free(spider_current_trx, share, MYF(0));
error_alloc_share:
  DBUG_RETURN(NULL);
}

SPIDER_SHARE *spider_get_share(
  const char *table_name,
  TABLE *table,
  THD *thd,
  ha_spider *spider,
  int *error_num
) {
  SPIDER_SHARE *share;
  TABLE_SHARE *table_share = table->s;
  SPIDER_RESULT_LIST *result_list = &spider->result_list;
  uint length, tmp_conn_link_idx = 0, buf_sz;
  char *tmp_name, *tmp_cid;
  int roop_count;
  double sts_interval;
  int sts_mode;
#ifdef WITH_PARTITION_STORAGE_ENGINE
  int sts_sync;
  int auto_increment_mode;
#endif
  double crd_interval;
  int crd_mode;
#ifdef WITH_PARTITION_STORAGE_ENGINE
  int crd_sync;
#endif
  char first_byte;
  int semi_table_lock_conn;
  int search_link_idx;
  uint sql_command = thd_sql_command(thd);
  SPIDER_Open_tables_backup open_tables_backup;
  MEM_ROOT mem_root;
  TABLE *table_tables = NULL;
  bool init_mem_root = FALSE;
  bool same_server_link;
  int load_sts_at_startup;
  int load_crd_at_startup;
  user_var_entry *loop_check;
  char *loop_check_buf;
  TABLE_SHARE *top_share;
  LEX_CSTRING lex_str;
  DBUG_ENTER("spider_get_share");
  top_share = spider->wide_handler->top_share;
  length = (uint) strlen(table_name);
#ifdef SPIDER_HAS_HASH_VALUE_TYPE
  my_hash_value_type hash_value = my_calc_hash(&spider_open_tables,
    (uchar*) table_name, length);
#endif
  if (top_share)
  {
    lex_str.length = top_share->path.length + SPIDER_SQL_LOP_CHK_PRM_PRF_LEN;
    buf_sz = spider_unique_id.length > SPIDER_SQL_LOP_CHK_PRM_PRF_LEN ?
      top_share->path.length + spider_unique_id.length + 2 :
      lex_str.length + 2;
    loop_check_buf = (char *) my_alloca(buf_sz);
    if (unlikely(!loop_check_buf))
    {
      *error_num = HA_ERR_OUT_OF_MEM;
      DBUG_RETURN(NULL);
    }
    lex_str.str = loop_check_buf + buf_sz - lex_str.length - 2;
    memcpy((void *) lex_str.str,
      SPIDER_SQL_LOP_CHK_PRM_PRF_STR, SPIDER_SQL_LOP_CHK_PRM_PRF_LEN);
    memcpy((void *) (lex_str.str + SPIDER_SQL_LOP_CHK_PRM_PRF_LEN),
      top_share->path.str, top_share->path.length);
    ((char *) lex_str.str)[lex_str.length] = '\0';
    DBUG_PRINT("info",("spider loop check param name=%s", lex_str.str));
    loop_check = get_variable(&thd->user_vars, &lex_str, FALSE);
    if (loop_check && loop_check->type_handler()->result_type() == STRING_RESULT)
    {
      lex_str.length = top_share->path.length + spider_unique_id.length + 1;
      lex_str.str = loop_check_buf + buf_sz - top_share->path.length -
        spider_unique_id.length - 2;
      memcpy((void *) lex_str.str, spider_unique_id.str,
        spider_unique_id.length);
      ((char *) lex_str.str)[lex_str.length - 1] = '-';
      ((char *) lex_str.str)[lex_str.length] = '\0';
      DBUG_PRINT("info",("spider loop check key=%s", lex_str.str));
      DBUG_PRINT("info",("spider loop check param value=%s",
        loop_check->value));
      if (unlikely(strstr(loop_check->value, lex_str.str)))
      {
        *error_num = ER_SPIDER_INFINITE_LOOP_NUM;
        my_printf_error(*error_num, ER_SPIDER_INFINITE_LOOP_STR, MYF(0),
          top_share->db.str, top_share->table_name.str);
        my_afree(loop_check_buf);
        DBUG_RETURN(NULL);
      }
    }
    my_afree(loop_check_buf);
  }
  pthread_mutex_lock(&spider_tbl_mutex);
#ifdef SPIDER_HAS_HASH_VALUE_TYPE
  if (!(share = (SPIDER_SHARE*) my_hash_search_using_hash_value(
    &spider_open_tables, hash_value, (uchar*) table_name, length)))
#else
  if (!(share = (SPIDER_SHARE*) my_hash_search(&spider_open_tables,
    (uchar*) table_name, length)))
#endif
  {
    if (!(share = spider_create_share(
      table_name, table_share,
#ifdef WITH_PARTITION_STORAGE_ENGINE
      table->part_info,
#endif
#ifdef SPIDER_HAS_HASH_VALUE_TYPE
      hash_value,
#endif
      error_num
    ))) {
      goto error_alloc_share;
    }

    uint old_elements = spider_open_tables.array.max_element;
#ifdef HASH_UPDATE_WITH_HASH_VALUE
    if (my_hash_insert_with_hash_value(&spider_open_tables, hash_value,
      (uchar*) share))
#else
    if (my_hash_insert(&spider_open_tables, (uchar*) share))
#endif
    {
      *error_num = HA_ERR_OUT_OF_MEM;
      goto error_hash_insert;
    }
    if (spider_open_tables.array.max_element > old_elements)
    {
      spider_alloc_calc_mem(spider_current_trx,
        spider_open_tables,
        (spider_open_tables.array.max_element - old_elements) *
        spider_open_tables.array.size_of_element);
    }

    spider->share = share;
    spider->conn_link_idx = &tmp_conn_link_idx;

    share->use_count++;
    pthread_mutex_unlock(&spider_tbl_mutex);

    if (!share->link_status_init)
    {
      pthread_mutex_lock(&share->mutex);
      for (roop_count = 0;
        roop_count < (int) spider_param_udf_table_mon_mutex_count();
        roop_count++
      ) {
        if (spider_bit_is_set(share->table_mon_mutex_bitmap, roop_count))
          pthread_mutex_lock(&spider_udf_table_mon_mutexes[roop_count]);
      }
      if (!share->link_status_init)
      {
        /*
          The link statuses need to be refreshed from the spider_tables table
          if the operation:
          - Is not a DROP TABLE on a permanent table; or
          - Is an ALTER TABLE.

          Note that SHOW CREATE TABLE is not excluded, because the commands
          that follow it require up-to-date link statuses.
        */
        if ((table_share->tmp_table == NO_TMP_TABLE &&
             sql_command != SQLCOM_DROP_TABLE) ||
            /* for alter change link status */
            sql_command == SQLCOM_ALTER_TABLE)
        {
          SPD_INIT_ALLOC_ROOT(&mem_root, 4096, 0, MYF(MY_WME));
          init_mem_root = TRUE;

          if (
            !(table_tables = spider_open_sys_table(
              thd, SPIDER_SYS_TABLES_TABLE_NAME_STR,
              SPIDER_SYS_TABLES_TABLE_NAME_LEN, FALSE, &open_tables_backup,
              FALSE, error_num))
          ) {
            for (roop_count = 0;
              roop_count < (int) spider_param_udf_table_mon_mutex_count();
              roop_count++
            ) {
              if (spider_bit_is_set(share->table_mon_mutex_bitmap, roop_count))
                pthread_mutex_unlock(&spider_udf_table_mon_mutexes[roop_count]);
            }
            pthread_mutex_unlock(&share->mutex);
            share->init_error = TRUE;
            share->init_error_time = (time_t) time((time_t*) 0);
            share->init = TRUE;
            spider_free_share(share);
            goto error_open_sys_table;
          }
          *error_num = spider_get_link_statuses(table_tables, share,
            &mem_root);
          if (*error_num)
          {
            if (
              *error_num != HA_ERR_KEY_NOT_FOUND &&
              *error_num != HA_ERR_END_OF_FILE
            ) {
              for (roop_count = 0;
                roop_count < (int) spider_param_udf_table_mon_mutex_count();
                roop_count++
              ) {
                if (spider_bit_is_set(share->table_mon_mutex_bitmap, roop_count))
                  pthread_mutex_unlock(&spider_udf_table_mon_mutexes[roop_count]);
              }
              pthread_mutex_unlock(&share->mutex);
              share->init_error = TRUE;
              share->init_error_time = (time_t) time((time_t*) 0);
              share->init = TRUE;
              spider_free_share(share);
              spider_close_sys_table(thd, table_tables,
                &open_tables_backup, FALSE);
              table_tables = NULL;
              goto error_open_sys_table;
            }
          } else {
            memcpy(share->alter_table.tmp_link_statuses, share->link_statuses,
              sizeof(long) * share->all_link_count);
            share->link_status_init = TRUE;
          }
          spider_close_sys_table(thd, table_tables,
            &open_tables_backup, FALSE);
          table_tables = NULL;
        }
        share->have_recovery_link = spider_conn_check_recovery_link(share);
        if (init_mem_root)
        {
          free_root(&mem_root, MYF(0));
          init_mem_root = FALSE;
        }
      }
      for (roop_count = 0;
        roop_count < (int) spider_param_udf_table_mon_mutex_count();
        roop_count++
      ) {
        if (spider_bit_is_set(share->table_mon_mutex_bitmap, roop_count))
          pthread_mutex_unlock(&spider_udf_table_mon_mutexes[roop_count]);
      }
      pthread_mutex_unlock(&share->mutex);
    }

    semi_table_lock_conn = spider_param_semi_table_lock_connection(thd,
      share->semi_table_lock_conn);
    if (semi_table_lock_conn)
      first_byte = '0' +
        spider_param_semi_table_lock(thd, share->semi_table_lock);
    else
      first_byte = '0';

    if (!(spider->wide_handler->trx = spider_get_trx(thd, TRUE, error_num)))
    {
      share->init_error = TRUE;
      share->init_error_time = (time_t) time((time_t*) 0);
      share->init = TRUE;
      spider_free_share(share);
      goto error_but_no_delete;
    }
    spider->set_error_mode();

#ifndef WITHOUT_SPIDER_BG_SEARCH
    if (!share->sts_spider_init)
    {
      pthread_mutex_lock(&share->mutex);
      if (!share->sts_spider_init)
      {
        if ((*error_num = spider_create_spider_object_for_share(
          spider->wide_handler->trx, share, &share->sts_spider)))
        {
          pthread_mutex_unlock(&share->mutex);
          share->init_error = TRUE;
          share->init_error_time = (time_t) time((time_t*) 0);
          share->init = TRUE;
          spider_free_share(share);
          goto error_sts_spider_init;
        }
#ifdef HASH_UPDATE_WITH_HASH_VALUE
        share->sts_thread = &spider_table_sts_threads[
          hash_value % spider_param_table_sts_thread_count()];
#else
        share->sts_thread = &spider_table_sts_threads[
          my_calc_hash(&spider_open_tables, (uchar*) table_name, length) %
          spider_param_table_sts_thread_count()];
#endif
        share->sts_spider_init = TRUE;
      }
      pthread_mutex_unlock(&share->mutex);
    }

    if (!share->crd_spider_init)
    {
      pthread_mutex_lock(&share->mutex);
      if (!share->crd_spider_init)
      {
        if ((*error_num = spider_create_spider_object_for_share(
          spider->wide_handler->trx, share, &share->crd_spider)))
        {
          pthread_mutex_unlock(&share->mutex);
          share->init_error = TRUE;
          share->init_error_time = (time_t) time((time_t*) 0);
          share->init = TRUE;
          spider_free_share(share);
          goto error_crd_spider_init;
        }
#ifdef HASH_UPDATE_WITH_HASH_VALUE
        share->crd_thread = &spider_table_crd_threads[
          hash_value % spider_param_table_crd_thread_count()];
#else
        share->crd_thread = &spider_table_crd_threads[
          my_calc_hash(&spider_open_tables, (uchar*) table_name, length) %
          spider_param_table_crd_thread_count()];
#endif
        share->crd_spider_init = TRUE;
      }
      pthread_mutex_unlock(&share->mutex);
    }
#endif

#ifndef WITHOUT_SPIDER_BG_SEARCH
    if (
      sql_command != SQLCOM_DROP_TABLE &&
      sql_command != SQLCOM_ALTER_TABLE &&
      sql_command != SQLCOM_SHOW_CREATE &&
      (*error_num = spider_create_mon_threads(spider->wide_handler->trx,
        share))
    ) {
      share->init_error = TRUE;
      share->init_error_time = (time_t) time((time_t*) 0);
      share->init = TRUE;
      spider_free_share(share);
      goto error_but_no_delete;
    }
#endif

    if (!(spider->conn_keys = (char **)
      spider_bulk_alloc_mem(spider_current_trx, SPD_MID_GET_SHARE_1,
        __func__, __FILE__, __LINE__, MYF(MY_WME | MY_ZEROFILL),
        &spider->conn_keys, sizeof(char *) * share->link_count,
        &tmp_name, sizeof(char) * share->conn_keys_charlen,
        &spider->conns, sizeof(SPIDER_CONN *) * share->link_count,
        &spider->conn_link_idx, sizeof(uint) * share->link_count,
        &spider->conn_can_fo, sizeof(uchar) * share->link_bitmap_size,
        &spider->sql_kind, sizeof(uint) * share->link_count,
        &spider->connection_ids, sizeof(ulonglong) * share->link_count,
        &spider->conn_kind, sizeof(uint) * share->link_count,
        &spider->db_request_id, sizeof(ulonglong) * share->link_count,
        &spider->db_request_phase, sizeof(uchar) * share->link_bitmap_size,
        &spider->m_handler_opened, sizeof(uchar) * share->link_bitmap_size,
        &spider->m_handler_id, sizeof(uint) * share->link_count,
        &spider->m_handler_cid, sizeof(char *) * share->link_count,
        &tmp_cid, sizeof(char) * (SPIDER_SQL_HANDLER_CID_LEN + 1) *
          share->link_count,
        &spider->need_mons, sizeof(int) * share->link_count,
        &spider->quick_targets, sizeof(void *) * share->link_count,
        &result_list->upd_tmp_tbls, sizeof(TABLE *) * share->link_count,
        &result_list->upd_tmp_tbl_prms,
          sizeof(TMP_TABLE_PARAM) * share->link_count,
        &result_list->tmp_table_join_first,
          sizeof(uchar) * share->link_bitmap_size,
        &result_list->tmp_table_created,
          sizeof(uchar) * share->link_bitmap_size,
#ifdef HA_CAN_BULK_ACCESS
#endif
        &result_list->sql_kind_backup, sizeof(uint) * share->link_count,
        &result_list->casual_read, sizeof(int) * share->link_count,
        &spider->dbton_handler,
          sizeof(spider_db_handler *) * SPIDER_DBTON_SIZE,
        NullS))
    ) {
      share->init_error = TRUE;
      share->init_error_time = (time_t) time((time_t*) 0);
      share->init = TRUE;
      spider_free_share(share);
      goto error_but_no_delete;
    }
    memcpy(tmp_name, share->conn_keys[0], share->conn_keys_charlen);

    spider->conn_keys_first_ptr = tmp_name;
    for (roop_count = 0; roop_count < (int) share->link_count; roop_count++)
    {
      spider->conn_keys[roop_count] = tmp_name;
      *tmp_name = first_byte;
      tmp_name += share->conn_keys_lengths[roop_count] + 1;
      spider->m_handler_cid[roop_count] = tmp_cid;
      tmp_cid += SPIDER_SQL_HANDLER_CID_LEN + 1;
      result_list->upd_tmp_tbl_prms[roop_count].init();
      result_list->upd_tmp_tbl_prms[roop_count].field_count = 1;
      spider->conn_kind[roop_count] = SPIDER_CONN_KIND_MYSQL;
    }
    spider_trx_set_link_idx_for_all(spider);

    for (roop_count = 0; roop_count < (int) share->use_dbton_count;
      roop_count++)
    {
      uint dbton_id = share->use_dbton_ids[roop_count];
      if (!(spider->dbton_handler[dbton_id] =
        spider_dbton[dbton_id].create_db_handler(spider,
        share->dbton_share[dbton_id])))
      {
        *error_num = HA_ERR_OUT_OF_MEM;
        break;
      }
      if ((*error_num = spider->dbton_handler[dbton_id]->init()))
      {
        break;
      }
    }
    if (roop_count < (int) share->use_dbton_count)
    {
      for (; roop_count >= 0; roop_count--)
      {
        uint dbton_id = share->use_dbton_ids[roop_count];
        if (spider->dbton_handler[dbton_id])
        {
          delete spider->dbton_handler[dbton_id];
          spider->dbton_handler[dbton_id] = NULL;
        }
      }
      share->init_error = TRUE;
      share->init_error_time = (time_t) time((time_t*) 0);
      share->init = TRUE;
      goto error_after_alloc_conn_keys;
    }

    if (
      sql_command != SQLCOM_DROP_TABLE &&
      sql_command != SQLCOM_ALTER_TABLE &&
      sql_command != SQLCOM_SHOW_CREATE
    ) {
      for (
        roop_count = spider_conn_link_idx_next(share->link_statuses,
          spider->conn_link_idx, -1, share->link_count,
          SPIDER_LINK_STATUS_RECOVERY);
        roop_count < (int) share->link_count;
        roop_count = spider_conn_link_idx_next(share->link_statuses,
          spider->conn_link_idx, roop_count, share->link_count,
          SPIDER_LINK_STATUS_RECOVERY)
      ) {
        if (
          !(spider->conns[roop_count] =
            spider_get_conn(share, roop_count, spider->conn_keys[roop_count],
              spider->wide_handler->trx, spider, FALSE, TRUE,
              SPIDER_CONN_KIND_MYSQL,
              error_num))
        ) {
          if (
            share->monitoring_kind[roop_count] &&
            spider->need_mons[roop_count]
          ) {
            *error_num = spider_ping_table_mon_from_table(
                spider->wide_handler->trx,
                spider->wide_handler->trx->thd,
                share,
                roop_count,
                (uint32) share->monitoring_sid[roop_count],
                share->table_name,
                share->table_name_length,
                spider->conn_link_idx[roop_count],
                NULL,
                0,
                share->monitoring_kind[roop_count],
                share->monitoring_limit[roop_count],
                share->monitoring_flag[roop_count],
                FALSE
              );
          }
          share->init_error = TRUE;
          share->init_error_time = (time_t) time((time_t*) 0);
          share->init = TRUE;
          goto error_after_alloc_dbton_handler;
        }
        spider->conns[roop_count]->error_mode &= spider->error_mode;
      }
    }
    search_link_idx = spider_conn_first_link_idx(thd,
      share->link_statuses, share->access_balances, spider->conn_link_idx,
      share->link_count, SPIDER_LINK_STATUS_OK);
    if (search_link_idx == -1)
    {
      char *db = (char *) my_alloca(
        table_share->db.length + 1 + table_share->table_name.length + 1);
      if (!db)
      {
        *error_num = HA_ERR_OUT_OF_MEM;
        share->init_error = TRUE;
        share->init_error_time = (time_t) time((time_t*) 0);
        share->init = TRUE;
        goto error_after_alloc_dbton_handler;
      }
      char *table_name = db + table_share->db.length + 1;
      memcpy(db, table_share->db.str, table_share->db.length);
      db[table_share->db.length] = '\0';
      memcpy(table_name, table_share->table_name.str,
        table_share->table_name.length);
      table_name[table_share->table_name.length] = '\0';
      my_printf_error(ER_SPIDER_ALL_LINKS_FAILED_NUM,
        ER_SPIDER_ALL_LINKS_FAILED_STR, MYF(0), db, table_name);
      my_afree(db);
      *error_num = ER_SPIDER_ALL_LINKS_FAILED_NUM;
      share->init_error = TRUE;
      share->init_error_time = (time_t) time((time_t*) 0);
      share->init = TRUE;
      goto error_after_alloc_dbton_handler;
    } else if (search_link_idx == -2)
    {
      *error_num = HA_ERR_OUT_OF_MEM;
      share->init_error = TRUE;
      share->init_error_time = (time_t) time((time_t*) 0);
      share->init = TRUE;
      goto error_after_alloc_dbton_handler;
    }
    spider->search_link_idx = search_link_idx;

    same_server_link = spider_param_same_server_link(thd);
    load_sts_at_startup =
      spider_param_load_sts_at_startup(share->load_sts_at_startup);
    load_crd_at_startup =
      spider_param_load_crd_at_startup(share->load_crd_at_startup);
    if (
      sql_command != SQLCOM_DROP_TABLE &&
      sql_command != SQLCOM_ALTER_TABLE &&
      sql_command != SQLCOM_SHOW_CREATE &&
      !spider->error_mode &&
      (
        !same_server_link ||
        load_sts_at_startup ||
        load_crd_at_startup
      )
    ) {
      SPIDER_INIT_ERROR_TABLE *spider_init_error_table;
      sts_interval = spider_param_sts_interval(thd, share->sts_interval);
      sts_mode = spider_param_sts_mode(thd, share->sts_mode);
#ifdef WITH_PARTITION_STORAGE_ENGINE
      sts_sync = spider_param_sts_sync(thd, share->sts_sync);
      auto_increment_mode = spider_param_auto_increment_mode(thd,
        share->auto_increment_mode);
      if (auto_increment_mode == 1)
        sts_sync = 0;
#endif
      crd_interval = spider_param_crd_interval(thd, share->crd_interval);
      crd_mode = spider_param_crd_mode(thd, share->crd_mode);
      if (crd_mode == 3)
        crd_mode = 1;
#ifdef WITH_PARTITION_STORAGE_ENGINE
      crd_sync = spider_param_crd_sync(thd, share->crd_sync);
#endif
      time_t tmp_time = (time_t) time((time_t*) 0);
      pthread_mutex_lock(&share->sts_mutex);
      pthread_mutex_lock(&share->crd_mutex);
      if ((spider_init_error_table =
        spider_get_init_error_table(spider->wide_handler->trx, share, FALSE)))
      {
        DBUG_PRINT("info",("spider diff1=%f",
          difftime(tmp_time, spider_init_error_table->init_error_time)));
        if (difftime(tmp_time,
          spider_init_error_table->init_error_time) <
          spider_param_table_init_error_interval())
        {
          *error_num = spider_init_error_table->init_error;
          if (spider_init_error_table->init_error_with_message)
            my_message(spider_init_error_table->init_error,
              spider_init_error_table->init_error_msg, MYF(0));
          share->init_error = TRUE;
          share->init = TRUE;
          pthread_mutex_unlock(&share->crd_mutex);
          pthread_mutex_unlock(&share->sts_mutex);
          goto error_after_alloc_dbton_handler;
        }
      }

      if (
        (
          !same_server_link ||
          load_sts_at_startup
        ) &&
        (*error_num = spider_get_sts(share, spider->search_link_idx, tmp_time,
          spider, sts_interval, sts_mode,
#ifdef WITH_PARTITION_STORAGE_ENGINE
          sts_sync,
#endif
          1, HA_STATUS_VARIABLE | HA_STATUS_CONST | HA_STATUS_AUTO))
      ) {
        if (*error_num != ER_SPIDER_SYS_TABLE_VERSION_NUM)
        {
          thd->clear_error();
        } else {
          pthread_mutex_unlock(&share->crd_mutex);
          pthread_mutex_unlock(&share->sts_mutex);
          share->init_error = TRUE;
          share->init_error_time = (time_t) time((time_t*) 0);
          share->init = TRUE;
          goto error_after_alloc_dbton_handler;
        }
      }
      if (
        (
          !same_server_link ||
          load_crd_at_startup
        ) &&
        (*error_num = spider_get_crd(share, spider->search_link_idx, tmp_time,
          spider, table, crd_interval, crd_mode,
#ifdef WITH_PARTITION_STORAGE_ENGINE
          crd_sync,
#endif
          1))
      ) {
        if (*error_num != ER_SPIDER_SYS_TABLE_VERSION_NUM &&
            *error_num != ER_SPIDER_INFINITE_LOOP_NUM &&
            *error_num != ER_NO_SUCH_TABLE)
        {
          thd->clear_error();
        } else {
          pthread_mutex_unlock(&share->crd_mutex);
          pthread_mutex_unlock(&share->sts_mutex);
          share->init_error = TRUE;
          share->init_error_time = (time_t) time((time_t*) 0);
          share->init = TRUE;
          goto error_after_alloc_dbton_handler;
        }
      }
      pthread_mutex_unlock(&share->crd_mutex);
      pthread_mutex_unlock(&share->sts_mutex);
    }

    share->init = TRUE;
  } else {
    share->use_count++;
    pthread_mutex_unlock(&spider_tbl_mutex);

    int sleep_cnt = 0;
    while (!share->init)
    {
      // avoid for dead loop
      if (sleep_cnt++ > 1000)
      {
        fprintf(stderr, " [WARN SPIDER RESULT] "
          "Wait share->init too long, table_name %s %s %ld\n",
          share->table_name, share->tgt_hosts[0], share->tgt_ports[0]);
        *error_num = ER_SPIDER_TABLE_OPEN_TIMEOUT_NUM;
        my_printf_error(ER_SPIDER_TABLE_OPEN_TIMEOUT_NUM,
          ER_SPIDER_TABLE_OPEN_TIMEOUT_STR, MYF(0),
          table_share->db.str, table_share->table_name.str);
        spider_free_share(share);
        goto error_but_no_delete;
      }
      my_sleep(10000); // wait 10 ms
    }

    if (!share->link_status_init)
    {
      pthread_mutex_lock(&share->mutex);
      for (roop_count = 0;
        roop_count < (int) spider_param_udf_table_mon_mutex_count();
        roop_count++
      ) {
        if (spider_bit_is_set(share->table_mon_mutex_bitmap, roop_count))
          pthread_mutex_lock(&spider_udf_table_mon_mutexes[roop_count]);
      }
      if (!share->link_status_init)
      {
        DBUG_ASSERT(!table_tables);
        /*
          The link statuses need to be refreshed from the spider_tables table
          if the operation:
          - Is not a DROP TABLE on a permanent table; or
          - Is an ALTER TABLE.

          Note that SHOW CREATE TABLE is not excluded, because the commands
          that follow it require up-to-date link statuses.
        */
        if ((table_share->tmp_table == NO_TMP_TABLE &&
             sql_command != SQLCOM_DROP_TABLE) ||
            /* for alter change link status */
            sql_command == SQLCOM_ALTER_TABLE)
        {
          SPD_INIT_ALLOC_ROOT(&mem_root, 4096, 0, MYF(MY_WME));
          init_mem_root = TRUE;

          if (
            !(table_tables = spider_open_sys_table(
              thd, SPIDER_SYS_TABLES_TABLE_NAME_STR,
              SPIDER_SYS_TABLES_TABLE_NAME_LEN, FALSE, &open_tables_backup,
              FALSE, error_num))
          ) {
            for (roop_count = 0;
              roop_count < (int) spider_param_udf_table_mon_mutex_count();
              roop_count++
            ) {
              if (spider_bit_is_set(share->table_mon_mutex_bitmap, roop_count))
                pthread_mutex_unlock(&spider_udf_table_mon_mutexes[roop_count]);
            }
            pthread_mutex_unlock(&share->mutex);
            spider_free_share(share);
            goto error_open_sys_table;
          }
          *error_num = spider_get_link_statuses(table_tables, share,
            &mem_root);
          if (*error_num)
          {
            if (
              *error_num != HA_ERR_KEY_NOT_FOUND &&
              *error_num != HA_ERR_END_OF_FILE
            ) {
              for (roop_count = 0;
                roop_count < (int) spider_param_udf_table_mon_mutex_count();
                roop_count++
              ) {
                if (spider_bit_is_set(share->table_mon_mutex_bitmap, roop_count))
                  pthread_mutex_unlock(&spider_udf_table_mon_mutexes[roop_count]);
              }
              pthread_mutex_unlock(&share->mutex);
              spider_free_share(share);
              spider_close_sys_table(thd, table_tables,
                &open_tables_backup, FALSE);
              table_tables = NULL;
              goto error_open_sys_table;
            }
          } else {
            memcpy(share->alter_table.tmp_link_statuses, share->link_statuses,
              sizeof(long) * share->all_link_count);
            share->link_status_init = TRUE;
          }
          spider_close_sys_table(thd, table_tables,
            &open_tables_backup, FALSE);
          table_tables = NULL;
        }
        share->have_recovery_link = spider_conn_check_recovery_link(share);
        if (init_mem_root)
        {
          free_root(&mem_root, MYF(0));
          init_mem_root = FALSE;
        }
      }
      for (roop_count = 0;
        roop_count < (int) spider_param_udf_table_mon_mutex_count();
        roop_count++
      ) {
        if (spider_bit_is_set(share->table_mon_mutex_bitmap, roop_count))
          pthread_mutex_unlock(&spider_udf_table_mon_mutexes[roop_count]);
      }
      pthread_mutex_unlock(&share->mutex);
    }

    semi_table_lock_conn = spider_param_semi_table_lock_connection(thd,
      share->semi_table_lock_conn);
    if (semi_table_lock_conn)
      first_byte = '0' +
        spider_param_semi_table_lock(thd, share->semi_table_lock);
    else
      first_byte = '0';

    spider->share = share;
    if (!(spider->wide_handler->trx = spider_get_trx(thd, TRUE, error_num)))
    {
      spider_free_share(share);
      goto error_but_no_delete;
    }
    spider->set_error_mode();

#ifndef WITHOUT_SPIDER_BG_SEARCH
    if (!share->sts_spider_init)
    {
      pthread_mutex_lock(&share->mutex);
      if (!share->sts_spider_init)
      {
        if ((*error_num = spider_create_spider_object_for_share(
          spider->wide_handler->trx, share, &share->sts_spider)))
        {
          pthread_mutex_unlock(&share->mutex);
          spider_free_share(share);
          goto error_sts_spider_init;
        }
#ifdef HASH_UPDATE_WITH_HASH_VALUE
        share->sts_thread = &spider_table_sts_threads[
          hash_value % spider_param_table_sts_thread_count()];
#else
        share->sts_thread = &spider_table_sts_threads[
          my_calc_hash(&spider_open_tables, (uchar*) table_name, length) %
          spider_param_table_sts_thread_count()];
#endif
        share->sts_spider_init = TRUE;
      }
      pthread_mutex_unlock(&share->mutex);
    }

    if (!share->crd_spider_init)
    {
      pthread_mutex_lock(&share->mutex);
      if (!share->crd_spider_init)
      {
        if ((*error_num = spider_create_spider_object_for_share(
          spider->wide_handler->trx, share, &share->crd_spider)))
        {
          pthread_mutex_unlock(&share->mutex);
          spider_free_share(share);
          goto error_crd_spider_init;
        }
#ifdef HASH_UPDATE_WITH_HASH_VALUE
        share->crd_thread = &spider_table_crd_threads[
          hash_value % spider_param_table_crd_thread_count()];
#else
        share->crd_thread = &spider_table_crd_threads[
          my_calc_hash(&spider_open_tables, (uchar*) table_name, length) %
          spider_param_table_crd_thread_count()];
#endif
        share->crd_spider_init = TRUE;
      }
      pthread_mutex_unlock(&share->mutex);
    }
#endif

#ifndef WITHOUT_SPIDER_BG_SEARCH
    if (
      sql_command != SQLCOM_DROP_TABLE &&
      sql_command != SQLCOM_ALTER_TABLE &&
      sql_command != SQLCOM_SHOW_CREATE &&
      (*error_num = spider_create_mon_threads(spider->wide_handler->trx,
        share))
    ) {
      spider_free_share(share);
      goto error_but_no_delete;
    }
#endif

    if (!(spider->conn_keys = (char **)
      spider_bulk_alloc_mem(spider_current_trx, SPD_MID_GET_SHARE_2,
        __func__, __FILE__, __LINE__, MYF(MY_WME | MY_ZEROFILL),
        &spider->conn_keys, sizeof(char *) * share->link_count,
        &tmp_name, sizeof(char) * share->conn_keys_charlen,
        &spider->conns, sizeof(SPIDER_CONN *) * share->link_count,
        &spider->conn_link_idx, sizeof(uint) * share->link_count,
        &spider->conn_can_fo, sizeof(uchar) * share->link_bitmap_size,
        &spider->sql_kind, sizeof(uint) * share->link_count,
        &spider->connection_ids, sizeof(ulonglong) * share->link_count,
        &spider->conn_kind, sizeof(uint) * share->link_count,
        &spider->db_request_id, sizeof(ulonglong) * share->link_count,
        &spider->db_request_phase, sizeof(uchar) * share->link_bitmap_size,
        &spider->m_handler_opened, sizeof(uchar) * share->link_bitmap_size,
        &spider->m_handler_id, sizeof(uint) * share->link_count,
        &spider->m_handler_cid, sizeof(char *) * share->link_count,
        &tmp_cid, sizeof(char) * (SPIDER_SQL_HANDLER_CID_LEN + 1) *
          share->link_count,
        &spider->need_mons, sizeof(int) * share->link_count,
        &spider->quick_targets, sizeof(void *) * share->link_count,
        &result_list->upd_tmp_tbls, sizeof(TABLE *) * share->link_count,
        &result_list->upd_tmp_tbl_prms,
          sizeof(TMP_TABLE_PARAM) * share->link_count,
        &result_list->tmp_table_join_first,
          sizeof(uchar) * share->link_bitmap_size,
        &result_list->tmp_table_created,
          sizeof(uchar) * share->link_bitmap_size,
#ifdef HA_CAN_BULK_ACCESS
#endif
        &result_list->sql_kind_backup, sizeof(uint) * share->link_count,
        &result_list->casual_read, sizeof(int) * share->link_count,
        &spider->dbton_handler,
          sizeof(spider_db_handler *) * SPIDER_DBTON_SIZE,
        NullS))
    ) {
      spider_free_share(share);
      goto error_but_no_delete;
    }
    memcpy(tmp_name, share->conn_keys[0], share->conn_keys_charlen);

    spider->conn_keys_first_ptr = tmp_name;
    for (roop_count = 0; roop_count < (int) share->link_count; roop_count++)
    {
      spider->conn_keys[roop_count] = tmp_name;
      *tmp_name = first_byte;
      tmp_name += share->conn_keys_lengths[roop_count] + 1;
      spider->m_handler_cid[roop_count] = tmp_cid;
      tmp_cid += SPIDER_SQL_HANDLER_CID_LEN + 1;
      result_list->upd_tmp_tbl_prms[roop_count].init();
      result_list->upd_tmp_tbl_prms[roop_count].field_count = 1;
      spider->conn_kind[roop_count] = SPIDER_CONN_KIND_MYSQL;
    }
    spider_trx_set_link_idx_for_all(spider);

    for (roop_count = 0; roop_count < (int) share->use_dbton_count;
      roop_count++)
    {
      uint dbton_id = share->use_dbton_ids[roop_count];
      if (!(spider->dbton_handler[dbton_id] =
        spider_dbton[dbton_id].create_db_handler(spider,
        share->dbton_share[dbton_id])))
      {
        *error_num = HA_ERR_OUT_OF_MEM;
        break;
      }
      if ((*error_num = spider->dbton_handler[dbton_id]->init()))
      {
        break;
      }
    }
    if (roop_count < (int) share->use_dbton_count)
    {
      for (; roop_count >= 0; roop_count--)
      {
        uint dbton_id = share->use_dbton_ids[roop_count];
        if (spider->dbton_handler[dbton_id])
        {
          delete spider->dbton_handler[dbton_id];
          spider->dbton_handler[dbton_id] = NULL;
        }
      }
      goto error_after_alloc_conn_keys;
    }

    if (
      sql_command != SQLCOM_DROP_TABLE &&
      sql_command != SQLCOM_ALTER_TABLE &&
      sql_command != SQLCOM_SHOW_CREATE
    ) {
      for (
        roop_count = spider_conn_link_idx_next(share->link_statuses,
          spider->conn_link_idx, -1, share->link_count,
          SPIDER_LINK_STATUS_RECOVERY);
        roop_count < (int) share->link_count;
        roop_count = spider_conn_link_idx_next(share->link_statuses,
          spider->conn_link_idx, roop_count, share->link_count,
          SPIDER_LINK_STATUS_RECOVERY)
      ) {
        if (
          !(spider->conns[roop_count] =
            spider_get_conn(share, roop_count, spider->conn_keys[roop_count],
              spider->wide_handler->trx, spider, FALSE, TRUE,
              SPIDER_CONN_KIND_MYSQL,
              error_num))
        ) {
          if (
            share->monitoring_kind[roop_count] &&
            spider->need_mons[roop_count]
          ) {
            *error_num = spider_ping_table_mon_from_table(
                spider->wide_handler->trx,
                spider->wide_handler->trx->thd,
                share,
                roop_count,
                (uint32) share->monitoring_sid[roop_count],
                share->table_name,
                share->table_name_length,
                spider->conn_link_idx[roop_count],
                NULL,
                0,
                share->monitoring_kind[roop_count],
                share->monitoring_limit[roop_count],
                share->monitoring_flag[roop_count],
                FALSE
              );
          }
          goto error_after_alloc_dbton_handler;
        }
        spider->conns[roop_count]->error_mode &= spider->error_mode;
      }
    }
    search_link_idx = spider_conn_first_link_idx(thd,
      share->link_statuses, share->access_balances, spider->conn_link_idx,
      share->link_count, SPIDER_LINK_STATUS_OK);
    if (search_link_idx == -1)
    {
      char *db = (char *) my_alloca(
        table_share->db.length + 1 + table_share->table_name.length + 1);
      if (!db)
      {
        *error_num = HA_ERR_OUT_OF_MEM;
        goto error_after_alloc_dbton_handler;
      }
      char *table_name = db + table_share->db.length + 1;
      memcpy(db, table_share->db.str, table_share->db.length);
      db[table_share->db.length] = '\0';
      memcpy(table_name, table_share->table_name.str,
        table_share->table_name.length);
      table_name[table_share->table_name.length] = '\0';
      my_printf_error(ER_SPIDER_ALL_LINKS_FAILED_NUM,
        ER_SPIDER_ALL_LINKS_FAILED_STR, MYF(0), db, table_name);
      my_afree(db);
      *error_num = ER_SPIDER_ALL_LINKS_FAILED_NUM;
      goto error_after_alloc_dbton_handler;
    } else if (search_link_idx == -2)
    {
      *error_num = HA_ERR_OUT_OF_MEM;
      goto error_after_alloc_dbton_handler;
    }
    spider->search_link_idx = search_link_idx;

    if (share->init_error)
    {
      pthread_mutex_lock(&share->sts_mutex);
      pthread_mutex_lock(&share->crd_mutex);
      if (share->init_error)
      {
        same_server_link = spider_param_same_server_link(thd);
        load_sts_at_startup =
          spider_param_load_sts_at_startup(share->load_sts_at_startup);
        load_crd_at_startup =
          spider_param_load_crd_at_startup(share->load_crd_at_startup);
        if (
          sql_command != SQLCOM_DROP_TABLE &&
          sql_command != SQLCOM_ALTER_TABLE &&
          sql_command != SQLCOM_SHOW_CREATE &&
          !spider->error_mode &&
          (
            !same_server_link ||
            load_sts_at_startup ||
            load_crd_at_startup
          )
        ) {
          SPIDER_INIT_ERROR_TABLE *spider_init_error_table;
          sts_interval = spider_param_sts_interval(thd, share->sts_interval);
          sts_mode = spider_param_sts_mode(thd, share->sts_mode);
#ifdef WITH_PARTITION_STORAGE_ENGINE
          sts_sync = spider_param_sts_sync(thd, share->sts_sync);
          auto_increment_mode = spider_param_auto_increment_mode(thd,
            share->auto_increment_mode);
          if (auto_increment_mode == 1)
            sts_sync = 0;
#endif
          crd_interval = spider_param_crd_interval(thd, share->crd_interval);
          crd_mode = spider_param_crd_mode(thd, share->crd_mode);
          if (crd_mode == 3)
            crd_mode = 1;
#ifdef WITH_PARTITION_STORAGE_ENGINE
          crd_sync = spider_param_crd_sync(thd, share->crd_sync);
#endif
          time_t tmp_time = (time_t) time((time_t*) 0);
          if ((spider_init_error_table =
            spider_get_init_error_table(spider->wide_handler->trx, share,
              FALSE)))
          {
            DBUG_PRINT("info",("spider diff2=%f",
              difftime(tmp_time, spider_init_error_table->init_error_time)));
            if (difftime(tmp_time,
              spider_init_error_table->init_error_time) <
              spider_param_table_init_error_interval())
            {
              *error_num = spider_init_error_table->init_error;
              if (spider_init_error_table->init_error_with_message)
                my_message(spider_init_error_table->init_error,
                  spider_init_error_table->init_error_msg, MYF(0));
              pthread_mutex_unlock(&share->crd_mutex);
              pthread_mutex_unlock(&share->sts_mutex);
              goto error_after_alloc_dbton_handler;
            }
          }

          if (
            (
              !same_server_link ||
              load_sts_at_startup
            ) &&
            (*error_num = spider_get_sts(share, spider->search_link_idx,
              tmp_time, spider, sts_interval, sts_mode,
#ifdef WITH_PARTITION_STORAGE_ENGINE
              sts_sync,
#endif
              1, HA_STATUS_VARIABLE | HA_STATUS_CONST | HA_STATUS_AUTO))
          ) {
            if (*error_num != ER_SPIDER_SYS_TABLE_VERSION_NUM)
            {
              thd->clear_error();
            } else {
              pthread_mutex_unlock(&share->crd_mutex);
              pthread_mutex_unlock(&share->sts_mutex);
              goto error_after_alloc_dbton_handler;
            }
          }
          if (
            (
              !same_server_link ||
              load_crd_at_startup
            ) &&
            (*error_num = spider_get_crd(share, spider->search_link_idx,
              tmp_time, spider, table, crd_interval, crd_mode,
#ifdef WITH_PARTITION_STORAGE_ENGINE
              crd_sync,
#endif
              1))
          ) {
            if (*error_num != ER_SPIDER_SYS_TABLE_VERSION_NUM)
            {
              thd->clear_error();
            } else {
              pthread_mutex_unlock(&share->crd_mutex);
              pthread_mutex_unlock(&share->sts_mutex);
              goto error_after_alloc_dbton_handler;
            }
          }
        }
        share->init_error = FALSE;
      }
      pthread_mutex_unlock(&share->crd_mutex);
      pthread_mutex_unlock(&share->sts_mutex);
    }
  }

  DBUG_PRINT("info",("spider share=%p", share));
  DBUG_RETURN(share);

error_after_alloc_dbton_handler:
  for (roop_count = 0; roop_count < (int) share->use_dbton_count; ++roop_count)
  {
    uint dbton_id = share->use_dbton_ids[roop_count];
    if (spider->dbton_handler[dbton_id])
    {
      delete spider->dbton_handler[dbton_id];
      spider->dbton_handler[dbton_id] = NULL;
    }
  }
error_after_alloc_conn_keys:
  spider_free(spider_current_trx, spider->conn_keys, MYF(0));
  spider->conn_keys = NULL;
  spider_free_share(share);
  goto error_but_no_delete;

error_hash_insert:
  spider_free_share_resource_only(share);
error_alloc_share:
  pthread_mutex_unlock(&spider_tbl_mutex);
error_open_sys_table:
#ifndef WITHOUT_SPIDER_BG_SEARCH
error_crd_spider_init:
error_sts_spider_init:
#endif
  if (init_mem_root)
  {
    free_root(&mem_root, MYF(0));
    init_mem_root = FALSE;
  }
error_but_no_delete:
  DBUG_RETURN(NULL);
}

void spider_free_share_resource_only(
  SPIDER_SHARE *share
) {
  DBUG_ENTER("spider_free_share_resource_only");
  spider_free_share_alloc(share);
  pthread_mutex_destroy(&share->crd_mutex);
  pthread_mutex_destroy(&share->sts_mutex);
  pthread_mutex_destroy(&share->mutex);
  spider_free(spider_current_trx, share, MYF(0));
  DBUG_VOID_RETURN;
}

int spider_free_share(
  SPIDER_SHARE *share
) {
  DBUG_ENTER("spider_free_share");
  pthread_mutex_lock(&spider_tbl_mutex);
  if (!--share->use_count)
  {
#ifndef WITHOUT_SPIDER_BG_SEARCH
    spider_free_sts_thread(share);
    spider_free_crd_thread(share);
    spider_free_mon_threads(share);
    if (share->sts_spider_init)
    {
      spider_table_remove_share_from_sts_thread(share);
      spider_free_spider_object_for_share(&share->sts_spider);
    }
    if (share->crd_spider_init)
    {
      spider_table_remove_share_from_crd_thread(share);
      spider_free_spider_object_for_share(&share->crd_spider);
    }
#endif
    spider_free_share_alloc(share);
#ifdef HASH_UPDATE_WITH_HASH_VALUE
    my_hash_delete_with_hash_value(&spider_open_tables,
      share->table_name_hash_value, (uchar*) share);
#else
    my_hash_delete(&spider_open_tables, (uchar*) share);
#endif
    pthread_mutex_destroy(&share->crd_mutex);
    pthread_mutex_destroy(&share->sts_mutex);
    pthread_mutex_destroy(&share->mutex);
    free_root(&share->mem_root, MYF(0));
    spider_free(spider_current_trx, share, MYF(0));
  }
  pthread_mutex_unlock(&spider_tbl_mutex);
  DBUG_RETURN(0);
}

void spider_update_link_status_for_share(
  const char *table_name,
  uint table_name_length,
  int link_idx,
  long link_status
) {
  SPIDER_SHARE *share;
  DBUG_ENTER("spider_update_link_status_for_share");

#ifdef SPIDER_HAS_HASH_VALUE_TYPE
  my_hash_value_type hash_value = my_calc_hash(&spider_open_tables,
    (uchar*) table_name, table_name_length);
#endif
  pthread_mutex_lock(&spider_tbl_mutex);
#ifdef SPIDER_HAS_HASH_VALUE_TYPE
  if ((share = (SPIDER_SHARE*) my_hash_search_using_hash_value(
    &spider_open_tables, hash_value, (uchar*) table_name,
    table_name_length)))
#else
  if ((share = (SPIDER_SHARE*) my_hash_search(&spider_open_tables,
    (uchar*) table_name, table_name_length)))
#endif
  {
    DBUG_PRINT("info", ("spider share->link_status_init=%s",
      share->link_status_init ? "TRUE" : "FALSE"));
    if (share->link_status_init)
    {
      DBUG_PRINT("info", ("spider share->link_statuses[%d]=%ld",
        link_idx, link_status));
      share->link_statuses[link_idx] = link_status;
    }
  }
  pthread_mutex_unlock(&spider_tbl_mutex);
  DBUG_VOID_RETURN;
}

#ifdef SPIDER_HAS_HASH_VALUE_TYPE
SPIDER_LGTM_TBLHND_SHARE *spider_get_lgtm_tblhnd_share(
  const char *table_name,
  uint table_name_length,
  my_hash_value_type hash_value,
  bool locked,
  bool need_to_create,
  int *error_num
)
#else
SPIDER_LGTM_TBLHND_SHARE *spider_get_lgtm_tblhnd_share(
  const char *table_name,
  uint table_name_length,
  bool locked,
  bool need_to_create,
  int *error_num
)
#endif
{
  SPIDER_LGTM_TBLHND_SHARE *lgtm_tblhnd_share;
  char *tmp_name;
  DBUG_ENTER("spider_get_lgtm_tblhnd_share");

  if (!locked)
    pthread_mutex_lock(&spider_lgtm_tblhnd_share_mutex);
#ifdef SPIDER_HAS_HASH_VALUE_TYPE
  if (!(lgtm_tblhnd_share = (SPIDER_LGTM_TBLHND_SHARE*)
    my_hash_search_using_hash_value(
    &spider_lgtm_tblhnd_share_hash, hash_value,
    (uchar*) table_name, table_name_length)))
#else
  if (!(lgtm_tblhnd_share = (SPIDER_LGTM_TBLHND_SHARE*) my_hash_search(
    &spider_lgtm_tblhnd_share_hash,
    (uchar*) table_name, table_name_length)))
#endif
  {
    DBUG_PRINT("info",("spider create new lgtm tblhnd share"));
    if (!(lgtm_tblhnd_share = (SPIDER_LGTM_TBLHND_SHARE *)
      spider_bulk_malloc(spider_current_trx, SPD_MID_GET_LGTM_TBLHND_SHARE_1, MYF(MY_WME | MY_ZEROFILL),
        &lgtm_tblhnd_share, (uint) (sizeof(*lgtm_tblhnd_share)),
        &tmp_name, (uint) (table_name_length + 1),
        NullS))
    ) {
      *error_num = HA_ERR_OUT_OF_MEM;
      goto error_alloc_share;
    }

    lgtm_tblhnd_share->table_name_length = table_name_length;
    lgtm_tblhnd_share->table_name = tmp_name;
    memcpy(lgtm_tblhnd_share->table_name, table_name,
      lgtm_tblhnd_share->table_name_length);
#ifdef SPIDER_HAS_HASH_VALUE_TYPE
    lgtm_tblhnd_share->table_path_hash_value = hash_value;
#endif

    if (mysql_mutex_init(spd_key_mutex_share_auto_increment,
      &lgtm_tblhnd_share->auto_increment_mutex, MY_MUTEX_INIT_FAST))
    {
      *error_num = HA_ERR_OUT_OF_MEM;
      goto error_init_auto_increment_mutex;
    }

    uint old_elements = spider_lgtm_tblhnd_share_hash.array.max_element;
#ifdef HASH_UPDATE_WITH_HASH_VALUE
    if (my_hash_insert_with_hash_value(&spider_lgtm_tblhnd_share_hash,
      hash_value, (uchar*) lgtm_tblhnd_share))
#else
    if (my_hash_insert(&spider_lgtm_tblhnd_share_hash,
      (uchar*) lgtm_tblhnd_share))
#endif
    {
      *error_num = HA_ERR_OUT_OF_MEM;
      goto error_hash_insert;
    }
    if (spider_lgtm_tblhnd_share_hash.array.max_element > old_elements)
    {
      spider_alloc_calc_mem(spider_current_trx,
        spider_lgtm_tblhnd_share_hash,
        (spider_lgtm_tblhnd_share_hash.array.max_element - old_elements) *
        spider_lgtm_tblhnd_share_hash.array.size_of_element);
    }
  }
  if (!locked)
    pthread_mutex_unlock(&spider_lgtm_tblhnd_share_mutex);

  DBUG_PRINT("info",("spider lgtm_tblhnd_share=%p", lgtm_tblhnd_share));
  DBUG_RETURN(lgtm_tblhnd_share);

error_hash_insert:
  pthread_mutex_destroy(&lgtm_tblhnd_share->auto_increment_mutex);
error_init_auto_increment_mutex:
  spider_free(spider_current_trx, lgtm_tblhnd_share, MYF(0));
error_alloc_share:
  if (!locked)
    pthread_mutex_unlock(&spider_lgtm_tblhnd_share_mutex);
  DBUG_RETURN(NULL);
}

void spider_free_lgtm_tblhnd_share_alloc(
  SPIDER_LGTM_TBLHND_SHARE *lgtm_tblhnd_share,
  bool locked
) {
  DBUG_ENTER("spider_free_lgtm_tblhnd_share");
  if (!locked)
    pthread_mutex_lock(&spider_lgtm_tblhnd_share_mutex);
#ifdef HASH_UPDATE_WITH_HASH_VALUE
  my_hash_delete_with_hash_value(&spider_lgtm_tblhnd_share_hash,
    lgtm_tblhnd_share->table_path_hash_value, (uchar*) lgtm_tblhnd_share);
#else
  my_hash_delete(&spider_lgtm_tblhnd_share_hash, (uchar*) lgtm_tblhnd_share);
#endif
  pthread_mutex_destroy(&lgtm_tblhnd_share->auto_increment_mutex);
  spider_free(spider_current_trx, lgtm_tblhnd_share, MYF(0));
  if (!locked)
    pthread_mutex_unlock(&spider_lgtm_tblhnd_share_mutex);
  DBUG_VOID_RETURN;
}

SPIDER_WIDE_SHARE *spider_get_wide_share(
  SPIDER_SHARE *share,
  TABLE_SHARE *table_share,
  int *error_num
) {
  SPIDER_WIDE_SHARE *wide_share;
  char *tmp_name;
  longlong *tmp_cardinality;
  DBUG_ENTER("spider_get_wide_share");

  pthread_mutex_lock(&spider_wide_share_mutex);
#ifdef SPIDER_HAS_HASH_VALUE_TYPE
  if (!(wide_share = (SPIDER_WIDE_SHARE*)
    my_hash_search_using_hash_value(
    &spider_open_wide_share, share->table_path_hash_value,
    (uchar*) table_share->path.str, table_share->path.length)))
#else
  if (!(wide_share = (SPIDER_WIDE_SHARE*) my_hash_search(
    &spider_open_wide_share,
    (uchar*) table_share->path.str, table_share->path.length)))
#endif
  {
    DBUG_PRINT("info",("spider create new wide share"));
    if (!(wide_share = (SPIDER_WIDE_SHARE *)
      spider_bulk_malloc(spider_current_trx,  SPD_MID_GET_PT_SHARE_1, MYF(MY_WME | MY_ZEROFILL),
        &wide_share, sizeof(SPIDER_WIDE_SHARE),
        &tmp_name, (uint) (table_share->path.length + 1),
        &tmp_cardinality,
          (uint) (sizeof(*tmp_cardinality) * table_share->fields),
        NullS))
    ) {
      *error_num = HA_ERR_OUT_OF_MEM;
      goto error_alloc_share;
    }

    wide_share->use_count = 0;
    wide_share->table_name_length = table_share->path.length;
    wide_share->table_name = tmp_name;
    memcpy(wide_share->table_name, table_share->path.str,
      wide_share->table_name_length);
#ifdef SPIDER_HAS_HASH_VALUE_TYPE
    wide_share->table_path_hash_value = share->table_path_hash_value;
#endif
    wide_share->cardinality = tmp_cardinality;

    wide_share->crd_get_time = wide_share->sts_get_time =
      share->crd_get_time;

    if (mysql_mutex_init(spd_key_mutex_wide_share_sts,
      &wide_share->sts_mutex, MY_MUTEX_INIT_FAST))
    {
      *error_num = HA_ERR_OUT_OF_MEM;
      goto error_init_sts_mutex;
    }

    if (mysql_mutex_init(spd_key_mutex_wide_share_crd,
      &wide_share->crd_mutex, MY_MUTEX_INIT_FAST))
    {
      *error_num = HA_ERR_OUT_OF_MEM;
      goto error_init_crd_mutex;
    }

    thr_lock_init(&wide_share->lock);

    uint old_elements = spider_open_wide_share.array.max_element;
#ifdef HASH_UPDATE_WITH_HASH_VALUE
    if (my_hash_insert_with_hash_value(&spider_open_wide_share,
      share->table_path_hash_value,
      (uchar*) wide_share))
#else
    if (my_hash_insert(&spider_open_wide_share, (uchar*) wide_share))
#endif
    {
      *error_num = HA_ERR_OUT_OF_MEM;
      goto error_hash_insert;
    }
    if (spider_open_wide_share.array.max_element > old_elements)
    {
      spider_alloc_calc_mem(spider_current_trx,
        spider_open_wide_share,
        (spider_open_wide_share.array.max_element - old_elements) *
        spider_open_wide_share.array.size_of_element);
    }
  }
  wide_share->use_count++;
  pthread_mutex_unlock(&spider_wide_share_mutex);

  DBUG_PRINT("info",("spider wide_share=%p", wide_share));
  DBUG_RETURN(wide_share);

error_hash_insert:
  pthread_mutex_destroy(&wide_share->crd_mutex);
error_init_crd_mutex:
  pthread_mutex_destroy(&wide_share->sts_mutex);
error_init_sts_mutex:
  spider_free(spider_current_trx, wide_share, MYF(0));
error_alloc_share:
  pthread_mutex_unlock(&spider_wide_share_mutex);
  DBUG_RETURN(NULL);
}

int spider_free_wide_share(
  SPIDER_WIDE_SHARE *wide_share
) {
  DBUG_ENTER("spider_free_wide_share");
  pthread_mutex_lock(&spider_wide_share_mutex);
  if (!--wide_share->use_count)
  {
    thr_lock_delete(&wide_share->lock);
#ifdef HASH_UPDATE_WITH_HASH_VALUE
    my_hash_delete_with_hash_value(&spider_open_wide_share,
      wide_share->table_path_hash_value, (uchar*) wide_share);
#else
    my_hash_delete(&spider_open_wide_share, (uchar*) wide_share);
#endif
    pthread_mutex_destroy(&wide_share->crd_mutex);
    pthread_mutex_destroy(&wide_share->sts_mutex);
    spider_free(spider_current_trx, wide_share, MYF(0));
  }
  pthread_mutex_unlock(&spider_wide_share_mutex);
  DBUG_RETURN(0);
}

void spider_copy_sts_to_wide_share(
  SPIDER_WIDE_SHARE *wide_share,
  SPIDER_SHARE *share
) {
  DBUG_ENTER("spider_copy_sts_to_pt_share");
  wide_share->stat = share->stat;
  DBUG_VOID_RETURN;
}

void spider_copy_sts_to_share(
  SPIDER_SHARE *share,
  SPIDER_WIDE_SHARE *wide_share
) {
  DBUG_ENTER("spider_copy_sts_to_share");
  share->stat = wide_share->stat;
  DBUG_VOID_RETURN;
}

void spider_copy_crd_to_wide_share(
  SPIDER_WIDE_SHARE *wide_share,
  SPIDER_SHARE *share,
  int fields
) {
  DBUG_ENTER("spider_copy_crd_to_wide_share");
  memcpy(wide_share->cardinality, share->cardinality,
    sizeof(longlong) * fields);
  DBUG_VOID_RETURN;
}

void spider_copy_crd_to_share(
  SPIDER_SHARE *share,
  SPIDER_WIDE_SHARE *wide_share,
  int fields
) {
  DBUG_ENTER("spider_copy_crd_to_share");
  memcpy(share->cardinality, wide_share->cardinality,
    sizeof(longlong) * fields);
  DBUG_VOID_RETURN;
}

int spider_open_all_tables(
  SPIDER_TRX *trx,
  bool lock
) {
  THD *thd = trx->thd;
  TABLE *table_tables;
  int error_num, *need_mon, mon_val;
  SPIDER_SHARE tmp_share;
  char *db_name, *table_name;
  uint db_name_length, table_name_length;
  char *tmp_connect_info[SPIDER_TMP_SHARE_CHAR_PTR_COUNT];
  uint tmp_connect_info_length[SPIDER_TMP_SHARE_UINT_COUNT];
  long tmp_long[SPIDER_TMP_SHARE_LONG_COUNT];
  longlong tmp_longlong[SPIDER_TMP_SHARE_LONGLONG_COUNT];
  SPIDER_CONN *conn, **conns;
  ha_spider *spider;
  SPIDER_SHARE *share;
  char **connect_info;
  uint *connect_info_length;
  long *long_info;
  longlong *longlong_info;
  MEM_ROOT mem_root;
  SPIDER_Open_tables_backup open_tables_backup;
  DBUG_ENTER("spider_open_all_tables");
  if (
    !(table_tables = spider_open_sys_table(
      thd, SPIDER_SYS_TABLES_TABLE_NAME_STR,
      SPIDER_SYS_TABLES_TABLE_NAME_LEN, TRUE, &open_tables_backup, TRUE,
      &error_num))
  )
    DBUG_RETURN(error_num);
  if (
    (error_num = spider_sys_index_first(table_tables, 1))
  ) {
    if (error_num != HA_ERR_KEY_NOT_FOUND && error_num != HA_ERR_END_OF_FILE)
    {
      table_tables->file->print_error(error_num, MYF(0));
      spider_close_sys_table(thd, table_tables,
        &open_tables_backup, TRUE);
      DBUG_RETURN(error_num);
    } else {
      spider_close_sys_table(thd, table_tables,
        &open_tables_backup, TRUE);
      DBUG_RETURN(0);
    }
  }

  SPD_INIT_ALLOC_ROOT(&mem_root, 4096, 0, MYF(MY_WME));
  memset((void*)&tmp_share, 0, sizeof(SPIDER_SHARE));
  memset(&tmp_connect_info, 0,
    sizeof(char *) * SPIDER_TMP_SHARE_CHAR_PTR_COUNT);
  memset(tmp_connect_info_length, 0,
    sizeof(uint) * SPIDER_TMP_SHARE_UINT_COUNT);
  memset(tmp_long, 0, sizeof(long) * SPIDER_TMP_SHARE_LONG_COUNT);
  memset(tmp_longlong, 0, sizeof(longlong) * SPIDER_TMP_SHARE_LONGLONG_COUNT);
  spider_set_tmp_share_pointer(&tmp_share, (char **) &tmp_connect_info,
    tmp_connect_info_length, tmp_long, tmp_longlong);
  tmp_share.link_statuses[0] = -1;

  do {
    if (
      (error_num = spider_get_sys_tables(
        table_tables, &db_name, &table_name, &mem_root)) ||
      (error_num = spider_get_sys_tables_connect_info(
        table_tables, &tmp_share, &mem_root)) ||
      (error_num = spider_set_connect_info_default(
        &tmp_share,
#ifdef WITH_PARTITION_STORAGE_ENGINE
        NULL,
        NULL,
#endif
        NULL
      ))
    ) {
      spider_sys_index_end(table_tables);
      spider_close_sys_table(thd, table_tables,
        &open_tables_backup, TRUE);
      spider_free_tmp_share_alloc(&tmp_share);
      free_root(&mem_root, MYF(0));
      DBUG_RETURN(error_num);
    }
    db_name_length = strlen(db_name);
    table_name_length = strlen(table_name);

    if (
      (error_num = spider_set_connect_info_default_db_table(
        &tmp_share,
        db_name,
        db_name_length,
        table_name,
        table_name_length
      )) ||
      (error_num = spider_create_conn_keys(&tmp_share)) ||
/*
      (error_num = spider_db_create_table_names_str(&tmp_share)) ||
*/
      (error_num = spider_create_tmp_dbton_share(&tmp_share))
    ) {
      spider_sys_index_end(table_tables);
      spider_close_sys_table(thd, table_tables,
        &open_tables_backup, TRUE);
      spider_free_tmp_share_alloc(&tmp_share);
      free_root(&mem_root, MYF(0));
      DBUG_RETURN(error_num);
    }

    /* create conn */
    if (
      !(conn = spider_get_conn(
        &tmp_share, 0, tmp_share.conn_keys[0], trx, NULL, FALSE, FALSE,
        SPIDER_CONN_KIND_MYSQL, &error_num))
    ) {
      spider_sys_index_end(table_tables);
      spider_close_sys_table(thd, table_tables,
        &open_tables_backup, TRUE);
      spider_free_tmp_dbton_share(&tmp_share);
      spider_free_tmp_share_alloc(&tmp_share);
      free_root(&mem_root, MYF(0));
      DBUG_RETURN(error_num);
    }
    conn->error_mode &= spider_param_error_read_mode(thd, 0);
    conn->error_mode &= spider_param_error_write_mode(thd, 0);
    pthread_mutex_assert_not_owner(&conn->mta_conn_mutex);
    pthread_mutex_lock(&conn->mta_conn_mutex);
    SPIDER_SET_FILE_POS(&conn->mta_conn_mutex_file_pos);
    conn->need_mon = &mon_val;
    DBUG_ASSERT(!conn->mta_conn_mutex_lock_already);
    DBUG_ASSERT(!conn->mta_conn_mutex_unlock_later);
    conn->mta_conn_mutex_lock_already = TRUE;
    conn->mta_conn_mutex_unlock_later = TRUE;
    if ((error_num = spider_db_before_query(conn, &mon_val)))
    {
      DBUG_ASSERT(conn->mta_conn_mutex_lock_already);
      DBUG_ASSERT(conn->mta_conn_mutex_unlock_later);
      conn->mta_conn_mutex_lock_already = FALSE;
      conn->mta_conn_mutex_unlock_later = FALSE;
      SPIDER_CLEAR_FILE_POS(&conn->mta_conn_mutex_file_pos);
      pthread_mutex_unlock(&conn->mta_conn_mutex);
      spider_sys_index_end(table_tables);
      spider_close_sys_table(thd, table_tables,
        &open_tables_backup, TRUE);
      spider_free_tmp_dbton_share(&tmp_share);
      spider_free_tmp_share_alloc(&tmp_share);
      free_root(&mem_root, MYF(0));
      DBUG_RETURN(error_num);
    }
    DBUG_ASSERT(conn->mta_conn_mutex_lock_already);
    DBUG_ASSERT(conn->mta_conn_mutex_unlock_later);
    conn->mta_conn_mutex_lock_already = FALSE;
    conn->mta_conn_mutex_unlock_later = FALSE;
    SPIDER_CLEAR_FILE_POS(&conn->mta_conn_mutex_file_pos);
    pthread_mutex_unlock(&conn->mta_conn_mutex);

    if (lock && spider_param_use_snapshot_with_flush_tables(thd) == 2)
    {
      if (!(spider = new ha_spider()))
      {
        spider_sys_index_end(table_tables);
        spider_close_sys_table(thd, table_tables,
          &open_tables_backup, TRUE);
        spider_free_tmp_dbton_share(&tmp_share);
        spider_free_tmp_share_alloc(&tmp_share);
        free_root(&mem_root, MYF(0));
        DBUG_RETURN(HA_ERR_OUT_OF_MEM);
      }
      spider->wide_handler->lock_type = TL_READ_NO_INSERT;

      if (!(share = (SPIDER_SHARE *)
        spider_bulk_malloc(spider_current_trx, SPD_MID_OPEN_ALL_TABLES_1, MYF(MY_WME | MY_ZEROFILL),
          &share, (uint) (sizeof(*share)),
          &connect_info,
            (uint) (sizeof(char *) * SPIDER_TMP_SHARE_CHAR_PTR_COUNT),
          &connect_info_length,
            (uint) (sizeof(uint) * SPIDER_TMP_SHARE_UINT_COUNT),
          &long_info, (uint) (sizeof(long) * SPIDER_TMP_SHARE_LONG_COUNT),
          &longlong_info,
            (uint) (sizeof(longlong) * SPIDER_TMP_SHARE_LONGLONG_COUNT),
          &conns, (uint) (sizeof(SPIDER_CONN *)),
          &need_mon, (uint) (sizeof(int)),
          &spider->conn_link_idx, (uint) (sizeof(uint)),
          &spider->conn_can_fo, (uint) (sizeof(uchar)),
          NullS))
      ) {
        delete spider;
        spider_sys_index_end(table_tables);
        spider_close_sys_table(thd, table_tables,
          &open_tables_backup, TRUE);
        spider_free_tmp_dbton_share(&tmp_share);
        spider_free_tmp_share_alloc(&tmp_share);
        free_root(&mem_root, MYF(0));
        DBUG_RETURN(HA_ERR_OUT_OF_MEM);
      }
      memcpy((void*)share, &tmp_share, sizeof(*share));
      spider_set_tmp_share_pointer(share, connect_info,
        connect_info_length, long_info, longlong_info);
      memcpy(connect_info, &tmp_connect_info, sizeof(char *) *
        SPIDER_TMP_SHARE_CHAR_PTR_COUNT);
      memcpy(connect_info_length, &tmp_connect_info_length, sizeof(uint) *
        SPIDER_TMP_SHARE_UINT_COUNT);
      memcpy(long_info, &tmp_long, sizeof(long) * SPIDER_TMP_SHARE_LONG_COUNT);
      memcpy(longlong_info, &tmp_longlong, sizeof(longlong) *
        SPIDER_TMP_SHARE_LONGLONG_COUNT);
      spider->share = share;
      spider->wide_handler->trx = trx;
      spider->conns = conns;
      spider->need_mons = need_mon;
      spider->conn_link_idx[0] = 0;
      spider->conn_can_fo[0] = 0;
      if ((error_num = spider_create_tmp_dbton_handler(spider)))
      {
        spider_free(trx, share, MYF(0));
        delete spider;
        spider_sys_index_end(table_tables);
        spider_close_sys_table(thd, table_tables,
          &open_tables_backup, TRUE);
        spider_free_tmp_dbton_share(&tmp_share);
        spider_free_tmp_share_alloc(&tmp_share);
        free_root(&mem_root, MYF(0));
        DBUG_RETURN(error_num);
      }

      /* create another conn */
      if (
        (!(conn = spider_get_conn(
        &tmp_share, 0, tmp_share.conn_keys[0], trx, spider, TRUE, FALSE,
        SPIDER_CONN_KIND_MYSQL, &error_num)))
      ) {
        spider_free_tmp_dbton_handler(spider);
        spider_free(trx, share, MYF(0));
        delete spider;
        spider_sys_index_end(table_tables);
        spider_close_sys_table(thd, table_tables,
          &open_tables_backup, TRUE);
        spider_free_tmp_dbton_share(&tmp_share);
        spider_free_tmp_share_alloc(&tmp_share);
        free_root(&mem_root, MYF(0));
        DBUG_RETURN(error_num);
      }
      conn->error_mode &= spider_param_error_read_mode(thd, 0);
      conn->error_mode &= spider_param_error_write_mode(thd, 0);

      spider->next = NULL;
      if (conn->another_ha_last)
      {
        ((ha_spider*) conn->another_ha_last)->next = spider;
      } else {
        conn->another_ha_first = (void*) spider;
      }
      conn->another_ha_last = (void*) spider;

      int appended = 0;
      if ((error_num = spider->dbton_handler[conn->dbton_id]->
        append_lock_tables_list(conn, 0, &appended)))
      {
        spider_free_tmp_dbton_handler(spider);
        spider_free(trx, share, MYF(0));
        delete spider;
        spider_sys_index_end(table_tables);
        spider_close_sys_table(thd, table_tables,
          &open_tables_backup, TRUE);
        spider_free_tmp_dbton_share(&tmp_share);
        spider_free_tmp_share_alloc(&tmp_share);
        free_root(&mem_root, MYF(0));
        DBUG_RETURN(error_num);
      }
    } else {
      spider_free_tmp_dbton_share(&tmp_share);
      spider_free_tmp_share_alloc(&tmp_share);
    }
    error_num = spider_sys_index_next(table_tables);
  } while (error_num == 0);
  free_root(&mem_root, MYF(0));

  spider_sys_index_end(table_tables);
  spider_close_sys_table(thd, table_tables,
    &open_tables_backup, TRUE);
  DBUG_RETURN(0);
}

bool spider_flush_logs(
  handlerton *hton
) {
  int error_num;
  THD* thd = current_thd;
  SPIDER_TRX *trx;
  DBUG_ENTER("spider_flush_logs");

  if (!(trx = spider_get_trx(thd, TRUE, &error_num)))
  {
    my_errno = error_num;
    DBUG_RETURN(TRUE);
  }
  if (
    spider_param_use_flash_logs(trx->thd) &&
    (
      !trx->trx_consistent_snapshot ||
      !spider_param_use_all_conns_snapshot(trx->thd) ||
      !spider_param_use_snapshot_with_flush_tables(trx->thd)
    )
  ) {
    if (
      (error_num = spider_open_all_tables(trx, FALSE)) ||
      (error_num = spider_trx_all_flush_logs(trx))
    ) {
      my_errno = error_num;
      DBUG_RETURN(TRUE);
    }
  }

  DBUG_RETURN(FALSE);
}

handler* spider_create_handler(
  handlerton *hton,
  TABLE_SHARE *table, 
  MEM_ROOT *mem_root
) {
  DBUG_ENTER("spider_create_handler");
  DBUG_RETURN(new (mem_root) ha_spider(hton, table));
}

int spider_close_connection(
  handlerton* hton,
  THD* thd
) {
  int roop_count = 0;
  SPIDER_CONN *conn;
  SPIDER_TRX *trx;
  DBUG_ENTER("spider_close_connection");
  if (!(trx = (SPIDER_TRX*) thd_get_ha_data(thd, spider_hton_ptr)))
    DBUG_RETURN(0); /* transaction is not started */

  trx->tmp_spider->conns = &conn;
  while ((conn = (SPIDER_CONN*) my_hash_element(&trx->trx_conn_hash,
    roop_count)))
  {
    SPIDER_BACKUP_DASTATUS;
    DBUG_PRINT("info",("spider conn->table_lock=%d", conn->table_lock));
    if (conn->table_lock > 0)
    {
      if (!conn->trx_start)
        conn->disable_reconnect = FALSE;
      if (conn->table_lock != 2)
      {
        spider_db_unlock_tables(trx->tmp_spider, 0);
      }
      conn->table_lock = 0;
    }
    roop_count++;
    SPIDER_CONN_RESTORE_DASTATUS;
  }

  spider_rollback(spider_hton_ptr, thd, TRUE);
  spider_free_trx(trx, TRUE, false);

  DBUG_RETURN(0);
}

void spider_drop_database(
  handlerton *hton,
  char* path
) {
  DBUG_ENTER("spider_drop_database");
  DBUG_VOID_RETURN;
}

bool spider_show_status(
  handlerton *hton,
  THD *thd, 
  stat_print_fn *stat_print,
  enum ha_stat_type stat_type
) {
  DBUG_ENTER("spider_show_status");
  switch (stat_type) {
    case HA_ENGINE_STATUS:
    default:
      DBUG_RETURN(FALSE);
  }
}

int spider_db_done(
  void *p
) {
  int roop_count;
  THD *tmp_thd;
  SPIDER_CONN *conn;
  SPIDER_INIT_ERROR_TABLE *spider_init_error_table;
  SPIDER_TABLE_MON_LIST *table_mon_list;
  SPIDER_LGTM_TBLHND_SHARE *lgtm_tblhnd_share;
  DBUG_ENTER("spider_db_done");

  for (roop_count = SPIDER_DBTON_SIZE - 1; roop_count >= 0; roop_count--)
  {
    if (spider_dbton[roop_count].deinit)
    {
      spider_dbton[roop_count].deinit();
    }
  }

#ifndef WITHOUT_SPIDER_BG_SEARCH
  for (roop_count = spider_param_table_crd_thread_count() - 1;
    roop_count >= 0; roop_count--)
  {
    spider_free_crd_threads(&spider_table_crd_threads[roop_count]);
  }
  for (roop_count = spider_param_table_sts_thread_count() - 1;
    roop_count >= 0; roop_count--)
  {
    spider_free_sts_threads(&spider_table_sts_threads[roop_count]);
  }
  spider_free(NULL, spider_table_sts_threads, MYF(0));
#endif

  for (roop_count = spider_param_udf_table_mon_mutex_count() - 1;
    roop_count >= 0; roop_count--)
  {
    while ((table_mon_list = (SPIDER_TABLE_MON_LIST *) my_hash_element(
      &spider_udf_table_mon_list_hash[roop_count], 0)))
    {
#ifdef HASH_UPDATE_WITH_HASH_VALUE
      my_hash_delete_with_hash_value(
        &spider_udf_table_mon_list_hash[roop_count],
        table_mon_list->key_hash_value, (uchar*) table_mon_list);
#else
      my_hash_delete(&spider_udf_table_mon_list_hash[roop_count],
        (uchar*) table_mon_list);
#endif
      spider_ping_table_free_mon_list(table_mon_list);
    }
    spider_free_mem_calc(spider_current_trx,
      spider_udf_table_mon_list_hash_id,
      spider_udf_table_mon_list_hash[roop_count].array.max_element *
      spider_udf_table_mon_list_hash[roop_count].array.size_of_element);
    my_hash_free(&spider_udf_table_mon_list_hash[roop_count]);
  }
  for (roop_count = spider_param_udf_table_mon_mutex_count() - 1;
    roop_count >= 0; roop_count--)
    pthread_cond_destroy(&spider_udf_table_mon_conds[roop_count]);
  for (roop_count = spider_param_udf_table_mon_mutex_count() - 1;
    roop_count >= 0; roop_count--)
    pthread_mutex_destroy(&spider_udf_table_mon_mutexes[roop_count]);
  spider_free(NULL, spider_udf_table_mon_mutexes, MYF(0));

  pthread_mutex_lock(&spider_allocated_thds_mutex);
  while ((tmp_thd = (THD *) my_hash_element(&spider_allocated_thds, 0)))
  {
    SPIDER_TRX *trx = (SPIDER_TRX *)
                      thd_get_ha_data(tmp_thd, spider_hton_ptr);
    if (trx)
    {
      DBUG_ASSERT(tmp_thd == trx->thd);
      spider_free_trx(trx, FALSE);
      thd_set_ha_data(tmp_thd, spider_hton_ptr, NULL);
    }
    else
      my_hash_delete(&spider_allocated_thds, (uchar *) tmp_thd);
  }
  pthread_mutex_unlock(&spider_allocated_thds_mutex);

  pthread_mutex_lock(&spider_conn_mutex);
  while ((conn = (SPIDER_CONN*) my_hash_element(&spider_open_connections, 0)))
  {
#ifdef HASH_UPDATE_WITH_HASH_VALUE
    my_hash_delete_with_hash_value(&spider_open_connections,
      conn->conn_key_hash_value, (uchar*) conn);
#else
    my_hash_delete(&spider_open_connections, (uchar*) conn);
#endif
    spider_free_conn(conn);
  }
  pthread_mutex_unlock(&spider_conn_mutex);
  pthread_mutex_lock(&spider_lgtm_tblhnd_share_mutex);
  while ((lgtm_tblhnd_share = (SPIDER_LGTM_TBLHND_SHARE*) my_hash_element(
    &spider_lgtm_tblhnd_share_hash, 0)))
  {
    spider_free_lgtm_tblhnd_share_alloc(lgtm_tblhnd_share, TRUE);
  }
  pthread_mutex_unlock(&spider_lgtm_tblhnd_share_mutex);
  spider_free_mem_calc(spider_current_trx,
    spider_mon_table_cache_id,
    spider_mon_table_cache.max_element *
    spider_mon_table_cache.size_of_element);
  delete_dynamic(&spider_mon_table_cache);
  spider_free_mem_calc(spider_current_trx,
    spider_allocated_thds_id,
    spider_allocated_thds.array.max_element *
    spider_allocated_thds.array.size_of_element);
  my_hash_free(&spider_allocated_thds);
  spider_free_mem_calc(spider_current_trx,
    spider_open_connections_id,
    spider_open_connections.array.max_element *
    spider_open_connections.array.size_of_element);
  my_hash_free(&spider_open_connections);
  my_hash_free(&spider_ipport_conns);
  spider_free_mem_calc(spider_current_trx,
    spider_lgtm_tblhnd_share_hash_id,
    spider_lgtm_tblhnd_share_hash.array.max_element *
    spider_lgtm_tblhnd_share_hash.array.size_of_element);
  my_hash_free(&spider_lgtm_tblhnd_share_hash);
#ifdef WITH_PARTITION_STORAGE_ENGINE
  spider_free_mem_calc(spider_current_trx,
    spider_open_wide_share_id,
    spider_open_wide_share.array.max_element *
    spider_open_wide_share.array.size_of_element);
  my_hash_free(&spider_open_wide_share);
#endif
  pthread_mutex_lock(&spider_init_error_tbl_mutex);
  while ((spider_init_error_table = (SPIDER_INIT_ERROR_TABLE*)
    my_hash_element(&spider_init_error_tables, 0)))
  {
#ifdef HASH_UPDATE_WITH_HASH_VALUE
    my_hash_delete_with_hash_value(&spider_init_error_tables,
      spider_init_error_table->table_name_hash_value,
      (uchar*) spider_init_error_table);
#else
    my_hash_delete(&spider_init_error_tables,
      (uchar*) spider_init_error_table);
#endif
    spider_free(NULL, spider_init_error_table, MYF(0));
  }
  pthread_mutex_unlock(&spider_init_error_tbl_mutex);
  spider_free_mem_calc(spider_current_trx,
    spider_init_error_tables_id,
    spider_init_error_tables.array.max_element *
    spider_init_error_tables.array.size_of_element);
  my_hash_free(&spider_init_error_tables);
  spider_free_mem_calc(spider_current_trx,
    spider_open_tables_id,
    spider_open_tables.array.max_element *
    spider_open_tables.array.size_of_element);
  my_hash_free(&spider_open_tables);
  pthread_mutex_destroy(&spider_mem_calc_mutex);
  pthread_mutex_destroy(&spider_mon_table_cache_mutex);
  pthread_mutex_destroy(&spider_allocated_thds_mutex);
  pthread_mutex_destroy(&spider_open_conn_mutex);
  pthread_mutex_destroy(&spider_conn_mutex);
  pthread_mutex_destroy(&spider_lgtm_tblhnd_share_mutex);
#ifdef WITH_PARTITION_STORAGE_ENGINE
  pthread_mutex_destroy(&spider_wide_share_mutex);
#endif
  pthread_mutex_destroy(&spider_init_error_tbl_mutex);
  pthread_mutex_destroy(&spider_conn_id_mutex);
  pthread_mutex_destroy(&spider_ipport_conn_mutex);
  pthread_mutex_destroy(&spider_thread_id_mutex);
  pthread_mutex_destroy(&spider_tbl_mutex);
#ifndef WITHOUT_SPIDER_BG_SEARCH
  pthread_attr_destroy(&spider_pt_attr);
#endif

  spider_hton_ptr= NULL;
  for (roop_count = 0; roop_count < SPIDER_MEM_CALC_LIST_NUM; roop_count++)
  {
    if (spider_alloc_func_name[roop_count])
      DBUG_PRINT("info",("spider %d %s %s %lu %llu %lld %llu %llu %s",
        roop_count,
        spider_alloc_func_name[roop_count],
        spider_alloc_file_name[roop_count],
        spider_alloc_line_no[roop_count],
        spider_total_alloc_mem[roop_count],
        spider_current_alloc_mem[roop_count],
        spider_alloc_mem_count[roop_count],
        spider_free_mem_count[roop_count],
        spider_current_alloc_mem[roop_count] ? "NG" : "OK"
      ));
  }

  DBUG_RETURN(0);
}

int spider_panic(
  handlerton *hton,
  ha_panic_function type
) {
  DBUG_ENTER("spider_panic");
  DBUG_RETURN(0);
}

/*
  Create or fix the system tables. See spd_init_query.h for the details.
*/
bool spider_init_system_tables()
{
  DBUG_ENTER("spider_init_system_tables");

  MYSQL *mysql= mysql_init(NULL);
  if (!mysql)
  {
    DBUG_RETURN(TRUE);
  }

  if (!mysql_real_connect_local(mysql))
  {
    mysql_close(mysql);
    DBUG_RETURN(TRUE);
  }

  const int size= sizeof(spider_init_queries) / sizeof(spider_init_queries[0]);
  for (int i= 0; i < size; i++)
  {
    const LEX_STRING *query= &spider_init_queries[i];
    if (mysql_real_query(mysql, query->str, query->length))
    {
      fprintf(stderr,
              "[ERROR] SPIDER plugin initialization failed at '%s' by '%s'\n",
              query->str, mysql_error(mysql));

      mysql_close(mysql);
      DBUG_RETURN(TRUE);
    }

    if (MYSQL_RES *res= mysql_store_result(mysql))
    {
      mysql_free_result(res);
    }
  }

  mysql_close(mysql);

  DBUG_RETURN(FALSE);
}

int spider_db_init(
  void *p
) {
  int error_num = HA_ERR_OUT_OF_MEM, roop_count;
  uint dbton_id = 0;
  uchar addr[6];
  handlerton *spider_hton = (handlerton *)p;
  DBUG_ENTER("spider_db_init");

  spider_mon_table_cache_version= 0;
  spider_mon_table_cache_version_req= 1;
  spider_conn_id= 1;
  spider_conn_mutex_id= 0;
  UTC = 0;
  spider_thread_id = 1;
  const LEX_CSTRING aria_name={STRING_WITH_LEN("Aria")};
  if (!plugin_is_ready(&aria_name, MYSQL_STORAGE_ENGINE_PLUGIN))
    DBUG_RETURN(HA_ERR_RETRY_INIT);

  spider_hton_ptr = spider_hton;

  spider_hton->flags = HTON_TEMPORARY_NOT_SUPPORTED;
#ifdef HTON_CAN_READ_CONNECT_STRING_IN_PARTITION
  spider_hton->flags |= HTON_CAN_READ_CONNECT_STRING_IN_PARTITION;
#endif
  spider_hton->panic = spider_panic;
  spider_hton->close_connection = spider_close_connection;
  spider_hton->start_consistent_snapshot = spider_start_consistent_snapshot;
  spider_hton->flush_logs = spider_flush_logs;
  spider_hton->commit = spider_commit;
  spider_hton->rollback = spider_rollback;
#ifdef SPIDER_HAS_DISCOVER_TABLE_STRUCTURE
  spider_hton->discover_table_structure = spider_discover_table_structure;
#endif
  if (spider_param_support_xa())
  {
    spider_hton->prepare = spider_xa_prepare;
    spider_hton->recover = spider_xa_recover;
    spider_hton->commit_by_xid = spider_xa_commit_by_xid;
    spider_hton->rollback_by_xid = spider_xa_rollback_by_xid;
  }
  spider_hton->create = spider_create_handler;
  spider_hton->drop_database = spider_drop_database;
  spider_hton->show_status = spider_show_status;
#ifdef SPIDER_HAS_GROUP_BY_HANDLER
  spider_hton->create_group_by = spider_create_group_by_handler;
#endif

  if (my_gethwaddr((uchar *) addr))
  {
    my_printf_error(ER_SPIDER_CANT_NUM, ER_SPIDER_CANT_STR1, MYF(ME_WARNING),
      "get hardware address with error ", errno);
    bzero(addr,6);
  }
  spider_unique_id.str = spider_unique_id_buf;
  spider_unique_id.length = my_sprintf(spider_unique_id_buf,
    (spider_unique_id_buf, "-%02x%02x%02x%02x%02x%02x-%lx-",
      addr[0], addr[1], addr[2], addr[3], addr[4], addr[5], (ulong) getpid()));

  memset(&spider_alloc_func_name, 0, sizeof(spider_alloc_func_name));
  memset(&spider_alloc_file_name, 0, sizeof(spider_alloc_file_name));
  memset(&spider_alloc_line_no, 0, sizeof(spider_alloc_line_no));
  memset(&spider_total_alloc_mem, 0, sizeof(spider_total_alloc_mem));
  memset(&spider_current_alloc_mem, 0, sizeof(spider_current_alloc_mem));
  memset(&spider_alloc_mem_count, 0, sizeof(spider_alloc_mem_count));
  memset(&spider_free_mem_count, 0, sizeof(spider_free_mem_count));

#ifndef SPIDER_HAS_NEXT_THREAD_ID
  spd_db_att_thread_id = &thread_id;
#endif
#ifdef SPIDER_XID_USES_xid_cache_iterate
#else
#ifdef XID_CACHE_IS_SPLITTED
  spd_db_att_xid_cache_split_num = &opt_xid_cache_split_num;
  spd_db_att_LOCK_xid_cache = LOCK_xid_cache;
  spd_db_att_xid_cache = xid_cache;
#else
  spd_db_att_LOCK_xid_cache = &LOCK_xid_cache;
  spd_db_att_xid_cache = &xid_cache;
#endif
#endif
  spd_charset_utf8mb3_bin = &my_charset_utf8mb3_bin;
  spd_defaults_extra_file = &my_defaults_extra_file;
  spd_defaults_file = &my_defaults_file;
  spd_mysqld_unix_port = (const char **) &mysqld_unix_port;
  spd_mysqld_port = &mysqld_port;
  spd_abort_loop = &abort_loop;
  spd_tz_system = my_tz_SYSTEM;

#ifdef HAVE_PSI_INTERFACE
  init_spider_psi_keys();
#endif

#ifndef WITHOUT_SPIDER_BG_SEARCH
  if (pthread_attr_init(&spider_pt_attr))
    goto error_pt_attr_init;
/*
  if (pthread_attr_setdetachstate(&spider_pt_attr, PTHREAD_CREATE_DETACHED))
    goto error_pt_attr_setstate;
*/
#endif

  if (mysql_mutex_init(spd_key_mutex_tbl,
    &spider_tbl_mutex, MY_MUTEX_INIT_FAST))
    goto error_tbl_mutex_init;
  if (mysql_mutex_init(spd_key_thread_id,
    &spider_thread_id_mutex, MY_MUTEX_INIT_FAST))
    goto error_thread_id_mutex_init;
  if (mysql_mutex_init(spd_key_conn_id,
    &spider_conn_id_mutex, MY_MUTEX_INIT_FAST))
    goto error_conn_id_mutex_init;
  if (mysql_mutex_init(spd_key_mutex_ipport_count,
    &spider_ipport_conn_mutex, MY_MUTEX_INIT_FAST))
    goto error_ipport_count_mutex_init;

  if (mysql_mutex_init(spd_key_mutex_init_error_tbl,
    &spider_init_error_tbl_mutex, MY_MUTEX_INIT_FAST))
    goto error_init_error_tbl_mutex_init;

#ifdef WITH_PARTITION_STORAGE_ENGINE
  if (mysql_mutex_init(spd_key_mutex_wide_share,
    &spider_wide_share_mutex, MY_MUTEX_INIT_FAST))
    goto error_wide_share_mutex_init;

#endif
  if (mysql_mutex_init(spd_key_mutex_lgtm_tblhnd_share,
    &spider_lgtm_tblhnd_share_mutex, MY_MUTEX_INIT_FAST))
    goto error_lgtm_tblhnd_share_mutex_init;

  if (mysql_mutex_init(spd_key_mutex_conn,
    &spider_conn_mutex, MY_MUTEX_INIT_FAST))
    goto error_conn_mutex_init;

  if (mysql_mutex_init(spd_key_mutex_open_conn,
    &spider_open_conn_mutex, MY_MUTEX_INIT_FAST))
    goto error_open_conn_mutex_init;

  if (mysql_mutex_init(spd_key_mutex_allocated_thds,
    &spider_allocated_thds_mutex, MY_MUTEX_INIT_FAST))
    goto error_allocated_thds_mutex_init;

  if (mysql_mutex_init(spd_key_mutex_mon_table_cache,
    &spider_mon_table_cache_mutex, MY_MUTEX_INIT_FAST))
    goto error_mon_table_cache_mutex_init;

  if (mysql_mutex_init(spd_key_mutex_mem_calc,
    &spider_mem_calc_mutex, MY_MUTEX_INIT_FAST))
    goto error_mem_calc_mutex_init;

  if (my_hash_init(PSI_INSTRUMENT_ME, &spider_open_tables, spd_charset_utf8mb3_bin, 32, 0, 0,
                   (my_hash_get_key) spider_tbl_get_key, 0, 0))
    goto error_open_tables_hash_init;

  spider_alloc_calc_mem_init(spider_open_tables, SPD_MID_DB_INIT_1);
  spider_alloc_calc_mem(NULL,
    spider_open_tables,
    spider_open_tables.array.max_element *
    spider_open_tables.array.size_of_element);
  if (my_hash_init(PSI_INSTRUMENT_ME, &spider_init_error_tables, spd_charset_utf8mb3_bin, 32, 0, 0,
                   (my_hash_get_key) spider_tbl_get_key, 0, 0))
    goto error_init_error_tables_hash_init;

  spider_alloc_calc_mem_init(spider_init_error_tables, SPD_MID_DB_INIT_2);
  spider_alloc_calc_mem(NULL,
    spider_init_error_tables,
    spider_init_error_tables.array.max_element *
    spider_init_error_tables.array.size_of_element);
#ifdef WITH_PARTITION_STORAGE_ENGINE
  if(
    my_hash_init(PSI_INSTRUMENT_ME, &spider_open_wide_share, spd_charset_utf8mb3_bin, 32, 0, 0,
                   (my_hash_get_key) spider_wide_share_get_key, 0, 0)
  )
    goto error_open_wide_share_hash_init;

  spider_alloc_calc_mem_init(spider_open_wide_share, SPD_MID_DB_INIT_3);
  spider_alloc_calc_mem(NULL,
    spider_open_wide_share,
    spider_open_wide_share.array.max_element *
    spider_open_wide_share.array.size_of_element);
#endif
  if (my_hash_init(PSI_INSTRUMENT_ME, &spider_lgtm_tblhnd_share_hash,
                   spd_charset_utf8mb3_bin, 32, 0, 0,
                   (my_hash_get_key) spider_lgtm_tblhnd_share_hash_get_key, 0, 0))
    goto error_lgtm_tblhnd_share_hash_init;

  spider_alloc_calc_mem_init(spider_lgtm_tblhnd_share_hash, SPD_MID_DB_INIT_4);
  spider_alloc_calc_mem(NULL,
    spider_lgtm_tblhnd_share_hash,
    spider_lgtm_tblhnd_share_hash.array.max_element *
    spider_lgtm_tblhnd_share_hash.array.size_of_element);
  if (my_hash_init(PSI_INSTRUMENT_ME, &spider_open_connections, spd_charset_utf8mb3_bin, 32, 0, 0,
                   (my_hash_get_key) spider_conn_get_key, 0, 0))
    goto error_open_connections_hash_init;

  if (my_hash_init(PSI_INSTRUMENT_ME, &spider_ipport_conns, spd_charset_utf8mb3_bin, 32, 0, 0,
                   (my_hash_get_key) spider_ipport_conn_get_key,
                   spider_free_ipport_conn, 0))
      goto error_ipport_conn__hash_init;

  spider_alloc_calc_mem_init(spider_open_connections, SPD_MID_DB_INIT_5);
  spider_alloc_calc_mem(NULL,
    spider_open_connections,
    spider_open_connections.array.max_element *
    spider_open_connections.array.size_of_element);
  if (my_hash_init(PSI_INSTRUMENT_ME, &spider_allocated_thds, spd_charset_utf8mb3_bin, 32, 0, 0,
                   (my_hash_get_key) spider_allocated_thds_get_key, 0, 0))
    goto error_allocated_thds_hash_init;

  spider_alloc_calc_mem_init(spider_allocated_thds, SPD_MID_DB_INIT_8);
  spider_alloc_calc_mem(NULL,
    spider_allocated_thds,
    spider_allocated_thds.array.max_element *
    spider_allocated_thds.array.size_of_element);

  if (SPD_INIT_DYNAMIC_ARRAY2(&spider_mon_table_cache, sizeof(SPIDER_MON_KEY),
      NULL, 64, 64, MYF(MY_WME)))
    goto error_mon_table_cache_array_init;

  spider_alloc_calc_mem_init(spider_mon_table_cache, SPD_MID_DB_INIT_9);
  spider_alloc_calc_mem(NULL,
    spider_mon_table_cache,
    spider_mon_table_cache.max_element *
    spider_mon_table_cache.size_of_element);

  if (!(spider_udf_table_mon_mutexes = (pthread_mutex_t *)
    spider_bulk_malloc(NULL, SPD_MID_DB_INIT_10, MYF(MY_WME | MY_ZEROFILL),
      &spider_udf_table_mon_mutexes, (uint) (sizeof(pthread_mutex_t) *
        spider_param_udf_table_mon_mutex_count()),
      &spider_udf_table_mon_conds, (uint) (sizeof(pthread_cond_t) *
        spider_param_udf_table_mon_mutex_count()),
      &spider_udf_table_mon_list_hash, (uint) (sizeof(HASH) *
        spider_param_udf_table_mon_mutex_count()),
      NullS))
  )
    goto error_alloc_mon_mutxes;

  for (roop_count = 0;
    roop_count < (int) spider_param_udf_table_mon_mutex_count();
    roop_count++)
  {
    if (mysql_mutex_init(spd_key_mutex_udf_table_mon,
      &spider_udf_table_mon_mutexes[roop_count], MY_MUTEX_INIT_FAST))
      goto error_init_udf_table_mon_mutex;
  }
  for (roop_count = 0;
    roop_count < (int) spider_param_udf_table_mon_mutex_count();
    roop_count++)
  {
    if (mysql_cond_init(spd_key_cond_udf_table_mon,
      &spider_udf_table_mon_conds[roop_count], NULL))
      goto error_init_udf_table_mon_cond;
  }
  for (roop_count = 0;
    roop_count < (int) spider_param_udf_table_mon_mutex_count();
    roop_count++)
  {
    if (my_hash_init(PSI_INSTRUMENT_ME, &spider_udf_table_mon_list_hash[roop_count],
      spd_charset_utf8mb3_bin, 32, 0, 0,
      (my_hash_get_key) spider_udf_tbl_mon_list_key, 0, 0))
      goto error_init_udf_table_mon_list_hash;

    spider_alloc_calc_mem_init(spider_udf_table_mon_list_hash, SPD_MID_DB_INIT_11);
    spider_alloc_calc_mem(NULL,
      spider_udf_table_mon_list_hash,
      spider_udf_table_mon_list_hash[roop_count].array.max_element *
      spider_udf_table_mon_list_hash[roop_count].array.size_of_element);
  }

  if (spider_init_system_tables())
  {
    goto error_system_table_creation;
  }

#ifndef WITHOUT_SPIDER_BG_SEARCH
  if (!(spider_table_sts_threads = (SPIDER_THREAD *)
    spider_bulk_malloc(NULL, SPD_MID_DB_INIT_12, MYF(MY_WME | MY_ZEROFILL),
      &spider_table_sts_threads, (uint) (sizeof(SPIDER_THREAD) *
        spider_param_table_sts_thread_count()),
      &spider_table_crd_threads, (uint) (sizeof(SPIDER_THREAD) *
        spider_param_table_crd_thread_count()),
      NullS))
  )
    goto error_alloc_table_sts_crd_threads;

  for (roop_count = 0;
    roop_count < (int) spider_param_table_sts_thread_count();
    roop_count++)
  {
    if ((error_num = spider_create_sts_threads(&spider_table_sts_threads[roop_count])))
    {
      goto error_init_table_sts_threads;
    }
  }
  for (roop_count = 0;
    roop_count < (int) spider_param_table_crd_thread_count();
    roop_count++)
  {
    if ((error_num = spider_create_crd_threads(&spider_table_crd_threads[roop_count])))
    {
      goto error_init_table_crd_threads;
    }
  }
#endif

  spider_dbton_mysql.dbton_id = dbton_id;
  spider_dbton_mysql.db_util->dbton_id = dbton_id;
  spider_dbton[dbton_id] = spider_dbton_mysql;
  ++dbton_id;
  spider_dbton_mariadb.dbton_id = dbton_id;
  spider_dbton_mariadb.db_util->dbton_id = dbton_id;
  spider_dbton[dbton_id] = spider_dbton_mariadb;
  ++dbton_id;
#ifdef HAVE_ORACLE_OCI
  spider_dbton_oracle.dbton_id = dbton_id;
  spider_dbton_oracle.db_util->dbton_id = dbton_id;
  spider_dbton[dbton_id] = spider_dbton_oracle;
  ++dbton_id;
#endif
  for (roop_count = 0; roop_count < SPIDER_DBTON_SIZE; roop_count++)
  {
    if (spider_dbton[roop_count].init)
    {
      if ((error_num = spider_dbton[roop_count].init()))
      {
        goto error_init_dbton;
      }
    }
  }
  DBUG_RETURN(0);

#ifndef WITHOUT_SPIDER_BG_SEARCH
error_init_dbton:
  for (roop_count--; roop_count >= 0; roop_count--)
  {
    if (spider_dbton[roop_count].deinit)
    {
      spider_dbton[roop_count].deinit();
    }
  }
  roop_count = spider_param_table_crd_thread_count() - 1;
error_init_table_crd_threads:
  for (; roop_count >= 0; roop_count--)
  {
    spider_free_crd_threads(&spider_table_crd_threads[roop_count]);
  }
  roop_count = spider_param_table_sts_thread_count() - 1;
error_init_table_sts_threads:
  for (; roop_count >= 0; roop_count--)
  {
    spider_free_sts_threads(&spider_table_sts_threads[roop_count]);
  }
error_alloc_table_sts_crd_threads:
  spider_free(NULL, spider_table_sts_threads, MYF(0));
#endif
error_system_table_creation:
  roop_count = spider_param_udf_table_mon_mutex_count() - 1;
error_init_udf_table_mon_list_hash:
  for (; roop_count >= 0; roop_count--)
  {
    spider_free_mem_calc(NULL,
      spider_udf_table_mon_list_hash_id,
      spider_udf_table_mon_list_hash[roop_count].array.max_element *
      spider_udf_table_mon_list_hash[roop_count].array.size_of_element);
    my_hash_free(&spider_udf_table_mon_list_hash[roop_count]);
  }
  roop_count = spider_param_udf_table_mon_mutex_count() - 1;
error_init_udf_table_mon_cond:
  for (; roop_count >= 0; roop_count--)
    pthread_cond_destroy(&spider_udf_table_mon_conds[roop_count]);
  roop_count = spider_param_udf_table_mon_mutex_count() - 1;
error_init_udf_table_mon_mutex:
  for (; roop_count >= 0; roop_count--)
    pthread_mutex_destroy(&spider_udf_table_mon_mutexes[roop_count]);
  spider_free(NULL, spider_udf_table_mon_mutexes, MYF(0));
error_alloc_mon_mutxes:
  spider_free_mem_calc(NULL,
    spider_mon_table_cache_id,
    spider_mon_table_cache.max_element *
    spider_mon_table_cache.size_of_element);
  delete_dynamic(&spider_mon_table_cache);
error_mon_table_cache_array_init:
  spider_free_mem_calc(NULL,
    spider_allocated_thds_id,
    spider_allocated_thds.array.max_element *
    spider_allocated_thds.array.size_of_element);
  my_hash_free(&spider_allocated_thds);
error_allocated_thds_hash_init:
  my_hash_free(&spider_ipport_conns);
error_ipport_conn__hash_init:
  spider_free_mem_calc(NULL,
    spider_open_connections_id,
    spider_open_connections.array.max_element *
    spider_open_connections.array.size_of_element);
  my_hash_free(&spider_open_connections);
error_open_connections_hash_init:
  spider_free_mem_calc(NULL,
    spider_lgtm_tblhnd_share_hash_id,
    spider_lgtm_tblhnd_share_hash.array.max_element *
    spider_lgtm_tblhnd_share_hash.array.size_of_element);
  my_hash_free(&spider_lgtm_tblhnd_share_hash);
error_lgtm_tblhnd_share_hash_init:
#ifdef WITH_PARTITION_STORAGE_ENGINE
  spider_free_mem_calc(NULL,
    spider_open_wide_share_id,
    spider_open_wide_share.array.max_element *
    spider_open_wide_share.array.size_of_element);
  my_hash_free(&spider_open_wide_share);
error_open_wide_share_hash_init:
#endif
  spider_free_mem_calc(NULL,
    spider_init_error_tables_id,
    spider_init_error_tables.array.max_element *
    spider_init_error_tables.array.size_of_element);
  my_hash_free(&spider_init_error_tables);
error_init_error_tables_hash_init:
  spider_free_mem_calc(NULL,
    spider_open_tables_id,
    spider_open_tables.array.max_element *
    spider_open_tables.array.size_of_element);
  my_hash_free(&spider_open_tables);
error_open_tables_hash_init:
  pthread_mutex_destroy(&spider_mem_calc_mutex);
error_mem_calc_mutex_init:
  pthread_mutex_destroy(&spider_mon_table_cache_mutex);
error_mon_table_cache_mutex_init:
  pthread_mutex_destroy(&spider_allocated_thds_mutex);
error_allocated_thds_mutex_init:
  pthread_mutex_destroy(&spider_open_conn_mutex);
error_open_conn_mutex_init:
  pthread_mutex_destroy(&spider_conn_mutex);
error_conn_mutex_init:
  pthread_mutex_destroy(&spider_lgtm_tblhnd_share_mutex);
error_lgtm_tblhnd_share_mutex_init:
#ifdef WITH_PARTITION_STORAGE_ENGINE
  pthread_mutex_destroy(&spider_wide_share_mutex);
error_wide_share_mutex_init:
#endif
  pthread_mutex_destroy(&spider_init_error_tbl_mutex);
error_init_error_tbl_mutex_init:
  pthread_mutex_destroy(&spider_ipport_conn_mutex);
error_ipport_count_mutex_init:
  pthread_mutex_destroy(&spider_conn_id_mutex);
error_conn_id_mutex_init:
  pthread_mutex_destroy(&spider_thread_id_mutex);
error_thread_id_mutex_init:
  pthread_mutex_destroy(&spider_tbl_mutex);
error_tbl_mutex_init:
#ifndef WITHOUT_SPIDER_BG_SEARCH
/*
error_pt_attr_setstate:
*/
  pthread_attr_destroy(&spider_pt_attr);
error_pt_attr_init:
#endif
  spider_hton_ptr= NULL;
  DBUG_RETURN(error_num);
}

char *spider_create_string(
  const char *str,
  uint length
) {
  char *res;
  DBUG_ENTER("spider_create_string");
  if (!(res = (char*) spider_malloc(spider_current_trx, SPD_MID_CREATE_STRING_1, length + 1,
    MYF(MY_WME))))
    DBUG_RETURN(NULL);
  memcpy(res, str, length);
  res[length] = '\0';
  DBUG_RETURN(res);
}

char *spider_create_table_name_string(
  const char *table_name,
  const char *part_name,
  const char *sub_name
) {
  char *res, *tmp;
  uint length = strlen(table_name);
  DBUG_ENTER("spider_create_table_name_string");
  if (part_name)
  {
    length += sizeof("#P#") - 1 + strlen(part_name);
    if (sub_name)
      length += sizeof("#SP#") - 1 + strlen(sub_name);
  }
  if (!(res = (char*) spider_malloc(spider_current_trx, SPD_MID_CREATE_TABLE_NAME_STRING_1, length + 1,
    MYF(MY_WME))))
    DBUG_RETURN(NULL);
  tmp = strmov(res, table_name);
  if (part_name)
  {
    tmp = strmov(tmp, "#P#");
    tmp = strmov(tmp, part_name);
    if (sub_name)
    {
      tmp = strmov(tmp, "#SP#");
      tmp = strmov(tmp, sub_name);
    }
  }
  DBUG_RETURN(res);
}

#ifdef WITH_PARTITION_STORAGE_ENGINE
void spider_get_partition_info(
  const char *table_name,
  uint table_name_length,
  const TABLE_SHARE *table_share,
  partition_info *part_info,
  partition_element **part_elem,
  partition_element **sub_elem
) {
  char tmp_name[FN_REFLEN + 1];
  partition_element *tmp_part_elem = NULL, *tmp_sub_elem = NULL;
  bool tmp_flg = FALSE, tmp_find_flg = FALSE;
  DBUG_ENTER("spider_get_partition_info");
  *part_elem = NULL;
  *sub_elem = NULL;
  if (!part_info)
    DBUG_VOID_RETURN;

  if (!memcmp(table_name + table_name_length - 5, "#TMP#", 5))
    tmp_flg = TRUE;

  DBUG_PRINT("info",("spider table_name=%s", table_name));
  List_iterator<partition_element> part_it(part_info->partitions);
  while ((*part_elem = part_it++))
  {
    if ((*part_elem)->subpartitions.elements)
    {
      List_iterator<partition_element> sub_it((*part_elem)->subpartitions);
      while ((*sub_elem = sub_it++))
      {
        if (SPIDER_create_subpartition_name(
          tmp_name, FN_REFLEN + 1, table_share->path.str,
          (*part_elem)->partition_name, (*sub_elem)->partition_name,
          NORMAL_PART_NAME))
        {
          DBUG_VOID_RETURN;
        }
        DBUG_PRINT("info",("spider tmp_name=%s", tmp_name));
        if (!memcmp(table_name, tmp_name, table_name_length + 1))
          DBUG_VOID_RETURN;
        if (
          tmp_flg &&
          *(tmp_name + table_name_length - 5) == '\0' &&
          !memcmp(table_name, tmp_name, table_name_length - 5)
        ) {
          tmp_part_elem = *part_elem;
          tmp_sub_elem = *sub_elem;
          tmp_flg = FALSE;
          tmp_find_flg = TRUE;
        }
      }
    } else {
      if (SPIDER_create_partition_name(
        tmp_name, FN_REFLEN + 1, table_share->path.str,
        (*part_elem)->partition_name, NORMAL_PART_NAME, TRUE))
      {
        DBUG_VOID_RETURN;
      }
      DBUG_PRINT("info",("spider tmp_name=%s", tmp_name));
      if (!memcmp(table_name, tmp_name, table_name_length + 1))
        DBUG_VOID_RETURN;
      if (
        tmp_flg &&
        *(tmp_name + table_name_length - 5) == '\0' &&
        !memcmp(table_name, tmp_name, table_name_length - 5)
      ) {
        tmp_part_elem = *part_elem;
        tmp_flg = FALSE;
        tmp_find_flg = TRUE;
      }
    }
  }
  if (tmp_find_flg)
  {
    *part_elem = tmp_part_elem;
    *sub_elem = tmp_sub_elem;
    DBUG_PRINT("info",("spider tmp find"));
    DBUG_VOID_RETURN;
  }
  *part_elem = NULL;
  *sub_elem = NULL;
  DBUG_PRINT("info",("spider no hit"));
  DBUG_VOID_RETURN;
}
#endif

int spider_get_sts(
  SPIDER_SHARE *share,
  int link_idx,
  time_t tmp_time,
  ha_spider *spider,
  double sts_interval,
  int sts_mode,
#ifdef WITH_PARTITION_STORAGE_ENGINE
  int sts_sync,
#endif
  int sts_sync_level,
  uint flag
) {
#ifdef WITH_PARTITION_STORAGE_ENGINE
  int get_type;
#endif
  int error_num = 0;
  DBUG_ENTER("spider_get_sts");

#ifdef WITH_PARTITION_STORAGE_ENGINE
  if (
    sts_sync == 0
  ) {
    /* get */
    get_type = 1;
  } else if (
    !share->wide_share->sts_init
  ) {
    pthread_mutex_lock(&share->wide_share->sts_mutex);
    if (!share->wide_share->sts_init)
    {
      /* get after mutex_lock */
      get_type = 2;
    } else {
      pthread_mutex_unlock(&share->wide_share->sts_mutex);
      /* copy */
      get_type = 0;
    }
  } else if (
    difftime(share->sts_get_time, share->wide_share->sts_get_time) <
      sts_interval
  ) {
    /* copy */
    get_type = 0;
  } else if (
    !pthread_mutex_trylock(&share->wide_share->sts_mutex)
  ) {
    /* get after mutex_trylock */
    get_type = 3;
  } else {
    /* copy */
    get_type = 0;
  }
#endif

#ifdef WITH_PARTITION_STORAGE_ENGINE
  if (get_type == 0)
      spider_copy_sts_to_share(share, share->wide_share);
  else {
#endif
      error_num = spider_db_show_table_status(spider, link_idx, sts_mode, flag);
#ifdef WITH_PARTITION_STORAGE_ENGINE
  }
#endif
#ifdef WITH_PARTITION_STORAGE_ENGINE
  if (get_type >= 2)
    pthread_mutex_unlock(&share->wide_share->sts_mutex);
#endif
  if (error_num)
  {
#ifdef WITH_PARTITION_STORAGE_ENGINE
    SPIDER_PARTITION_HANDLER *partition_handler =
      spider->partition_handler;
    if (
      !share->wide_share->sts_init &&
      sts_sync >= sts_sync_level &&
      get_type > 1 &&
      partition_handler &&
      partition_handler->handlers &&
      partition_handler->handlers[0] == spider
    ) {
      int roop_count;
      ha_spider *tmp_spider;
      SPIDER_SHARE *tmp_share;
      double tmp_sts_interval;
      int tmp_sts_mode;
      int tmp_sts_sync;
      THD *thd = spider->wide_handler->trx->thd;
      for (roop_count = 1;
        roop_count < (int) partition_handler->no_parts;
        roop_count++)
      {
        tmp_spider =
          (ha_spider *) partition_handler->handlers[roop_count];
        tmp_share = tmp_spider->share;
        tmp_sts_interval = spider_param_sts_interval(thd, share->sts_interval);
        tmp_sts_mode = spider_param_sts_mode(thd, share->sts_mode);
        tmp_sts_sync = spider_param_sts_sync(thd, share->sts_sync);
        spider_get_sts(tmp_share, tmp_spider->search_link_idx,
          tmp_time, tmp_spider, tmp_sts_interval, tmp_sts_mode, tmp_sts_sync,
          1, flag);
        if (share->wide_share->sts_init)
        {
          error_num = 0;
          thd->clear_error();
          get_type = 0;
          spider_copy_sts_to_share(share, share->wide_share);
          break;
        }
      }
    }
    if (error_num)
#endif
      DBUG_RETURN(error_num);
  }
#ifdef WITH_PARTITION_STORAGE_ENGINE
  if (sts_sync >= sts_sync_level && get_type > 0)
  {
    spider_copy_sts_to_wide_share(share->wide_share, share);
    share->wide_share->sts_get_time = tmp_time;
    share->wide_share->sts_init = TRUE;
  }
#endif
  share->sts_get_time = tmp_time;
  share->sts_init = TRUE;
  DBUG_RETURN(0);
}

int spider_get_crd(
  SPIDER_SHARE *share,
  int link_idx,
  time_t tmp_time,
  ha_spider *spider,
  TABLE *table,
  double crd_interval,
  int crd_mode,
#ifdef WITH_PARTITION_STORAGE_ENGINE
  int crd_sync,
#endif
  int crd_sync_level
) {
#ifdef WITH_PARTITION_STORAGE_ENGINE
  int get_type;
#endif
  int error_num = 0;
  DBUG_ENTER("spider_get_crd");

#ifdef WITH_PARTITION_STORAGE_ENGINE
  if (
    crd_sync == 0
  ) {
    /* get */
    get_type = 1;
  } else if (
    !share->wide_share->crd_init
  ) {
    pthread_mutex_lock(&share->wide_share->crd_mutex);
    if (!share->wide_share->crd_init)
    {
      /* get after mutex_lock */
      get_type = 2;
    } else {
      pthread_mutex_unlock(&share->wide_share->crd_mutex);
      /* copy */
      get_type = 0;
    }
  } else if (
    difftime(share->crd_get_time, share->wide_share->crd_get_time) <
      crd_interval
  ) {
    /* copy */
    get_type = 0;
  } else if (
    !pthread_mutex_trylock(&share->wide_share->crd_mutex)
  ) {
    /* get after mutex_trylock */
    get_type = 3;
  } else {
    /* copy */
    get_type = 0;
  }
#endif
#ifdef WITH_PARTITION_STORAGE_ENGINE
  if (get_type == 0)
      spider_copy_crd_to_share(share, share->wide_share,
                               table->s->fields);
  else {
#endif
      error_num = spider_db_show_index(spider, link_idx, table, crd_mode);
#ifdef WITH_PARTITION_STORAGE_ENGINE
  }
#endif
#ifdef WITH_PARTITION_STORAGE_ENGINE
  if (get_type >= 2)
    pthread_mutex_unlock(&share->wide_share->crd_mutex);
#endif
  if (error_num)
  {
#ifdef WITH_PARTITION_STORAGE_ENGINE
    SPIDER_PARTITION_HANDLER *partition_handler =
      spider->partition_handler;
    if (
      !share->wide_share->crd_init &&
      crd_sync >= crd_sync_level &&
      get_type > 1 &&
      partition_handler &&
      partition_handler->handlers &&
      partition_handler->handlers[0] == spider
    ) {
      int roop_count;
      ha_spider *tmp_spider;
      SPIDER_SHARE *tmp_share;
      double tmp_crd_interval;
      int tmp_crd_mode;
      int tmp_crd_sync;
      THD *thd = spider->wide_handler->trx->thd;
      for (roop_count = 1;
        roop_count < (int) partition_handler->no_parts;
        roop_count++)
      {
        tmp_spider =
          (ha_spider *) partition_handler->handlers[roop_count];
        tmp_share = tmp_spider->share;
        tmp_crd_interval = spider_param_crd_interval(thd, share->crd_interval);
        tmp_crd_mode = spider_param_crd_mode(thd, share->crd_mode);
        tmp_crd_sync = spider_param_crd_sync(thd, share->crd_sync);
        spider_get_crd(tmp_share, tmp_spider->search_link_idx,
          tmp_time, tmp_spider, table, tmp_crd_interval, tmp_crd_mode,
          tmp_crd_sync, 1);
        if (share->wide_share->crd_init)
        {
          error_num = 0;
          thd->clear_error();
          get_type = 0;
          spider_copy_crd_to_share(share, share->wide_share,
            table->s->fields);
          break;
        }
      }
    }
    if (error_num)
#endif
      DBUG_RETURN(error_num);
  }
#ifdef WITH_PARTITION_STORAGE_ENGINE
  if (crd_sync >= crd_sync_level && get_type > 0)
  {
    spider_copy_crd_to_wide_share(share->wide_share, share,
      table->s->fields);
    share->wide_share->crd_get_time = tmp_time;
    share->wide_share->crd_init = TRUE;
  }
#endif
  share->crd_get_time = tmp_time;
  share->crd_init = TRUE;
  DBUG_RETURN(0);
}

void spider_set_result_list_param(
  ha_spider *spider
) {
  SPIDER_RESULT_LIST *result_list = &spider->result_list;
  SPIDER_SHARE *share = spider->share;
  THD *thd = spider->wide_handler->trx->thd;
  DBUG_ENTER("spider_set_result_list_param");
  result_list->internal_offset =
    spider_param_internal_offset(thd, share->internal_offset);
  result_list->internal_limit =
#ifdef INFO_KIND_FORCE_LIMIT_BEGIN
    spider->wide_handler->info_limit < 9223372036854775807LL ?
    spider->wide_handler->info_limit :
#endif
    spider_param_internal_limit(thd, share->internal_limit);
  result_list->split_read = spider_split_read_param(spider);
  if (spider->support_multi_split_read_sql())
  {
    result_list->multi_split_read =
      spider_param_multi_split_read(thd, share->multi_split_read);
  } else {
    result_list->multi_split_read = 1;
  }
  result_list->max_order =
    spider_param_max_order(thd, share->max_order);
  result_list->quick_mode =
    spider_param_quick_mode(thd, share->quick_mode);
  result_list->quick_page_size =
    spider_param_quick_page_size(thd, share->quick_page_size);
  result_list->quick_page_byte =
    spider_param_quick_page_byte(thd, share->quick_page_byte);
  result_list->low_mem_read =
    spider_param_low_mem_read(thd, share->low_mem_read);
  DBUG_VOID_RETURN;
}

SPIDER_INIT_ERROR_TABLE *spider_get_init_error_table(
  SPIDER_TRX *trx,
  SPIDER_SHARE *share,
  bool create
) {
  SPIDER_INIT_ERROR_TABLE *spider_init_error_table;
  char *tmp_name;
  DBUG_ENTER("spider_get_init_error_table");
  pthread_mutex_lock(&spider_init_error_tbl_mutex);
#ifdef SPIDER_HAS_HASH_VALUE_TYPE
  if (!(spider_init_error_table = (SPIDER_INIT_ERROR_TABLE *)
    my_hash_search_using_hash_value(
    &spider_init_error_tables, share->table_name_hash_value,
    (uchar*) share->table_name, share->table_name_length)))
#else
  if (!(spider_init_error_table = (SPIDER_INIT_ERROR_TABLE *) my_hash_search(
    &spider_init_error_tables,
    (uchar*) share->table_name, share->table_name_length)))
#endif
  {
    if (!create)
    {
      pthread_mutex_unlock(&spider_init_error_tbl_mutex);
      DBUG_RETURN(NULL);
    }
    if (!(spider_init_error_table = (SPIDER_INIT_ERROR_TABLE *)
      spider_bulk_malloc(spider_current_trx, SPD_MID_GET_INIT_ERROR_TABLE_1, MYF(MY_WME | MY_ZEROFILL),
        &spider_init_error_table, (uint) (sizeof(*spider_init_error_table)),
        &tmp_name, (uint) (share->table_name_length + 1),
        NullS))
    ) {
      pthread_mutex_unlock(&spider_init_error_tbl_mutex);
      DBUG_RETURN(NULL);
    }
    memcpy(tmp_name, share->table_name, share->table_name_length);
    spider_init_error_table->table_name = tmp_name;
    spider_init_error_table->table_name_length = share->table_name_length;
#ifdef SPIDER_HAS_HASH_VALUE_TYPE
    spider_init_error_table->table_name_hash_value =
      share->table_name_hash_value;
#endif
    uint old_elements = spider_init_error_tables.array.max_element;
#ifdef HASH_UPDATE_WITH_HASH_VALUE
    if (my_hash_insert_with_hash_value(&spider_init_error_tables,
      share->table_name_hash_value, (uchar*) spider_init_error_table))
#else
    if (my_hash_insert(&spider_init_error_tables,
      (uchar*) spider_init_error_table))
#endif
    {
      spider_free(trx, spider_init_error_table, MYF(0));
      pthread_mutex_unlock(&spider_init_error_tbl_mutex);
      DBUG_RETURN(NULL);
    }
    if (spider_init_error_tables.array.max_element > old_elements)
    {
      spider_alloc_calc_mem(spider_current_trx,
        spider_init_error_tables,
        (spider_init_error_tables.array.max_element - old_elements) *
        spider_init_error_tables.array.size_of_element);
    }
  }
  pthread_mutex_unlock(&spider_init_error_tbl_mutex);
  DBUG_RETURN(spider_init_error_table);
}

void spider_delete_init_error_table(
  const char *name
) {
  SPIDER_INIT_ERROR_TABLE *spider_init_error_table;
  uint length = strlen(name);
#ifdef SPIDER_HAS_HASH_VALUE_TYPE
  my_hash_value_type hash_value = my_calc_hash(&spider_open_tables,
    (uchar*) name, length);
#endif
  DBUG_ENTER("spider_delete_init_error_table");
  pthread_mutex_lock(&spider_init_error_tbl_mutex);
#ifdef SPIDER_HAS_HASH_VALUE_TYPE
  if ((spider_init_error_table = (SPIDER_INIT_ERROR_TABLE *)
    my_hash_search_using_hash_value(&spider_init_error_tables, hash_value,
      (uchar*) name, length)))
#else
  if ((spider_init_error_table = (SPIDER_INIT_ERROR_TABLE *) my_hash_search(
    &spider_init_error_tables, (uchar*) name, length)))
#endif
  {
#ifdef HASH_UPDATE_WITH_HASH_VALUE
    my_hash_delete_with_hash_value(&spider_init_error_tables,
      spider_init_error_table->table_name_hash_value,
      (uchar*) spider_init_error_table);
#else
    my_hash_delete(&spider_init_error_tables,
      (uchar*) spider_init_error_table);
#endif
    spider_free(spider_current_trx, spider_init_error_table, MYF(0));
  }
  pthread_mutex_unlock(&spider_init_error_tbl_mutex);
  DBUG_VOID_RETURN;
}

bool spider_check_pk_update(
  TABLE *table
) {
  int roop_count;
  TABLE_SHARE *table_share = table->s;
  KEY *key_info;
  KEY_PART_INFO *key_part;
  DBUG_ENTER("spider_check_pk_update");
  if (table_share->primary_key == MAX_KEY)
    DBUG_RETURN(FALSE);

  key_info = &table_share->key_info[table_share->primary_key];
  key_part = key_info->key_part;
  for (roop_count = 0;
    roop_count < (int) spider_user_defined_key_parts(key_info); roop_count++)
  {
    if (bitmap_is_set(table->write_set,
      key_part[roop_count].field->field_index))
      DBUG_RETURN(TRUE);
  }
  DBUG_RETURN(FALSE);
}


void spider_set_tmp_share_pointer(
  SPIDER_SHARE *tmp_share,
  char **tmp_connect_info,
  uint *tmp_connect_info_length,
  long *tmp_long,
  longlong *tmp_longlong
) {
  DBUG_ENTER("spider_set_tmp_share_pointer");
  tmp_share->link_count = 1;
  tmp_share->all_link_count = 1;
  tmp_share->server_names = &tmp_connect_info[0];
  tmp_share->tgt_table_names = &tmp_connect_info[1];
  tmp_share->tgt_dbs = &tmp_connect_info[2];
  tmp_share->tgt_hosts = &tmp_connect_info[3];
  tmp_share->tgt_usernames = &tmp_connect_info[4];
  tmp_share->tgt_passwords = &tmp_connect_info[5];
  tmp_share->tgt_sockets = &tmp_connect_info[6];
  tmp_share->tgt_wrappers = &tmp_connect_info[7];
  tmp_share->tgt_ssl_cas = &tmp_connect_info[8];
  tmp_share->tgt_ssl_capaths = &tmp_connect_info[9];
  tmp_share->tgt_ssl_certs = &tmp_connect_info[10];
  tmp_share->tgt_ssl_ciphers = &tmp_connect_info[11];
  tmp_share->tgt_ssl_keys = &tmp_connect_info[12];
  tmp_share->tgt_default_files = &tmp_connect_info[13];
  tmp_share->tgt_default_groups = &tmp_connect_info[14];
  tmp_share->tgt_dsns = &tmp_connect_info[15];
  tmp_share->tgt_pk_names = &tmp_connect_info[16];
  tmp_share->tgt_sequence_names = &tmp_connect_info[17];
  tmp_share->static_link_ids = &tmp_connect_info[18];
  tmp_share->tgt_ports = &tmp_long[0];
  tmp_share->tgt_ssl_vscs = &tmp_long[1];
  tmp_share->link_statuses = &tmp_long[2];
  tmp_share->monitoring_binlog_pos_at_failing = &tmp_long[3];
  tmp_share->monitoring_flag = &tmp_long[4];
  tmp_share->monitoring_kind = &tmp_long[5];
#ifndef WITHOUT_SPIDER_BG_SEARCH
  tmp_share->monitoring_bg_flag = &tmp_long[6];
  tmp_share->monitoring_bg_kind = &tmp_long[7];
#endif
  tmp_share->use_handlers = &tmp_long[13];
  tmp_share->connect_timeouts = &tmp_long[14];
  tmp_long[13] = -1;
  tmp_share->net_read_timeouts = &tmp_long[15];
  tmp_long[14] = -1;
  tmp_share->net_write_timeouts = &tmp_long[16];
  tmp_long[15] = -1;
  tmp_share->access_balances = &tmp_long[17];
  tmp_share->bka_table_name_types = &tmp_long[18];
  tmp_share->strict_group_bys = &tmp_long[19];
  tmp_share->monitoring_limit = &tmp_longlong[0];
  tmp_share->monitoring_sid = &tmp_longlong[1];
#ifndef WITHOUT_SPIDER_BG_SEARCH
  tmp_share->monitoring_bg_interval = &tmp_longlong[2];
#endif
  tmp_share->server_names_lengths = &tmp_connect_info_length[0];
  tmp_share->tgt_table_names_lengths = &tmp_connect_info_length[1];
  tmp_share->tgt_dbs_lengths = &tmp_connect_info_length[2];
  tmp_share->tgt_hosts_lengths = &tmp_connect_info_length[3];
  tmp_share->tgt_usernames_lengths = &tmp_connect_info_length[4];
  tmp_share->tgt_passwords_lengths = &tmp_connect_info_length[5];
  tmp_share->tgt_sockets_lengths = &tmp_connect_info_length[6];
  tmp_share->tgt_wrappers_lengths = &tmp_connect_info_length[7];
  tmp_share->tgt_ssl_cas_lengths = &tmp_connect_info_length[8];
  tmp_share->tgt_ssl_capaths_lengths = &tmp_connect_info_length[9];
  tmp_share->tgt_ssl_certs_lengths = &tmp_connect_info_length[10];
  tmp_share->tgt_ssl_ciphers_lengths = &tmp_connect_info_length[11];
  tmp_share->tgt_ssl_keys_lengths = &tmp_connect_info_length[12];
  tmp_share->tgt_default_files_lengths = &tmp_connect_info_length[13];
  tmp_share->tgt_default_groups_lengths = &tmp_connect_info_length[14];
  tmp_share->tgt_dsns_lengths = &tmp_connect_info_length[15];
  tmp_share->tgt_pk_names_lengths = &tmp_connect_info_length[16];
  tmp_share->tgt_sequence_names_lengths = &tmp_connect_info_length[17];
  tmp_share->static_link_ids_lengths = &tmp_connect_info_length[18];
  tmp_share->server_names_length = 1;
  tmp_share->tgt_table_names_length = 1;
  tmp_share->tgt_dbs_length = 1;
  tmp_share->tgt_hosts_length = 1;
  tmp_share->tgt_usernames_length = 1;
  tmp_share->tgt_passwords_length = 1;
  tmp_share->tgt_sockets_length = 1;
  tmp_share->tgt_wrappers_length = 1;
  tmp_share->tgt_ssl_cas_length = 1;
  tmp_share->tgt_ssl_capaths_length = 1;
  tmp_share->tgt_ssl_certs_length = 1;
  tmp_share->tgt_ssl_ciphers_length = 1;
  tmp_share->tgt_ssl_keys_length = 1;
  tmp_share->tgt_default_files_length = 1;
  tmp_share->tgt_default_groups_length = 1;
  tmp_share->tgt_dsns_length = 1;
  tmp_share->tgt_pk_names_length = 1;
  tmp_share->tgt_sequence_names_length = 1;
  tmp_share->static_link_ids_length = 1;
  tmp_share->tgt_ports_length = 1;
  tmp_share->tgt_ssl_vscs_length = 1;
  tmp_share->link_statuses_length = 1;
  tmp_share->monitoring_binlog_pos_at_failing_length = 1;
  tmp_share->monitoring_flag_length = 1;
  tmp_share->monitoring_kind_length = 1;
#ifndef WITHOUT_SPIDER_BG_SEARCH
  tmp_share->monitoring_bg_flag_length = 1;
  tmp_share->monitoring_bg_kind_length = 1;
#endif
  tmp_share->monitoring_limit_length = 1;
  tmp_share->monitoring_sid_length = 1;
#ifndef WITHOUT_SPIDER_BG_SEARCH
  tmp_share->monitoring_bg_interval_length = 1;
#endif
  tmp_share->use_handlers_length = 1;
  tmp_share->connect_timeouts_length = 1;
  tmp_share->net_read_timeouts_length = 1;
  tmp_share->net_write_timeouts_length = 1;
  tmp_share->access_balances_length = 1;
  tmp_share->bka_table_name_types_length = 1;
  tmp_share->strict_group_bys_length = 1;

#ifndef WITHOUT_SPIDER_BG_SEARCH
  tmp_share->monitoring_bg_flag[0] = -1;
  tmp_share->monitoring_bg_kind[0] = -1;
#endif
  tmp_share->monitoring_binlog_pos_at_failing[0] = -1;
  tmp_share->monitoring_flag[0] = -1;
  tmp_share->monitoring_kind[0] = -1;
#ifndef WITHOUT_SPIDER_BG_SEARCH
  tmp_share->monitoring_bg_interval[0] = -1;
#endif
  tmp_share->monitoring_limit[0] = -1;
  tmp_share->monitoring_sid[0] = -1;
  tmp_share->bka_engine = NULL;
  tmp_share->use_dbton_count = 0;
  DBUG_VOID_RETURN;
}

int spider_create_tmp_dbton_share(
  SPIDER_SHARE *tmp_share
) {
  int error_num;
  uint dbton_id = tmp_share->use_dbton_ids[0];
  DBUG_ENTER("spider_create_tmp_dbton_share");
  if (!(tmp_share->dbton_share[dbton_id] =
    spider_dbton[dbton_id].create_db_share(tmp_share)))
  {
    DBUG_RETURN(HA_ERR_OUT_OF_MEM);
  }
  if ((error_num = tmp_share->dbton_share[dbton_id]->init()))
  {
    delete tmp_share->dbton_share[dbton_id];
    tmp_share->dbton_share[dbton_id] = NULL;
    DBUG_RETURN(error_num);
  }
  DBUG_RETURN(0);
}

void spider_free_tmp_dbton_share(
  SPIDER_SHARE *tmp_share
) {
  uint dbton_id = tmp_share->use_dbton_ids[0];
  DBUG_ENTER("spider_free_tmp_dbton_share");
  if (tmp_share->dbton_share[dbton_id])
  {
    delete tmp_share->dbton_share[dbton_id];
    tmp_share->dbton_share[dbton_id] = NULL;
  }
  DBUG_VOID_RETURN;
}

int spider_create_tmp_dbton_handler(
  ha_spider *tmp_spider
) {
  int error_num;
  SPIDER_SHARE *tmp_share = tmp_spider->share;
  uint dbton_id = tmp_share->use_dbton_ids[0];
  DBUG_ENTER("spider_create_tmp_dbton_handler");
  if (!(tmp_spider->dbton_handler[dbton_id] =
    spider_dbton[dbton_id].create_db_handler(tmp_spider,
    tmp_share->dbton_share[dbton_id])))
  {
    DBUG_RETURN(HA_ERR_OUT_OF_MEM);
  }
  if ((error_num = tmp_spider->dbton_handler[dbton_id]->init()))
  {
    delete tmp_spider->dbton_handler[dbton_id];
    tmp_spider->dbton_handler[dbton_id] = NULL;
    DBUG_RETURN(error_num);
  }
  DBUG_RETURN(0);
}

void spider_free_tmp_dbton_handler(
  ha_spider *tmp_spider
) {
  SPIDER_SHARE *tmp_share = tmp_spider->share;
  uint dbton_id = tmp_share->use_dbton_ids[0];
  DBUG_ENTER("spider_create_tmp_dbton_handler");
  if (tmp_spider->dbton_handler[dbton_id])
  {
    delete tmp_spider->dbton_handler[dbton_id];
    tmp_spider->dbton_handler[dbton_id] = NULL;
  }
  DBUG_VOID_RETURN;
}

TABLE_LIST *spider_get_parent_table_list(
  ha_spider *spider
) {
  TABLE *table = spider->get_table();
  DBUG_ENTER("spider_get_parent_table_list");
  DBUG_RETURN(table->pos_in_table_list);
}

List<Index_hint> *spider_get_index_hints(
  ha_spider *spider
  ) {
    TABLE_LIST *table_list = spider_get_parent_table_list(spider);
    DBUG_ENTER("spider_get_index_hint");
    if (table_list)
    {
      DBUG_RETURN(table_list->index_hints);
    }
    DBUG_RETURN(NULL);
}


st_select_lex *spider_get_select_lex(
  ha_spider *spider
) {
  TABLE_LIST *table_list = spider_get_parent_table_list(spider);
  DBUG_ENTER("spider_get_select_lex");
  if (table_list)
  {
    DBUG_RETURN(table_list->select_lex);
  }
  DBUG_RETURN(NULL);
}

void spider_get_select_limit_from_select_lex(
  st_select_lex *select_lex,
  longlong *select_limit,
  longlong *offset_limit
) {
  DBUG_ENTER("spider_get_select_limit_from_select_lex");
  *select_limit = 9223372036854775807LL;
  *offset_limit = 0;
  if (select_lex && select_lex->explicit_limit)
  {
    *select_limit = select_lex->select_limit ?
      select_lex->select_limit->val_int() : 0;
    *offset_limit = select_lex->offset_limit ?
      select_lex->offset_limit->val_int() : 0;
  }
  DBUG_VOID_RETURN;
}

void spider_get_select_limit(
  ha_spider *spider,
  st_select_lex **select_lex,
  longlong *select_limit,
  longlong *offset_limit
) {
  DBUG_ENTER("spider_get_select_limit");
  *select_lex = spider_get_select_lex(spider);
  spider_get_select_limit_from_select_lex(
    *select_lex, select_limit, offset_limit);
  DBUG_VOID_RETURN;
}

longlong spider_split_read_param(
  ha_spider *spider
) {
  SPIDER_SHARE *share = spider->share;
  SPIDER_RESULT_LIST *result_list = &spider->result_list;
  THD *thd = spider->wide_handler->trx->thd;
  st_select_lex *select_lex;
  longlong select_limit;
  longlong offset_limit;
  double semi_split_read;
  longlong split_read;
  DBUG_ENTER("spider_split_read_param");
  result_list->set_split_read_count = 1;
#ifdef INFO_KIND_FORCE_LIMIT_BEGIN
  if (spider->wide_handler->info_limit < 9223372036854775807LL)
  {
    DBUG_PRINT("info",("spider info_limit=%lld",
      spider->wide_handler->info_limit));
    longlong info_limit = spider->wide_handler->info_limit;
    result_list->split_read_base = info_limit;
    result_list->semi_split_read = 0;
    result_list->first_read = info_limit;
    result_list->second_read = info_limit;
    result_list->semi_split_read_base = 0;
    result_list->set_split_read = FALSE;
    DBUG_RETURN(info_limit);
  }
#endif
  if (spider->sql_kinds & SPIDER_SQL_KIND_HANDLER)
  {
    DBUG_RETURN(result_list->semi_split_read_base);
  }
  spider_get_select_limit(spider, &select_lex, &select_limit, &offset_limit);
  DBUG_PRINT("info",("spider result_list->set_split_read=%s", result_list->set_split_read ? "TRUE" : "FALSE"));
  if (!result_list->set_split_read)
  {
    int bulk_update_mode = spider_param_bulk_update_mode(thd,
      share->bulk_update_mode);
    DBUG_PRINT("info",("spider sql_command=%u",
      spider->wide_handler->sql_command));
    DBUG_PRINT("info",("spider bulk_update_mode=%d", bulk_update_mode));
    DBUG_PRINT("info",("spider support_bulk_update_sql=%s",
      spider->support_bulk_update_sql() ? "TRUE" : "FALSE"));
#ifdef SPIDER_HAS_GROUP_BY_HANDLER
    bool inserting =
      (
        spider->wide_handler->sql_command == SQLCOM_INSERT ||
        spider->wide_handler->sql_command == SQLCOM_INSERT_SELECT
      );
#endif
    bool updating =
      (
        spider->wide_handler->sql_command == SQLCOM_UPDATE ||
        spider->wide_handler->sql_command == SQLCOM_UPDATE_MULTI
      );
    bool deleting =
      (
        spider->wide_handler->sql_command == SQLCOM_DELETE ||
        spider->wide_handler->sql_command == SQLCOM_DELETE_MULTI
      );
    bool replacing =
      (
        spider->wide_handler->sql_command == SQLCOM_REPLACE ||
        spider->wide_handler->sql_command == SQLCOM_REPLACE_SELECT
      );
    DBUG_PRINT("info",("spider updating=%s", updating ? "TRUE" : "FALSE"));
    DBUG_PRINT("info",("spider deleting=%s", deleting ? "TRUE" : "FALSE"));
    DBUG_PRINT("info",("spider replacing=%s", replacing ? "TRUE" : "FALSE"));
    TABLE *table = spider->get_table();
    if (
#ifdef SPIDER_HAS_GROUP_BY_HANDLER
      (
        inserting &&
        spider->use_fields
      ) ||
#endif
      replacing ||
      (
        (
          updating ||
          deleting
        ) &&
        (
          bulk_update_mode != 2 ||
          !spider->support_bulk_update_sql() ||
          (
            updating &&
            table->triggers &&
#ifdef HA_CAN_FORCE_BULK_UPDATE
            !(table->file->ha_table_flags() & HA_CAN_FORCE_BULK_UPDATE) &&
#endif
            table->triggers->has_triggers(TRG_EVENT_UPDATE, TRG_ACTION_AFTER)
          ) ||
          (
            deleting &&
            table->triggers &&
#ifdef HA_CAN_FORCE_BULK_DELETE
            !(table->file->ha_table_flags() & HA_CAN_FORCE_BULK_DELETE) &&
#endif
            table->triggers->has_triggers(TRG_EVENT_DELETE, TRG_ACTION_AFTER)
          )
        )
      )
    ) {
      /* This case must select by one shot */
      DBUG_PRINT("info",("spider cancel split read"));
      result_list->split_read_base = 9223372036854775807LL;
      result_list->semi_split_read = 0;
      result_list->semi_split_read_limit = 9223372036854775807LL;
      result_list->first_read = 9223372036854775807LL;
      result_list->second_read = 9223372036854775807LL;
      result_list->semi_split_read_base = 0;
      result_list->set_split_read = TRUE;
      DBUG_RETURN(9223372036854775807LL);
    }
#ifdef SPIDER_HAS_EXPLAIN_QUERY
    Explain_query *explain = thd->lex->explain;
    bool filesort = FALSE;
    if (explain)
    {
      DBUG_PRINT("info",("spider explain=%p", explain));
      Explain_select *explain_select = NULL;
      if (select_lex)
      {
        DBUG_PRINT("info",("spider select_lex=%p", select_lex));
        DBUG_PRINT("info",("spider select_number=%u",
          select_lex->select_number));
        explain_select =
          explain->get_select(select_lex->select_number);
      }
      if (explain_select)
      {
        DBUG_PRINT("info",("spider explain_select=%p", explain_select));
        if (explain_select->using_filesort)
        {
          DBUG_PRINT("info",("spider using filesort"));
          filesort = TRUE;
        }
      }
    }
#endif
    result_list->split_read_base =
      spider_param_split_read(thd, share->split_read);
#ifdef SPIDER_HAS_EXPLAIN_QUERY
    if (filesort)
    {
      result_list->semi_split_read = 0;
      result_list->semi_split_read_limit = 9223372036854775807LL;
    } else {
#endif
      result_list->semi_split_read =
        spider_param_semi_split_read(thd, share->semi_split_read);
      result_list->semi_split_read_limit =
        spider_param_semi_split_read_limit(thd, share->semi_split_read_limit);
#ifdef SPIDER_HAS_EXPLAIN_QUERY
    }
#endif
    result_list->first_read =
      spider_param_first_read(thd, share->first_read);
    result_list->second_read =
      spider_param_second_read(thd, share->second_read);
    result_list->semi_split_read_base = 0;
    result_list->set_split_read = TRUE;
  }
  DBUG_PRINT("info",("spider result_list->semi_split_read=%f", result_list->semi_split_read));
  DBUG_PRINT("info",("spider select_lex->explicit_limit=%d", select_lex ? select_lex->explicit_limit : 0));
  DBUG_PRINT("info",("spider OPTION_FOUND_ROWS=%s", select_lex && (select_lex->options & OPTION_FOUND_ROWS) ? "TRUE" : "FALSE"));
  DBUG_PRINT("info",("spider select_lex->group_list.elements=%u", select_lex ? select_lex->group_list.elements : 0));
  DBUG_PRINT("info",("spider select_lex->with_sum_func=%s", select_lex && select_lex->with_sum_func ? "TRUE" : "FALSE"));
  if (
    result_list->semi_split_read > 0 &&
    select_lex && select_lex->explicit_limit &&
    !(select_lex->options & OPTION_FOUND_ROWS) &&
    !select_lex->group_list.elements &&
    !select_lex->with_sum_func
  ) {
    semi_split_read = result_list->semi_split_read *
      (select_limit + offset_limit);
    DBUG_PRINT("info",("spider semi_split_read=%f", semi_split_read));
    if (semi_split_read >= result_list->semi_split_read_limit)
    {
      result_list->semi_split_read_base = result_list->semi_split_read_limit;
      DBUG_RETURN(result_list->semi_split_read_limit);
    } else {
      split_read = (longlong) semi_split_read;
      if (split_read < 0)
      {
        result_list->semi_split_read_base = result_list->semi_split_read_limit;
        DBUG_RETURN(result_list->semi_split_read_limit);
      } else if (split_read == 0)
      {
        result_list->semi_split_read_base = 1;
        DBUG_RETURN(1);
      } else {
        result_list->semi_split_read_base = split_read;
        DBUG_RETURN(split_read);
      }
    }
  } else if (result_list->first_read > 0)
    DBUG_RETURN(result_list->first_read);
  DBUG_RETURN(result_list->split_read_base);
}

longlong spider_bg_split_read_param(
  ha_spider *spider
) {
  SPIDER_RESULT_LIST *result_list = &spider->result_list;
  DBUG_ENTER("spider_bg_split_read_param");
  if (result_list->semi_split_read_base)
    DBUG_RETURN(result_list->semi_split_read_base);
  DBUG_RETURN(result_list->split_read_base);
}

void spider_first_split_read_param(
  ha_spider *spider
) {
  SPIDER_RESULT_LIST *result_list = &spider->result_list;
  DBUG_ENTER("spider_first_split_read_param");
  if (result_list->semi_split_read_base)
    result_list->split_read = result_list->semi_split_read_base;
  else if (result_list->second_read > 0)
    result_list->split_read = result_list->first_read;
  else
    result_list->split_read = result_list->split_read_base;
  result_list->set_split_read_count = 1;
  DBUG_VOID_RETURN;
}

void spider_next_split_read_param(
  ha_spider *spider
) {
  SPIDER_RESULT_LIST *result_list = &spider->result_list;
  DBUG_ENTER("spider_next_split_read_param");
  if (result_list->semi_split_read_base)
    result_list->split_read = result_list->semi_split_read_base;
  else if (
    result_list->set_split_read_count == 1 &&
    result_list->second_read > 0
  )
    result_list->split_read = result_list->second_read;
  else
    result_list->split_read = result_list->split_read_base;
  result_list->set_split_read_count++;
  DBUG_VOID_RETURN;
}

bool spider_check_direct_order_limit(
  ha_spider *spider
) {
  THD *thd = spider->wide_handler->trx->thd;
  SPIDER_SHARE *share = spider->share;
  st_select_lex *select_lex;
  longlong select_limit;
  longlong offset_limit;
  DBUG_ENTER("spider_check_direct_order_limit");
  if (spider_check_index_merge(spider->get_table(),
    spider_get_select_lex(spider)))
  {
    DBUG_PRINT("info",("spider set use_index_merge"));
    spider->use_index_merge = TRUE;
  }
  DBUG_PRINT("info",("spider SQLCOM_HA_READ=%s",
    (spider->wide_handler->sql_command == SQLCOM_HA_READ) ? "TRUE" : "FALSE"));
  DBUG_PRINT("info",("spider sql_kinds with SPIDER_SQL_KIND_HANDLER=%s",
    (spider->sql_kinds & SPIDER_SQL_KIND_HANDLER) ? "TRUE" : "FALSE"));
  DBUG_PRINT("info",("spider use_index_merge=%s",
    spider->use_index_merge ? "TRUE" : "FALSE"));
  DBUG_PRINT("info",("spider is_clone=%s",
    spider->is_clone ? "TRUE" : "FALSE"));
#ifdef HA_CAN_BULK_ACCESS
  DBUG_PRINT("info",("spider is_bulk_access_clone=%s",
    spider->is_bulk_access_clone ? "TRUE" : "FALSE"));
#endif
  if (
    spider->wide_handler->sql_command != SQLCOM_HA_READ &&
    !spider->use_index_merge &&
#ifdef HA_CAN_BULK_ACCESS
    (!spider->is_clone || spider->is_bulk_access_clone)
#else
    !spider->is_clone
#endif
  ) {
    spider_get_select_limit(spider, &select_lex, &select_limit, &offset_limit);
    bool first_check = TRUE;
    DBUG_PRINT("info",("spider select_lex=%p", select_lex));
    DBUG_PRINT("info",("spider leaf_tables.elements=%u",
      select_lex ? select_lex->leaf_tables.elements : 0));

    if (select_lex && (select_lex->options & SELECT_DISTINCT))
    {
      DBUG_PRINT("info",("spider with distinct"));
      spider->result_list.direct_distinct = TRUE;
    }
#ifdef HANDLER_HAS_DIRECT_AGGREGATE
    spider->result_list.direct_aggregate = spider_param_direct_aggregate(thd);
#endif
    DBUG_PRINT("info",("spider select_limit=%lld", select_limit));
    DBUG_PRINT("info",("spider offset_limit=%lld", offset_limit));
    if (
#ifdef SPIDER_ENGINE_CONDITION_PUSHDOWN_IS_ALWAYS_ON
#else
      !(thd->variables.optimizer_switch &
        OPTIMIZER_SWITCH_ENGINE_CONDITION_PUSHDOWN) ||
#endif
#ifdef SPIDER_NEED_CHECK_CONDITION_AT_CHECKING_DIRECT_ORDER_LIMIT
      !spider->condition ||
#endif
      !select_lex ||
      select_lex->leaf_tables.elements != 1 ||
      select_lex->table_list.elements != 1
    ) {
      DBUG_PRINT("info",("spider first_check is FALSE"));
      first_check = FALSE;
      spider->result_list.direct_distinct = FALSE;
#ifdef HANDLER_HAS_DIRECT_AGGREGATE
      spider->result_list.direct_aggregate = FALSE;
#endif
    } else if (spider_db_append_condition(spider, NULL, 0, TRUE))
    {
      DBUG_PRINT("info",("spider FALSE by condition"));
      first_check = FALSE;
      spider->result_list.direct_distinct = FALSE;
#ifdef HANDLER_HAS_DIRECT_AGGREGATE
      spider->result_list.direct_aggregate = FALSE;
#endif
    } else if (spider->sql_kinds & SPIDER_SQL_KIND_HANDLER)
    {
      DBUG_PRINT("info",("spider sql_kinds with SPIDER_SQL_KIND_HANDLER"));
      spider->result_list.direct_distinct = FALSE;
#ifdef HANDLER_HAS_DIRECT_AGGREGATE
      spider->result_list.direct_aggregate = FALSE;
    } else if (
      !select_lex->group_list.elements &&
      !select_lex->with_sum_func
    ) {
      DBUG_PRINT("info",("spider this SQL is not aggregate SQL"));
      spider->result_list.direct_aggregate = FALSE;
    } else {
      ORDER *group;
      for (group = (ORDER *) select_lex->group_list.first; group;
        group = group->next)
      {
        if (spider->print_item_type((*group->item), NULL, NULL, 0))
        {
          DBUG_PRINT("info",("spider aggregate FALSE by group"));
          spider->result_list.direct_aggregate = FALSE;
          break;
        }
      }
      JOIN *join = select_lex->join;
      Item_sum **item_sum_ptr;
      for (item_sum_ptr = join->sum_funcs; *item_sum_ptr; ++item_sum_ptr)
      {
        if (spider->print_item_type(*item_sum_ptr, NULL, NULL, 0))
        {
          DBUG_PRINT("info",("spider aggregate FALSE by not supported"));
          spider->result_list.direct_aggregate = FALSE;
          break;
        }
      }
      if (!spider_all_part_in_order((ORDER *) select_lex->group_list.first,
        spider->get_table()))
      {
        DBUG_PRINT("info",("spider FALSE by group condition"));
        first_check = FALSE;
        spider->result_list.direct_distinct = FALSE;
      }
#endif
    }

    longlong direct_order_limit = spider_param_direct_order_limit(thd,
      share->direct_order_limit);
    DBUG_PRINT("info",("spider direct_order_limit=%lld", direct_order_limit));
    if (direct_order_limit)
    {
      DBUG_PRINT("info",("spider first_check=%s",
        first_check ? "TRUE" : "FALSE"));
      DBUG_PRINT("info",("spider (select_lex->options & OPTION_FOUND_ROWS)=%s",
        select_lex && (select_lex->options & OPTION_FOUND_ROWS) ? "TRUE" : "FALSE"));
#ifdef HANDLER_HAS_DIRECT_AGGREGATE
      DBUG_PRINT("info",("spider direct_aggregate=%s",
        spider->result_list.direct_aggregate ? "TRUE" : "FALSE"));
#endif
      DBUG_PRINT("info",("spider select_lex->group_list.elements=%u",
        select_lex ? select_lex->group_list.elements : 0));
      DBUG_PRINT("info",("spider select_lex->with_sum_func=%s",
        select_lex && select_lex->with_sum_func ? "TRUE" : "FALSE"));
      DBUG_PRINT("info",("spider select_lex->having=%s",
        select_lex && select_lex->having ? "TRUE" : "FALSE"));
      DBUG_PRINT("info",("spider select_lex->order_list.elements=%u",
        select_lex ? select_lex->order_list.elements : 0));
      if (
        !first_check ||
        !select_lex->explicit_limit ||
        (select_lex->options & OPTION_FOUND_ROWS) ||
        (
#ifdef HANDLER_HAS_DIRECT_AGGREGATE
          !spider->result_list.direct_aggregate &&
#endif
          (
            select_lex->group_list.elements ||
            select_lex->with_sum_func
          )
        ) ||
        select_lex->having ||
        !select_lex->order_list.elements ||
        select_limit > direct_order_limit - offset_limit
      ) {
        DBUG_PRINT("info",("spider FALSE by select_lex"));
        DBUG_RETURN(FALSE);
      }
      ORDER *order;
      for (order = (ORDER *) select_lex->order_list.first; order;
        order = order->next)
      {
        if (spider->print_item_type((*order->item), NULL, NULL, 0))
        {
          DBUG_PRINT("info",("spider FALSE by order"));
          DBUG_RETURN(FALSE);
        }
      }
      DBUG_PRINT("info",("spider TRUE"));
      spider->result_list.internal_limit = select_limit + offset_limit;
      spider->result_list.split_read = select_limit + offset_limit;
      spider->wide_handler->trx->direct_order_limit_count++;
      DBUG_RETURN(TRUE);
    }
  }
  DBUG_PRINT("info",("spider FALSE by parameter"));
  DBUG_RETURN(FALSE);
}

#ifdef HANDLER_HAS_DIRECT_AGGREGATE
bool spider_all_part_in_order(
  ORDER *order,
  TABLE *table
) {
  TABLE_LIST *parent;
  partition_info *part_info;
  Field **part_fields;
  ORDER *ptr;
  Item *item;
  Item_field *item_field;
  DBUG_ENTER("spider_all_part_in_order");
  while (TRUE)
  {
    DBUG_PRINT("info", ("spider table_name = %s", table->s->db.str));
    DBUG_PRINT("info",("spider part_info=%p", table->part_info));
    if ((part_info = table->part_info))
    {
      for (part_fields = part_info->full_part_field_array;
        *part_fields; ++part_fields)
      {
        DBUG_PRINT("info", ("spider part_field = %s",
          SPIDER_field_name_str(*part_fields)));
        for (ptr = order; ptr; ptr = ptr->next)
        {
          item = *ptr->item;
          if (item->type() != Item::FIELD_ITEM)
          {
            continue;
          }
          item_field = (Item_field *) item;
          Field *field = item_field->field;
          if (!field)
          {
            continue;
          }
          DBUG_PRINT("info", ("spider field_name = %s.%s",
            field->table->s->db.str, SPIDER_field_name_str(field)));
          if (*part_fields == spider_field_exchange(table->file, field))
          {
            break;
          }
        }
        if (!ptr)
        {
          DBUG_RETURN(FALSE);
        }
      }
    }
    if (!(parent = table->pos_in_table_list->parent_l))
    {
      break;
    }
    table = parent->table;
  }
  DBUG_RETURN(TRUE);
}

Field *spider_field_exchange(
  handler *handler,
  Field *field
) {
  DBUG_ENTER("spider_field_exchange");
#ifdef HA_CAN_BULK_ACCESS
  if (handler->is_bulk_access_clone)
  {
    handler = handler->pt_clone_source_handler;
  }
#endif
  DBUG_PRINT("info",("spider in field=%p", field));
  DBUG_PRINT("info",("spider in field->table=%p", field->table));
    DBUG_PRINT("info",("spider table=%p", handler->get_table()));
    if (field->table != handler->get_table())
      DBUG_RETURN(NULL);
  DBUG_PRINT("info",("spider out field=%p", field));
  DBUG_RETURN(field);
}
#endif

int spider_set_direct_limit_offset(
  ha_spider *spider
) {
#ifndef SPIDER_ENGINE_CONDITION_PUSHDOWN_IS_ALWAYS_ON
  THD *thd = spider->wide_handler->trx->thd;
#endif
  st_select_lex *select_lex;
  longlong select_limit;
  longlong offset_limit;
  TABLE_LIST *table_list;
  DBUG_ENTER("spider_set_direct_limit_offset");

  if (spider->result_list.direct_limit_offset)
    DBUG_RETURN(TRUE);

  if (
    spider->partition_handler &&
    !spider->wide_handler_owner
  ) {
    if (spider->partition_handler->owner->
      result_list.direct_limit_offset == TRUE)
    {
      spider->result_list.direct_limit_offset = TRUE;
      DBUG_RETURN(TRUE);
    } else {
      DBUG_RETURN(FALSE);
    }
  }

  if (
    spider->wide_handler->sql_command != SQLCOM_SELECT ||
#ifdef HANDLER_HAS_DIRECT_AGGREGATE
    spider->result_list.direct_aggregate ||
#endif
    spider->result_list.direct_order_limit ||
    spider->prev_index_rnd_init != SPD_RND    // must be RND_INIT and not be INDEX_INIT
  )
    DBUG_RETURN(FALSE);

  spider_get_select_limit(spider, &select_lex, &select_limit, &offset_limit);

  // limit and offset is non-zero
  if (!(select_limit && offset_limit))
    DBUG_RETURN(FALSE);

  // more than one table
  if (
    !select_lex ||
    select_lex->table_list.elements != 1
  )
    DBUG_RETURN(FALSE);

  table_list = (TABLE_LIST *) select_lex->table_list.first;
  if (table_list->table->file->partition_ht() != spider_hton_ptr)
  {
    DBUG_PRINT("info",("spider ht1=%u ht2=%u",
      table_list->table->file->partition_ht()->slot,
      spider_hton_ptr->slot
    ));
    DBUG_RETURN(FALSE);
  }

  // contain where
  if (
#ifdef SPIDER_ENGINE_CONDITION_PUSHDOWN_IS_ALWAYS_ON
#else
    !(thd->variables.optimizer_switch &
      OPTIMIZER_SWITCH_ENGINE_CONDITION_PUSHDOWN) ||
#endif
    // conditions is null may be no where condition in rand_init
    spider->wide_handler->condition
  )
    DBUG_RETURN(FALSE);

  // ignore condition like 1=1
#ifdef SPIDER_has_Item_with_subquery
  if (select_lex->where && select_lex->where->with_subquery())
#else
  if (select_lex->where && select_lex->where->with_subselect)
#endif
    DBUG_RETURN(FALSE);

  if (
    select_lex->group_list.elements ||
    select_lex->with_sum_func ||
    select_lex->having ||
    select_lex->order_list.elements
  )
    DBUG_RETURN(FALSE);

  // must not be derived table
  if (SPIDER_get_linkage(select_lex) == DERIVED_TABLE_TYPE)
    DBUG_RETURN(FALSE);

  spider->direct_select_offset = offset_limit;
  spider->direct_current_offset = offset_limit;
  spider->direct_select_limit = select_limit;
  spider->result_list.direct_limit_offset = TRUE;
  DBUG_RETURN(TRUE);
}


bool spider_check_index_merge(
  TABLE *table,
  st_select_lex *select_lex
) {
  uint roop_count;
  JOIN *join;
  DBUG_ENTER("spider_check_index_merge");
  if (!select_lex)
  {
    DBUG_PRINT("info",("spider select_lex is null"));
    DBUG_RETURN(FALSE);
  }
  join = select_lex->join;
  if (!join)
  {
    DBUG_PRINT("info",("spider join is null"));
    DBUG_RETURN(FALSE);
  }
  if (!join->join_tab)
  {
    DBUG_PRINT("info",("spider join->join_tab is null"));
    DBUG_RETURN(FALSE);
  }
  for (roop_count = 0; roop_count < spider_join_table_count(join); ++roop_count)
  {
    JOIN_TAB *join_tab = &join->join_tab[roop_count];
    if (join_tab->table == table)
    {
      DBUG_PRINT("info",("spider join_tab->type=%u", join_tab->type));
      if (
#ifdef SPIDER_HAS_JT_HASH_INDEX_MERGE
        join_tab->type == JT_HASH_INDEX_MERGE ||
#endif
        join_tab->type == JT_INDEX_MERGE
      ) {
        DBUG_RETURN(TRUE);
      }
/*
      DBUG_PRINT("info",("spider join_tab->quick->get_type()=%u",
        join_tab->quick ? join_tab->quick->get_type() : 0));
      if (
        join_tab->quick &&
        join_tab->quick->get_type() == QUICK_SELECT_I::QS_TYPE_INDEX_MERGE
      ) {
        DBUG_RETURN(TRUE);
      }
*/
      DBUG_PRINT("info",("spider join_tab->select->quick->get_type()=%u",
        join_tab->select && join_tab->select->quick ? join_tab->select->quick->get_type() : 0));
      if (
        join_tab->select &&
        join_tab->select->quick &&
        join_tab->select->quick->get_type() == QUICK_SELECT_I::QS_TYPE_INDEX_MERGE
      ) {
        DBUG_RETURN(TRUE);
      }
      break;
    }
  }
  DBUG_RETURN(FALSE);
}

int spider_compare_for_sort(
  SPIDER_SORT *a,
  SPIDER_SORT *b
) {
  DBUG_ENTER("spider_compare_for_sort");
  if (a->sort > b->sort)
    DBUG_RETURN(-1);
  if (a->sort < b->sort)
    DBUG_RETURN(1);
  DBUG_RETURN(0);
}

ulong spider_calc_for_sort(
  uint count,
  ...
) {
  ulong sort = 0;
  va_list args;
  va_start(args, count);
  DBUG_ENTER("spider_calc_for_sort");
  while (count--)
  {
    char *start = va_arg(args, char *), *str;
    uint wild_pos = 0;

    if ((str = start))
    {
      wild_pos = 128;
      for (; *str; str++)
      {
        if (*str == spider_wild_prefix && str[1])
          str++;
        else if (*str == spider_wild_many || *str == spider_wild_one)
        {
          wild_pos = (uint) (str - start) + 1;
          if (wild_pos > 127)
            wild_pos = 127;
          break;
        }
      }
    }
    sort = (sort << 8) + wild_pos;
  }
  va_end(args);
  DBUG_RETURN(sort);
}

double spider_rand(
  uint32 rand_source
) {
  struct my_rnd_struct rand;
  DBUG_ENTER("spider_rand");
  /* generate same as rand function for applications */
  my_rnd_init(&rand, (uint32) (rand_source * 65537L + 55555555L),
    (uint32) (rand_source * 268435457L));
  DBUG_RETURN(my_rnd(&rand));
}

#ifdef SPIDER_HAS_DISCOVER_TABLE_STRUCTURE
int spider_discover_table_structure_internal(
  SPIDER_TRX *trx,
  SPIDER_SHARE *spider_share,
  spider_string *str
) {
  int error_num = 0, roop_count;
  DBUG_ENTER("spider_discover_table_structure_internal");
  for (roop_count = 0; roop_count < SPIDER_DBTON_SIZE; roop_count++)
  {
    if (spider_bit_is_set(spider_share->dbton_bitmap, roop_count))
    {
      if ((error_num = spider_share->dbton_share[roop_count]->
        discover_table_structure(trx, spider_share, str)))
      {
        continue;
      }
      break;
    }
  }
  DBUG_RETURN(error_num);
}

int spider_discover_table_structure(
  handlerton *hton,
  THD* thd,
  TABLE_SHARE *share,
  HA_CREATE_INFO *info
) {
  int error_num = HA_ERR_WRONG_COMMAND, dummy;
  SPIDER_SHARE *spider_share;
  const char *table_name = share->path.str;
  uint table_name_length = (uint) strlen(table_name);
  SPIDER_TRX *trx;
#ifdef WITH_PARTITION_STORAGE_ENGINE
  partition_info *part_info = thd->work_part_info;
#endif
  SPIDER_Open_tables_backup open_tables_backup;
  TABLE *table_tables;
#ifdef WITH_PARTITION_STORAGE_ENGINE
  uint str_len;
#endif
  char buf[MAX_FIELD_WIDTH];
  spider_string str(buf, sizeof(buf), system_charset_info);
  DBUG_ENTER("spider_discover_table_structure");
  str.init_calc_mem(SPD_MID_DISCOVER_TABLE_STRUCTURE_1);
  str.length(0);
  if (str.reserve(
    SPIDER_SQL_CREATE_TABLE_LEN + share->db.length +
    SPIDER_SQL_DOT_LEN + share->table_name.length +
    /* SPIDER_SQL_LCL_NAME_QUOTE_LEN */ 4 + SPIDER_SQL_OPEN_PAREN_LEN
  )) {
    DBUG_RETURN(HA_ERR_OUT_OF_MEM);
  }
  str.q_append(SPIDER_SQL_CREATE_TABLE_STR, SPIDER_SQL_CREATE_TABLE_LEN);
  str.q_append(SPIDER_SQL_LCL_NAME_QUOTE_STR, SPIDER_SQL_LCL_NAME_QUOTE_LEN);
  str.q_append(share->db.str, share->db.length);
  str.q_append(SPIDER_SQL_LCL_NAME_QUOTE_STR, SPIDER_SQL_LCL_NAME_QUOTE_LEN);
  str.q_append(SPIDER_SQL_DOT_STR, SPIDER_SQL_DOT_LEN);
  str.q_append(SPIDER_SQL_LCL_NAME_QUOTE_STR, SPIDER_SQL_LCL_NAME_QUOTE_LEN);
  str.q_append(share->table_name.str, share->table_name.length);
  str.q_append(SPIDER_SQL_LCL_NAME_QUOTE_STR, SPIDER_SQL_LCL_NAME_QUOTE_LEN);
  str.q_append(SPIDER_SQL_OPEN_PAREN_STR, SPIDER_SQL_OPEN_PAREN_LEN);
#ifdef WITH_PARTITION_STORAGE_ENGINE
  str_len = str.length();
#endif
#ifdef SPIDER_HAS_HASH_VALUE_TYPE
  my_hash_value_type hash_value = my_calc_hash(&spider_open_tables,
    (uchar*) table_name, table_name_length);
#endif
  if (!(trx = spider_get_trx(thd, TRUE, &error_num)))
  {
    DBUG_PRINT("info",("spider spider_get_trx error"));
    my_error(error_num, MYF(0));
    DBUG_RETURN(error_num);
  }
  share->table_charset = info->default_table_charset;
  share->comment = info->comment;
#ifdef WITH_PARTITION_STORAGE_ENGINE
  if (!part_info)
  {
#endif
    if (!(spider_share = spider_create_share(table_name, share,
#ifdef WITH_PARTITION_STORAGE_ENGINE
      NULL,
#endif
#ifdef SPIDER_HAS_HASH_VALUE_TYPE
      hash_value,
#endif
      &error_num
    ))) {
      DBUG_RETURN(error_num);
    }

    error_num = spider_discover_table_structure_internal(trx, spider_share, &str);

    if (!error_num)
    {
      if (
        (table_tables = spider_open_sys_table(
          thd, SPIDER_SYS_TABLES_TABLE_NAME_STR,
          SPIDER_SYS_TABLES_TABLE_NAME_LEN, TRUE, &open_tables_backup, FALSE,
          &error_num))
      ) {
#ifdef SPIDER_SUPPORT_CREATE_OR_REPLACE_TABLE
        if (thd->lex->create_info.or_replace())
        {
          error_num = spider_delete_tables(table_tables,
            spider_share->table_name, &dummy);
        }
        if (!error_num)
        {
#endif
          error_num = spider_insert_tables(table_tables, spider_share);
#ifdef SPIDER_SUPPORT_CREATE_OR_REPLACE_TABLE
        }
#endif
        spider_close_sys_table(thd, table_tables,
          &open_tables_backup, FALSE);
      }
    }

    spider_free_share_resource_only(spider_share);
#ifdef WITH_PARTITION_STORAGE_ENGINE
  } else {
    char tmp_name[FN_REFLEN + 1];
    List_iterator<partition_element> part_it(part_info->partitions);
    List_iterator<partition_element> part_it2(part_info->partitions);
    partition_element *part_elem, *sub_elem;
    while ((part_elem = part_it++))
    {
      if ((part_elem)->subpartitions.elements)
      {
        List_iterator<partition_element> sub_it((part_elem)->subpartitions);
        while ((sub_elem = sub_it++))
        {
          str.length(str_len);
          if ((error_num = SPIDER_create_subpartition_name(
            tmp_name, FN_REFLEN + 1, table_name,
            (part_elem)->partition_name, (sub_elem)->partition_name,
            NORMAL_PART_NAME)))
          {
            DBUG_RETURN(HA_ERR_OUT_OF_MEM);
          }
          DBUG_PRINT("info",("spider tmp_name=%s", tmp_name));
          if (!(spider_share = spider_create_share(tmp_name, share,
            part_info,
#ifdef SPIDER_HAS_HASH_VALUE_TYPE
            hash_value,
#endif
            &error_num
          ))) {
            DBUG_RETURN(error_num);
          }

          error_num = spider_discover_table_structure_internal(
            trx, spider_share, &str);

          spider_free_share_resource_only(spider_share);
          if (!error_num)
            break;
        }
        if (!error_num)
          break;
      } else {
        str.length(str_len);
        if ((error_num = SPIDER_create_partition_name(
          tmp_name, FN_REFLEN + 1, table_name,
          (part_elem)->partition_name, NORMAL_PART_NAME, TRUE)))
        {
          DBUG_RETURN(HA_ERR_OUT_OF_MEM);
        }
        DBUG_PRINT("info",("spider tmp_name=%s", tmp_name));
        if (!(spider_share = spider_create_share(tmp_name, share,
          part_info,
#ifdef SPIDER_HAS_HASH_VALUE_TYPE
          hash_value,
#endif
          &error_num
        ))) {
          DBUG_RETURN(error_num);
        }

        error_num = spider_discover_table_structure_internal(
          trx, spider_share, &str);

        spider_free_share_resource_only(spider_share);
        if (!error_num)
          break;
      }
    }
    if (!error_num)
    {
      if (
        !(table_tables = spider_open_sys_table(
          thd, SPIDER_SYS_TABLES_TABLE_NAME_STR,
          SPIDER_SYS_TABLES_TABLE_NAME_LEN, TRUE, &open_tables_backup, FALSE,
          &error_num))
      ) {
        DBUG_RETURN(error_num);
      }
      while ((part_elem = part_it2++))
      {
        if ((part_elem)->subpartitions.elements)
        {
          List_iterator<partition_element> sub_it((part_elem)->subpartitions);
          while ((sub_elem = sub_it++))
          {
            if ((error_num = SPIDER_create_subpartition_name(
              tmp_name, FN_REFLEN + 1, table_name,
              (part_elem)->partition_name, (sub_elem)->partition_name,
              NORMAL_PART_NAME)))
            {
              DBUG_RETURN(HA_ERR_OUT_OF_MEM);
            }
            DBUG_PRINT("info",("spider tmp_name=%s", tmp_name));
            if (!(spider_share = spider_create_share(tmp_name, share,
              part_info,
#ifdef SPIDER_HAS_HASH_VALUE_TYPE
              hash_value,
#endif
              &error_num
            ))) {
              DBUG_RETURN(error_num);
            }

#ifdef SPIDER_SUPPORT_CREATE_OR_REPLACE_TABLE
            if (thd->lex->create_info.or_replace())
            {
              error_num = spider_delete_tables(table_tables,
                spider_share->table_name, &dummy);
            }
            if (!error_num)
            {
#endif
              error_num = spider_insert_tables(table_tables, spider_share);
#ifdef SPIDER_SUPPORT_CREATE_OR_REPLACE_TABLE
            }
#endif

            spider_free_share_resource_only(spider_share);
            if (error_num)
              break;
          }
          if (error_num)
            break;
        } else {
          if ((error_num = SPIDER_create_partition_name(
            tmp_name, FN_REFLEN + 1, table_name,
            (part_elem)->partition_name, NORMAL_PART_NAME, TRUE)))
          {
            DBUG_RETURN(HA_ERR_OUT_OF_MEM);
          }
          DBUG_PRINT("info",("spider tmp_name=%s", tmp_name));
          if (!(spider_share = spider_create_share(tmp_name, share,
            part_info,
#ifdef SPIDER_HAS_HASH_VALUE_TYPE
            hash_value,
#endif
            &error_num
          ))) {
            DBUG_RETURN(error_num);
          }

#ifdef SPIDER_SUPPORT_CREATE_OR_REPLACE_TABLE
          if (thd->lex->create_info.or_replace())
          {
            error_num = spider_delete_tables(table_tables,
              spider_share->table_name, &dummy);
          }
          if (!error_num)
          {
#endif
            error_num = spider_insert_tables(table_tables, spider_share);
#ifdef SPIDER_SUPPORT_CREATE_OR_REPLACE_TABLE
          }
#endif

          spider_free_share_resource_only(spider_share);
          if (error_num)
            break;
        }
      }
      spider_close_sys_table(thd, table_tables,
        &open_tables_backup, FALSE);
    }
  }
#endif

  if (!error_num)
    thd->clear_error();
  else
    DBUG_RETURN(error_num);

  str.length(str.length() - SPIDER_SQL_COMMA_LEN);
  CHARSET_INFO *table_charset;
  if (share->table_charset)
  {
    table_charset = share->table_charset;
  } else {
    table_charset = system_charset_info;
  }
  uint csnamelen = strlen(table_charset->csname);
  uint collatelen = strlen(table_charset->name);
  if (str.reserve(SPIDER_SQL_CLOSE_PAREN_LEN + SPIDER_SQL_DEFAULT_CHARSET_LEN +
    csnamelen + SPIDER_SQL_COLLATE_LEN + collatelen +
    SPIDER_SQL_CONNECTION_LEN + SPIDER_SQL_VALUE_QUOTE_LEN +
    (share->comment.length * 2)
  )) {
    DBUG_RETURN(HA_ERR_OUT_OF_MEM);
  }
  str.q_append(SPIDER_SQL_CLOSE_PAREN_STR, SPIDER_SQL_CLOSE_PAREN_LEN);
  str.q_append(SPIDER_SQL_DEFAULT_CHARSET_STR, SPIDER_SQL_DEFAULT_CHARSET_LEN);
  str.q_append(table_charset->csname, csnamelen);
  str.q_append(SPIDER_SQL_COLLATE_STR, SPIDER_SQL_COLLATE_LEN);
  str.q_append(table_charset->name, collatelen);
  str.q_append(SPIDER_SQL_COMMENT_STR, SPIDER_SQL_COMMENT_LEN);
  str.q_append(SPIDER_SQL_VALUE_QUOTE_STR, SPIDER_SQL_VALUE_QUOTE_LEN);
  str.append_escape_string(share->comment.str, share->comment.length);
  if (str.reserve(SPIDER_SQL_CONNECTION_LEN +
    (SPIDER_SQL_VALUE_QUOTE_LEN * 2) +
    (share->connect_string.length * 2)))
  {
    DBUG_RETURN(HA_ERR_OUT_OF_MEM);
  }
  str.q_append(SPIDER_SQL_VALUE_QUOTE_STR, SPIDER_SQL_VALUE_QUOTE_LEN);
  str.q_append(SPIDER_SQL_CONNECTION_STR, SPIDER_SQL_CONNECTION_LEN);
  str.q_append(SPIDER_SQL_VALUE_QUOTE_STR, SPIDER_SQL_VALUE_QUOTE_LEN);
  str.append_escape_string(share->connect_string.str,
    share->connect_string.length);
  if (str.reserve(SPIDER_SQL_VALUE_QUOTE_LEN))
  {
    DBUG_RETURN(HA_ERR_OUT_OF_MEM);
  }
  str.q_append(SPIDER_SQL_VALUE_QUOTE_STR, SPIDER_SQL_VALUE_QUOTE_LEN);
#ifdef WITH_PARTITION_STORAGE_ENGINE
  DBUG_PRINT("info",("spider part_info=%p", part_info));
  if (part_info)
  {
    uint part_syntax_len;
    char *part_syntax;
    List_iterator<partition_element> part_it(part_info->partitions);
    partition_element *part_elem, *sub_elem;
    while ((part_elem = part_it++))
    {
      part_elem->engine_type = hton;
      if ((part_elem)->subpartitions.elements)
      {
        List_iterator<partition_element> sub_it((part_elem)->subpartitions);
        while ((sub_elem = sub_it++))
        {
          sub_elem->engine_type = hton;
        }
      }
    }
    if (part_info->fix_parser_data(thd))
    {
      DBUG_RETURN(ER_SPIDER_UNKNOWN_NUM);
    }
    if (!(part_syntax = SPIDER_generate_partition_syntax(thd, part_info,
      &part_syntax_len, FALSE, TRUE, info, NULL, NULL)))
    {
      DBUG_RETURN(HA_ERR_OUT_OF_MEM);
    }
    if (str.reserve(part_syntax_len))
    {
      DBUG_RETURN(HA_ERR_OUT_OF_MEM);
    }
    str.q_append(part_syntax, part_syntax_len);
    SPIDER_free_part_syntax(part_syntax, MYF(0));
  }
#endif
  DBUG_PRINT("info",("spider str=%s", str.c_ptr_safe()));

  error_num = share->init_from_sql_statement_string(thd, TRUE, str.ptr(),
    str.length());
  DBUG_RETURN(error_num);
}
#endif

#ifndef WITHOUT_SPIDER_BG_SEARCH
int spider_create_spider_object_for_share(
  SPIDER_TRX *trx,
  SPIDER_SHARE *share,
  ha_spider **spider
) {
  int error_num, roop_count, *need_mons;
  SPIDER_CONN **conns;
  uint *conn_link_idx;
  uchar *conn_can_fo;
  char **conn_keys;
  spider_db_handler **dbton_hdl;
  SPIDER_WIDE_HANDLER *wide_handler;
  DBUG_ENTER("spider_create_spider_object_for_share");
  DBUG_PRINT("info",("spider trx=%p", trx));
  DBUG_PRINT("info",("spider share=%p", share));
  DBUG_PRINT("info",("spider spider_ptr=%p", spider));
  DBUG_PRINT("info",("spider spider=%p", (*spider)));

  if (*spider)
  {
    /* already exists */
    DBUG_RETURN(0);
  }
  (*spider) = new (&share->mem_root) ha_spider();
  if (!(*spider))
  {
    error_num = HA_ERR_OUT_OF_MEM;
    goto error_spider_alloc;
  }
  DBUG_PRINT("info",("spider spider=%p", (*spider)));
  if (!(need_mons = (int *)
    spider_bulk_malloc(spider_current_trx, SPD_MID_CREATE_SPIDER_OBJECT_FOR_SHARE_2, MYF(MY_WME | MY_ZEROFILL),
      &need_mons, (uint) (sizeof(int) * share->link_count),
      &conns, (uint) (sizeof(SPIDER_CONN *) * share->link_count),
      &conn_link_idx, (uint) (sizeof(uint) * share->link_count),
      &conn_can_fo, (uint) (sizeof(uchar) * share->link_bitmap_size),
      &conn_keys, (uint) (sizeof(char *) * share->link_count),
      &dbton_hdl, (uint) (sizeof(spider_db_handler *) * SPIDER_DBTON_SIZE),
      &wide_handler, (uint) sizeof(SPIDER_WIDE_HANDLER),
      NullS))
  )
  {
    error_num = HA_ERR_OUT_OF_MEM;
    goto error_need_mons_alloc;
  }
  DBUG_PRINT("info",("spider need_mons=%p", need_mons));
  (*spider)->wide_handler = wide_handler;
  wide_handler->trx = trx;
  (*spider)->change_table_ptr(&share->table, share->table_share);
  (*spider)->share = share;
  (*spider)->conns = conns;
  (*spider)->conn_link_idx = conn_link_idx;
  (*spider)->conn_can_fo = conn_can_fo;
  (*spider)->need_mons = need_mons;
  (*spider)->conn_keys_first_ptr = share->conn_keys[0];
  (*spider)->conn_keys = conn_keys;
  (*spider)->dbton_handler = dbton_hdl;
  (*spider)->search_link_idx = -1;
  for (roop_count = 0; roop_count < SPIDER_DBTON_SIZE; roop_count++)
  {
    if (
      spider_bit_is_set(share->dbton_bitmap, roop_count) &&
      spider_dbton[roop_count].create_db_handler
    ) {
      if (!(dbton_hdl[roop_count] = spider_dbton[roop_count].create_db_handler(
        *spider, share->dbton_share[roop_count])))
      {
        error_num = HA_ERR_OUT_OF_MEM;
        goto error_init_db_handler;
      }
      if ((error_num = dbton_hdl[roop_count]->init()))
        goto error_init_db_handler;
    }
  }
  DBUG_PRINT("info",("spider share=%p", (*spider)->share));
  DBUG_PRINT("info",("spider need_mons=%p", (*spider)->need_mons));
  DBUG_RETURN(0);

error_init_db_handler:
  for (; roop_count >= 0; --roop_count)
  {
    if (
      spider_bit_is_set(share->dbton_bitmap, roop_count) &&
      dbton_hdl[roop_count]
    ) {
      delete dbton_hdl[roop_count];
      dbton_hdl[roop_count] = NULL;
    }
  }
  spider_free(spider_current_trx, (*spider)->need_mons, MYF(0));
error_need_mons_alloc:
  delete (*spider);
  (*spider) = NULL;
error_spider_alloc:
  DBUG_RETURN(error_num);
}

void spider_free_spider_object_for_share(
  ha_spider **spider
) {
  int roop_count;
  SPIDER_SHARE *share = (*spider)->share;
  spider_db_handler **dbton_hdl = (*spider)->dbton_handler;
  DBUG_ENTER("spider_free_spider_object_for_share");
  DBUG_PRINT("info",("spider share=%p", share));
  DBUG_PRINT("info",("spider spider_ptr=%p", spider));
  DBUG_PRINT("info",("spider spider=%p", (*spider)));
  for (roop_count = SPIDER_DBTON_SIZE - 1; roop_count >= 0; --roop_count)
  {
    if (
      spider_bit_is_set(share->dbton_bitmap, roop_count) &&
      dbton_hdl[roop_count]
    ) {
      delete dbton_hdl[roop_count];
      dbton_hdl[roop_count] = NULL;
    }
  }
  spider_free(spider_current_trx, (*spider)->need_mons, MYF(0));
  delete (*spider);
  (*spider) = NULL;
  DBUG_VOID_RETURN;
}

int spider_create_sts_threads(
  SPIDER_THREAD *spider_thread
) {
  int error_num;
  DBUG_ENTER("spider_create_sts_threads");
  if (mysql_mutex_init(spd_key_mutex_bg_stss,
    &spider_thread->mutex, MY_MUTEX_INIT_FAST))
  {
    error_num = HA_ERR_OUT_OF_MEM;
    goto error_mutex_init;
  }
  if (mysql_cond_init(spd_key_cond_bg_stss,
    &spider_thread->cond, NULL))
  {
    error_num = HA_ERR_OUT_OF_MEM;
    goto error_cond_init;
  }
  if (mysql_cond_init(spd_key_cond_bg_sts_syncs,
    &spider_thread->sync_cond, NULL))
  {
    error_num = HA_ERR_OUT_OF_MEM;
    goto error_sync_cond_init;
  }
  if (mysql_thread_create(spd_key_thd_bg_stss, &spider_thread->thread,
    &spider_pt_attr, spider_table_bg_sts_action, (void *) spider_thread)
  )
  {
    error_num = HA_ERR_OUT_OF_MEM;
    goto error_thread_create;
  }
  DBUG_RETURN(0);

error_thread_create:
  pthread_cond_destroy(&spider_thread->sync_cond);
error_sync_cond_init:
  pthread_cond_destroy(&spider_thread->cond);
error_cond_init:
  pthread_mutex_destroy(&spider_thread->mutex);
error_mutex_init:
  DBUG_RETURN(error_num);
}

void spider_free_sts_threads(
  SPIDER_THREAD *spider_thread
) {
  bool thread_killed;
  DBUG_ENTER("spider_free_sts_threads");
  pthread_mutex_lock(&spider_thread->mutex);
  thread_killed = spider_thread->killed;
  spider_thread->killed = TRUE;
  if (!thread_killed)
  {
    if (spider_thread->thd_wait)
    {
      pthread_cond_signal(&spider_thread->cond);
    }
    pthread_cond_wait(&spider_thread->sync_cond, &spider_thread->mutex);
  }
  pthread_mutex_unlock(&spider_thread->mutex);
  pthread_join(spider_thread->thread, NULL);
  pthread_cond_destroy(&spider_thread->sync_cond);
  pthread_cond_destroy(&spider_thread->cond);
  pthread_mutex_destroy(&spider_thread->mutex);
  spider_thread->thd_wait = FALSE;
  spider_thread->killed = FALSE;
  DBUG_VOID_RETURN;
}

int spider_create_crd_threads(
  SPIDER_THREAD *spider_thread
) {
  int error_num;
  DBUG_ENTER("spider_create_crd_threads");
  if (mysql_mutex_init(spd_key_mutex_bg_crds,
    &spider_thread->mutex, MY_MUTEX_INIT_FAST))
  {
    error_num = HA_ERR_OUT_OF_MEM;
    goto error_mutex_init;
  }
  if (mysql_cond_init(spd_key_cond_bg_crds,
    &spider_thread->cond, NULL))
  {
    error_num = HA_ERR_OUT_OF_MEM;
    goto error_cond_init;
  }
  if (mysql_cond_init(spd_key_cond_bg_crd_syncs,
    &spider_thread->sync_cond, NULL))
  {
    error_num = HA_ERR_OUT_OF_MEM;
    goto error_sync_cond_init;
  }
  if (mysql_thread_create(spd_key_thd_bg_crds, &spider_thread->thread,
    &spider_pt_attr, spider_table_bg_crd_action, (void *) spider_thread)
  )
  {
    error_num = HA_ERR_OUT_OF_MEM;
    goto error_thread_create;
  }
  DBUG_RETURN(0);

error_thread_create:
  pthread_cond_destroy(&spider_thread->sync_cond);
error_sync_cond_init:
  pthread_cond_destroy(&spider_thread->cond);
error_cond_init:
  pthread_mutex_destroy(&spider_thread->mutex);
error_mutex_init:
  DBUG_RETURN(error_num);
}

void spider_free_crd_threads(
  SPIDER_THREAD *spider_thread
) {
  bool thread_killed;
  DBUG_ENTER("spider_free_crd_threads");
  pthread_mutex_lock(&spider_thread->mutex);
  thread_killed = spider_thread->killed;
  spider_thread->killed = TRUE;
  if (!thread_killed)
  {
    if (spider_thread->thd_wait)
    {
      pthread_cond_signal(&spider_thread->cond);
    }
    pthread_cond_wait(&spider_thread->sync_cond, &spider_thread->mutex);
  }
  pthread_mutex_unlock(&spider_thread->mutex);
  pthread_join(spider_thread->thread, NULL);
  pthread_cond_destroy(&spider_thread->sync_cond);
  pthread_cond_destroy(&spider_thread->cond);
  pthread_mutex_destroy(&spider_thread->mutex);
  spider_thread->thd_wait = FALSE;
  spider_thread->killed = FALSE;
  DBUG_VOID_RETURN;
}

void *spider_table_bg_sts_action(
  void *arg
) {
  SPIDER_THREAD *thread = (SPIDER_THREAD *) arg;
  SPIDER_SHARE *share;
  SPIDER_TRX *trx;
  int error_num;
  ha_spider *spider;
  SPIDER_CONN **conns;
  THD *thd;
  my_thread_init();
  DBUG_ENTER("spider_table_bg_sts_action");
  /* init start */
  pthread_mutex_lock(&thread->mutex);
  if (!(thd = spider_create_sys_thd(thread)))
  {
    thread->thd_wait = FALSE;
    thread->killed = FALSE;
    pthread_mutex_unlock(&thread->mutex);
    my_thread_end();
    DBUG_RETURN(NULL);
  }
  SPIDER_set_next_thread_id(thd);
#ifdef HAVE_PSI_INTERFACE
  mysql_thread_set_psi_id(thd->thread_id);
#endif
  thd_proc_info(thd, "Spider table background statistics action handler");
  if (!(trx = spider_get_trx(NULL, FALSE, &error_num)))
  {
    spider_destroy_sys_thd(thd);
    thread->thd_wait = FALSE;
    thread->killed = FALSE;
    pthread_mutex_unlock(&thread->mutex);
#if !defined(MYSQL_DYNAMIC_PLUGIN) || !defined(_WIN32)
    set_current_thd(nullptr);
#endif
    my_thread_end();
    DBUG_RETURN(NULL);
  }
  trx->thd = thd;
  /* init end */

  if (thd->killed)
  {
    thread->killed = TRUE;
  }
  if (thd->killed)
  {
    thread->killed = TRUE;
  }

  while (TRUE)
  {
    DBUG_PRINT("info",("spider bg sts loop start"));
    if (thread->killed)
    {
      DBUG_PRINT("info",("spider bg sts kill start"));
      trx->thd = NULL;
      spider_free_trx(trx, TRUE);
      spider_destroy_sys_thd(thd);
      pthread_cond_signal(&thread->sync_cond);
      pthread_mutex_unlock(&thread->mutex);
#if !defined(MYSQL_DYNAMIC_PLUGIN) || !defined(_WIN32)
      set_current_thd(nullptr);
#endif
      my_thread_end();
      DBUG_RETURN(NULL);
    }
    if (!thread->queue_first)
    {
      DBUG_PRINT("info",("spider bg sts has no job"));
      thread->thd_wait = TRUE;
      pthread_cond_wait(&thread->cond, &thread->mutex);
      thread->thd_wait = FALSE;
      if (thd->killed)
        thread->killed = TRUE;
      continue;
    }
    share = (SPIDER_SHARE *) thread->queue_first;
    share->sts_working = TRUE;
    pthread_mutex_unlock(&thread->mutex);

    spider = share->sts_spider;
    conns = spider->conns;
    if (spider->search_link_idx < 0)
    {
      spider->wide_handler->trx = trx;
      spider_trx_set_link_idx_for_all(spider);
      spider->search_link_idx = spider_conn_first_link_idx(thd,
        share->link_statuses, share->access_balances, spider->conn_link_idx,
        share->link_count, SPIDER_LINK_STATUS_OK);
    }
    if (spider->search_link_idx >= 0)
    {
      DBUG_PRINT("info",
        ("spider difftime=%f",
          difftime(share->bg_sts_try_time, share->sts_get_time)));
      DBUG_PRINT("info",
        ("spider bg_sts_interval=%f", share->bg_sts_interval));
      if (difftime(share->bg_sts_try_time, share->sts_get_time) >=
        share->bg_sts_interval)
      {
        if (!conns[spider->search_link_idx])
        {
          spider_get_conn(share, spider->search_link_idx,
            share->conn_keys[spider->search_link_idx],
            trx, spider, FALSE, FALSE, SPIDER_CONN_KIND_MYSQL,
            &error_num);
          if (conns[spider->search_link_idx])
          {
            conns[spider->search_link_idx]->error_mode = 0;
          } else {
            spider->search_link_idx = -1;
          }
        }
        DBUG_PRINT("info",
          ("spider search_link_idx=%d", spider->search_link_idx));
        if (spider->search_link_idx >= 0 && conns[spider->search_link_idx])
        {
#ifdef WITH_PARTITION_STORAGE_ENGINE
          if (spider_get_sts(share, spider->search_link_idx,
            share->bg_sts_try_time, spider,
            share->bg_sts_interval, share->bg_sts_mode,
            share->bg_sts_sync,
            2, HA_STATUS_CONST | HA_STATUS_VARIABLE))
#else
          if (spider_get_sts(share, spider->search_link_idx,
            share->bg_sts_try_time, spider,
            share->bg_sts_interval, share->bg_sts_mode,
            2, HA_STATUS_CONST | HA_STATUS_VARIABLE))
#endif
          {
            spider->search_link_idx = -1;
          }
        }
      }
    }
    memset(spider->need_mons, 0, sizeof(int) * share->link_count);
    pthread_mutex_lock(&thread->mutex);
    if (thread->queue_first == thread->queue_last)
    {
      thread->queue_first = NULL;
      thread->queue_last = NULL;
    } else {
      thread->queue_first = share->sts_next;
      share->sts_next->sts_prev = NULL;
      share->sts_next = NULL;
    }
    share->sts_working = FALSE;
    share->sts_wait = FALSE;
    if (thread->first_free_wait)
    {
      pthread_cond_signal(&thread->sync_cond);
      pthread_cond_wait(&thread->cond, &thread->mutex);
      if (thd->killed)
        thread->killed = TRUE;
    }
  }
}

void *spider_table_bg_crd_action(
  void *arg
) {
  SPIDER_THREAD *thread = (SPIDER_THREAD *) arg;
  SPIDER_SHARE *share;
  SPIDER_TRX *trx;
  int error_num;
  ha_spider *spider;
  TABLE *table;
  SPIDER_CONN **conns;
  THD *thd;
  my_thread_init();
  DBUG_ENTER("spider_table_bg_crd_action");
  /* init start */
  pthread_mutex_lock(&thread->mutex);
  if (!(thd = spider_create_sys_thd(thread)))
  {
    thread->thd_wait = FALSE;
    thread->killed = FALSE;
    pthread_mutex_unlock(&thread->mutex);
    my_thread_end();
    DBUG_RETURN(NULL);
  }
  SPIDER_set_next_thread_id(thd);
#ifdef HAVE_PSI_INTERFACE
  mysql_thread_set_psi_id(thd->thread_id);
#endif
  thd_proc_info(thd, "Spider table background cardinality action handler");
  if (!(trx = spider_get_trx(NULL, FALSE, &error_num)))
  {
    spider_destroy_sys_thd(thd);
    thread->thd_wait = FALSE;
    thread->killed = FALSE;
    pthread_mutex_unlock(&thread->mutex);
#if !defined(MYSQL_DYNAMIC_PLUGIN) || !defined(_WIN32)
    set_current_thd(nullptr);
#endif
    my_thread_end();
    DBUG_RETURN(NULL);
  }
  trx->thd = thd;
  /* init end */

  while (TRUE)
  {
    DBUG_PRINT("info",("spider bg crd loop start"));
    if (thread->killed)
    {
      DBUG_PRINT("info",("spider bg crd kill start"));
      trx->thd = NULL;
      spider_free_trx(trx, TRUE);
      spider_destroy_sys_thd(thd);
      pthread_cond_signal(&thread->sync_cond);
      pthread_mutex_unlock(&thread->mutex);
#if !defined(MYSQL_DYNAMIC_PLUGIN) || !defined(_WIN32)
      set_current_thd(nullptr);
#endif
      my_thread_end();
      DBUG_RETURN(NULL);
    }
    if (!thread->queue_first)
    {
      DBUG_PRINT("info",("spider bg crd has no job"));
      thread->thd_wait = TRUE;
      pthread_cond_wait(&thread->cond, &thread->mutex);
      thread->thd_wait = FALSE;
      if (thd->killed)
        thread->killed = TRUE;
      continue;
    }
    share = (SPIDER_SHARE *) thread->queue_first;
    share->crd_working = TRUE;
    pthread_mutex_unlock(&thread->mutex);

    table = &share->table;
    spider = share->crd_spider;
    conns = spider->conns;
    if (spider->search_link_idx < 0)
    {
      spider->wide_handler->trx = trx;
      spider_trx_set_link_idx_for_all(spider);
      spider->search_link_idx = spider_conn_first_link_idx(thd,
        share->link_statuses, share->access_balances, spider->conn_link_idx,
        share->link_count, SPIDER_LINK_STATUS_OK);
    }
    if (spider->search_link_idx >= 0)
    {
      DBUG_PRINT("info",
        ("spider difftime=%f",
          difftime(share->bg_crd_try_time, share->crd_get_time)));
      DBUG_PRINT("info",
        ("spider bg_crd_interval=%f", share->bg_crd_interval));
      if (difftime(share->bg_crd_try_time, share->crd_get_time) >=
        share->bg_crd_interval)
      {
        if (!conns[spider->search_link_idx])
        {
          spider_get_conn(share, spider->search_link_idx,
            share->conn_keys[spider->search_link_idx],
            trx, spider, FALSE, FALSE, SPIDER_CONN_KIND_MYSQL,
            &error_num);
          if (conns[spider->search_link_idx])
          {
            conns[spider->search_link_idx]->error_mode = 0;
          } else {
            spider->search_link_idx = -1;
          }
        }
        DBUG_PRINT("info",
          ("spider search_link_idx=%d", spider->search_link_idx));
        if (spider->search_link_idx >= 0 && conns[spider->search_link_idx])
        {
#ifdef WITH_PARTITION_STORAGE_ENGINE
          if (spider_get_crd(share, spider->search_link_idx,
            share->bg_crd_try_time, spider, table,
            share->bg_crd_interval, share->bg_crd_mode,
            share->bg_crd_sync,
            2))
#else
          if (spider_get_crd(share, spider->search_link_idx,
            share->bg_crd_try_time, spider, table,
            share->bg_crd_interval, share->bg_crd_mode,
            2))
#endif
          {
            spider->search_link_idx = -1;
          }
        }
      }
    }
    memset(spider->need_mons, 0, sizeof(int) * share->link_count);
    pthread_mutex_lock(&thread->mutex);
    if (thread->queue_first == thread->queue_last)
    {
      thread->queue_first = NULL;
      thread->queue_last = NULL;
    } else {
      thread->queue_first = share->crd_next;
      share->crd_next->crd_prev = NULL;
      share->crd_next = NULL;
    }
    share->crd_working = FALSE;
    share->crd_wait = FALSE;
    if (thread->first_free_wait)
    {
      pthread_cond_signal(&thread->sync_cond);
      pthread_cond_wait(&thread->cond, &thread->mutex);
      if (thd->killed)
        thread->killed = TRUE;
    }
  }
}

void spider_table_add_share_to_sts_thread(
  SPIDER_SHARE *share
) {
  SPIDER_THREAD *spider_thread = share->sts_thread;
  DBUG_ENTER("spider_table_add_share_to_sts_thread");
  if (
    !share->sts_wait &&
    !pthread_mutex_trylock(&spider_thread->mutex)
  ) {
    if (!share->sts_wait)
    {
      if (spider_thread->queue_last)
      {
        DBUG_PRINT("info",("spider add to last"));
        share->sts_prev = spider_thread->queue_last;
        spider_thread->queue_last->sts_next = share;
      } else {
        spider_thread->queue_first = share;
      }
      spider_thread->queue_last = share;
      share->sts_wait = TRUE;

      if (spider_thread->thd_wait)
      {
        pthread_cond_signal(&spider_thread->cond);
      }
    }
    pthread_mutex_unlock(&spider_thread->mutex);
  }
  DBUG_VOID_RETURN;
}

void spider_table_add_share_to_crd_thread(
  SPIDER_SHARE *share
) {
  SPIDER_THREAD *spider_thread = share->crd_thread;
  DBUG_ENTER("spider_table_add_share_to_crd_thread");
  if (
    !share->crd_wait &&
    !pthread_mutex_trylock(&spider_thread->mutex)
  ) {
    if (!share->crd_wait)
    {
      if (spider_thread->queue_last)
      {
        DBUG_PRINT("info",("spider add to last"));
        share->crd_prev = spider_thread->queue_last;
        spider_thread->queue_last->crd_next = share;
      } else {
        spider_thread->queue_first = share;
      }
      spider_thread->queue_last = share;
      share->crd_wait = TRUE;

      if (spider_thread->thd_wait)
      {
        pthread_cond_signal(&spider_thread->cond);
      }
    }
    pthread_mutex_unlock(&spider_thread->mutex);
  }
  DBUG_VOID_RETURN;
}

void spider_table_remove_share_from_sts_thread(
  SPIDER_SHARE *share
) {
  SPIDER_THREAD *spider_thread = share->sts_thread;
  DBUG_ENTER("spider_table_remove_share_from_sts_thread");
  if (share->sts_wait)
  {
    pthread_mutex_lock(&spider_thread->mutex);
    if (share->sts_wait)
    {
      if (share->sts_working)
      {
        DBUG_PRINT("info",("spider waiting bg sts start"));
        spider_thread->first_free_wait = TRUE;
        pthread_cond_wait(&spider_thread->sync_cond, &spider_thread->mutex);
        spider_thread->first_free_wait = FALSE;
        pthread_cond_signal(&spider_thread->cond);
        DBUG_PRINT("info",("spider waiting bg sts end"));
      }

      if (share->sts_prev)
      {
        if (share->sts_next)
        {
          DBUG_PRINT("info",("spider remove middle one"));
          share->sts_prev->sts_next = share->sts_next;
          share->sts_next->sts_prev = share->sts_prev;
        } else {
          DBUG_PRINT("info",("spider remove last one"));
          share->sts_prev->sts_next = NULL;
          spider_thread->queue_last = share->sts_prev;
        }
      } else if (share->sts_next) {
        DBUG_PRINT("info",("spider remove first one"));
        share->sts_next->sts_prev = NULL;
        spider_thread->queue_first = share->sts_next;
      } else {
        DBUG_PRINT("info",("spider empty"));
        spider_thread->queue_first = NULL;
        spider_thread->queue_last = NULL;
      }
    }
    pthread_mutex_unlock(&spider_thread->mutex);
  }
  DBUG_VOID_RETURN;
}

void spider_table_remove_share_from_crd_thread(
  SPIDER_SHARE *share
) {
  SPIDER_THREAD *spider_thread = share->crd_thread;
  DBUG_ENTER("spider_table_remove_share_from_crd_thread");
  if (share->crd_wait)
  {
    pthread_mutex_lock(&spider_thread->mutex);
    if (share->crd_wait)
    {
      if (share->crd_working)
      {
        DBUG_PRINT("info",("spider waiting bg crd start"));
        spider_thread->first_free_wait = TRUE;
        pthread_cond_wait(&spider_thread->sync_cond, &spider_thread->mutex);
        spider_thread->first_free_wait = FALSE;
        pthread_cond_signal(&spider_thread->cond);
        DBUG_PRINT("info",("spider waiting bg crd end"));
      }

      if (share->crd_prev)
      {
        if (share->crd_next)
        {
          DBUG_PRINT("info",("spider remove middle one"));
          share->crd_prev->crd_next = share->crd_next;
          share->crd_next->crd_prev = share->crd_prev;
        } else {
          DBUG_PRINT("info",("spider remove last one"));
          share->crd_prev->crd_next = NULL;
          spider_thread->queue_last = share->crd_prev;
        }
      } else if (share->crd_next) {
        DBUG_PRINT("info",("spider remove first one"));
        share->crd_next->crd_prev = NULL;
        spider_thread->queue_first = share->crd_next;
      } else {
        DBUG_PRINT("info",("spider empty"));
        spider_thread->queue_first = NULL;
        spider_thread->queue_last = NULL;
      }
    }
    pthread_mutex_unlock(&spider_thread->mutex);
  }
  DBUG_VOID_RETURN;
}
#endif

uchar *spider_duplicate_char(
  uchar *dst,
  uchar esc,
  uchar *src,
  uint src_lgt
) {
  uchar *ed = src + src_lgt;
  DBUG_ENTER("spider_duplicate_char");
  while (src < ed)
  {
    *dst = *src;
    if (*src == esc)
    {
      ++dst;
      *dst = esc;
    }
    ++dst;
    ++src;
  }
  DBUG_RETURN(dst);
}