Merge desktop.sanja.is.com.ua:/home/bell/mysql/bk/mysql-maria

into  desktop.sanja.is.com.ua:/home/bell/mysql/bk/work-maria-purge


storage/maria/ma_loghandler.c:
  Auto merged
storage/maria/ma_loghandler.h:
  Auto merged

.bzrignore

@@ -3045,3 +3045,6 @@ win/vs71cache.txt
 win/vs8cache.txt
 zlib/*.ds?
 zlib/*.vcproj
+maria_log_control
+storage/maria/tmp/*
+storage/maria/tmp/*

include/maria.h

@@ -300,7 +300,8 @@ extern ha_rows maria_records_in_range(struct st_maria_info *info, int inx,
 extern int maria_is_changed(struct st_maria_info *info);
 extern int maria_delete_all_rows(struct st_maria_info *info);
 extern uint maria_get_pointer_length(ulonglong file_length, uint def);
-
+extern int maria_commit(struct st_maria_info *info);
+extern int maria_begin(struct st_maria_info *info);
 
 /* this is used to pass to mysql_mariachk_table */
 

mysys/my_realloc.c

@@ -22,6 +22,16 @@
 
 	/* My memory re allocator */
 
+/**
+   @brief wrapper around realloc()
+
+   @param  oldpoint        pointer to currently allocated area
+   @param  size            new size requested, must be >0
+   @param  my_flags        flags
+
+   @note if size==0 realloc() may return NULL; my_realloc() treats this as an
+   error which is not the intention of realloc()
+*/
 void* my_realloc(void* oldpoint, size_t size, myf my_flags)
 {
   void *point;
@@ -29,6 +39,7 @@ void* my_realloc(void* oldpoint, size_t size, myf my_flags)
   DBUG_PRINT("my",("ptr: 0x%lx  size: %lu  my_flags: %d", (long) oldpoint,
                    (ulong) size, my_flags));
 
+  DBUG_ASSERT(size > 0);
   if (!oldpoint && (my_flags & MY_ALLOW_ZERO_PTR))
     DBUG_RETURN(my_malloc(size,my_flags));
 #ifdef USE_HALLOC

sql/mysqld.cc

@@ -3418,6 +3418,17 @@ server.");
     using_update_log=1;
   }
 
+  /* call ha_init_key_cache() on all key caches to init them */
+  process_key_caches(&ha_init_key_cache);
+  /*
+    Maria's pagecache needs to be ready before Maria engine (Recovery uses
+    pagecache, and Checkpoint may happen at startup). Maria engine is taken up
+    in plugin_init().
+  */
+#ifdef WITH_MARIA_STORAGE_ENGINE
+  process_pagecaches(&ha_init_pagecache);
+#endif /* WITH_MARIA_STORAGE_ENGINE */
+
   /* Allow storage engine to give real error messages */
   if (ha_init_errors())
     DBUG_RETURN(1);
@@ -3588,12 +3599,6 @@ server.");
   if (opt_myisam_log)
     (void) mi_log(1);
 
-  /* call ha_init_key_cache() on all key caches to init them */
-  process_key_caches(&ha_init_key_cache);
-#ifdef WITH_MARIA_STORAGE_ENGINE
-  process_pagecaches(&ha_init_pagecache);
-#endif /* WITH_MARIA_STORAGE_ENGINE */
-
 #if defined(HAVE_MLOCKALL) && defined(MCL_CURRENT) && !defined(EMBEDDED_LIBRARY)
   if (locked_in_memory && !getuid())
   {

storage/maria/ha_maria.cc

@@ -27,11 +27,16 @@
 #include "ha_maria.h"
 #include "trnman_public.h"
 
+C_MODE_START
 #include "maria_def.h"
 #include "ma_rt_index.h"
 #include "ma_blockrec.h"
-#include "ma_commit.h"
+C_MODE_END
 
+/*
+  Note that in future versions, only *transactional* Maria tables can
+  rollback, so this flag should be up or down conditionally.
+*/
 #define MARIA_CANNOT_ROLLBACK HA_NO_TRANSACTIONS
 #ifdef MARIA_CANNOT_ROLLBACK
 #define trans_register_ha(A, B, C)  do { /* nothing */ } while(0)
@@ -2384,7 +2389,7 @@ static int ha_maria_init(void *p)
   maria_hton->flags= HTON_CAN_RECREATE | HTON_SUPPORT_LOG_TABLES;
   bzero(maria_log_pagecache, sizeof(*maria_log_pagecache));
   maria_data_root= mysql_real_data_home;
-  res= maria_init() || ma_control_file_create_or_open(TRUE) ||
+  res= maria_init() || ma_control_file_create_or_open() ||
     (init_pagecache(maria_log_pagecache,
                     TRANSLOG_PAGECACHE_SIZE, 0, 0,
                     TRANSLOG_PAGE_SIZE) == 0) ||

storage/maria/ma_bitmap.c

@@ -512,15 +512,19 @@ static my_bool _ma_read_bitmap_page(MARIA_SHARE *share,
                                     MARIA_FILE_BITMAP *bitmap,
                                     ulonglong page)
 {
-  my_off_t position= page * bitmap->block_size;
+  my_off_t end_of_page= (page + 1) * bitmap->block_size;
   my_bool res;
   DBUG_ENTER("_ma_read_bitmap_page");
   DBUG_ASSERT(page % bitmap->pages_covered == 0);
 
   bitmap->page= page;
-  if (position >= share->state.state.data_file_length)
+  if (end_of_page > share->state.state.data_file_length)
   {
-    share->state.state.data_file_length= position + bitmap->block_size;
+    /*
+      Inexistent or half-created page (could be crash in the middle of
+      _ma_bitmap_create_first(), before appending maria_bitmap_marker).
+    */
+    share->state.state.data_file_length= end_of_page;
     bzero(bitmap->map, bitmap->block_size);
     memcpy(bitmap->map + bitmap->block_size - sizeof(maria_bitmap_marker),
            maria_bitmap_marker, sizeof(maria_bitmap_marker));
@@ -2047,7 +2051,8 @@ int _ma_bitmap_create_first(MARIA_SHARE *share)
 { 
   uint block_size= share->bitmap.block_size;
   File file= share->bitmap.file.file;
-  if (my_chsize(file, block_size, 0, MYF(MY_WME)) ||
+  if (my_chsize(file, block_size - sizeof(maria_bitmap_marker),
+                0, MYF(MY_WME)) ||
       my_pwrite(file, maria_bitmap_marker, sizeof(maria_bitmap_marker),
                 block_size - sizeof(maria_bitmap_marker),
                 MYF(MY_NABP | MY_WME)))

storage/maria/ma_check.c

@@ -2046,15 +2046,8 @@ int maria_repair(HA_CHECK *param, register MARIA_HA *info,
           goto err;
       }
       _ma_reset_status(sort_info.new_info);
-#ifdef ASK_MONTY /* cf maria_create() */
-      /**
-         @todo ASK_MONTY
-         without this call, a REPAIR on an empty table leaves the data file of
-         size 0, which sounds reasonable.
-      */
       if (_ma_initialize_data_file(sort_info.new_info->s, new_file))
         goto err;
-#endif
       block_record= 1;
     }
   }

storage/maria/ma_commit.c

@@ -28,8 +28,13 @@
 
 int ma_commit(TRN *trn)
 {
+  int res;
+  LSN commit_lsn;
+  LEX_STRING log_array[TRANSLOG_INTERNAL_PARTS];
+  DBUG_ENTER("ma_commit");
+
   if (trn->undo_lsn == 0) /* no work done, rollback (cheaper than commit) */
-    return trnman_rollback_trn(trn);
+    DBUG_RETURN(trnman_rollback_trn(trn));
   /*
     - if COMMIT record is written before trnman_commit_trn():
     if Checkpoint comes in the middle it will see trn is not committed,
@@ -45,27 +50,75 @@ int ma_commit(TRN *trn)
     issue (transaction's updates were made visible to other transactions).
     So we need to go the first way.
   */
+
   /**
      @todo RECOVERY share's state is written to disk only in
      maria_lock_database(), so COMMIT record is not the last record of the
      transaction! It is probably an issue. Recovery of the state is a problem
      not yet solved.
   */
-  LSN commit_lsn;
-  LEX_STRING log_array[TRANSLOG_INTERNAL_PARTS];
   /*
     We do not store "thd->transaction.xid_state.xid" for now, it will be
     needed only when we support XA.
   */
-  return
-    translog_write_record(&commit_lsn, LOGREC_COMMIT,
+  res= (translog_write_record(&commit_lsn, LOGREC_COMMIT,
                               trn, NULL, 0,
                               sizeof(log_array)/sizeof(log_array[0]),
                               log_array, NULL) ||
-    translog_flush(commit_lsn) || trnman_commit_trn(trn);
+        translog_flush(commit_lsn) ||
+        trnman_commit_trn(trn));
   /*
     Note: if trnman_commit_trn() fails above, we have already
     written the COMMIT record, so Checkpoint and Recovery will see the
     transaction as committed.
   */
+  DBUG_RETURN(res);
+}
+
+
+/**
+   @brief Writes a COMMIT record for a transaciton associated with a file
+
+   @param  info              Maria handler
+
+   @return Operation status
+     @retval 0      ok
+     @retval #      error (disk error or out of memory)
+*/
+
+int maria_commit(MARIA_HA *info)
+{
+  return info->s->now_transactional ? ma_commit(info->trn) : 0;
+}
+
+
+/**
+   @brief Starts a transaction on a file handle
+
+   @param  info              Maria handler
+
+   @return Operation status
+     @retval 0      ok
+     @retval #      Error code.
+*/
+
+
+int maria_begin(MARIA_HA *info)
+{
+  DBUG_ENTER("maria_begin");
+
+  if (info->s->now_transactional)
+  {
+    TRN *trn;
+    struct st_my_thread_var *mysys_var= my_thread_var;
+    trn= trnman_new_trn(&mysys_var->mutex,
+                        &mysys_var->suspend,
+                        (char*) &mysys_var + STACK_DIRECTION *1024*128);
+    if (unlikely(!trn))
+      DBUG_RETURN(HA_ERR_OUT_OF_MEM);
+
+    DBUG_PRINT("info", ("TRN set to 0x%lx", (ulong) trn));
+    info->trn= trn;
+  }
+  DBUG_RETURN(0);
 }

storage/maria/ma_control_file.c

@@ -41,6 +41,10 @@
 #define CONTROL_FILE_SIZE (CONTROL_FILE_FILENO_OFFSET + CONTROL_FILE_FILENO_SIZE)
 
 /* This module owns these two vars. */
+/**
+   This LSN serves for the two-checkpoint rule, and also to find the
+   checkpoint record when doing a recovery.
+*/
 LSN    last_checkpoint_lsn= LSN_IMPOSSIBLE;
 uint32 last_logno=          FILENO_IMPOSSIBLE;
 
@@ -68,8 +72,6 @@ static int control_file_fd= -1;
   the last_checkpoint_lsn and last_logno global variables.
   Called at engine's start.
 
-  @param  create_if_missing
-
   @note
   The format of the control file is:
   4 bytes: magic string
@@ -78,11 +80,13 @@ static int control_file_fd= -1;
   4 bytes: offset in log where last checkpoint is
   4 bytes: number of last log
 
+  @note If in recovery, file is not created
+
   @return Operation status
     @retval 0      OK
     @retval 1      Error (in which case the file is left closed)
 */
-CONTROL_FILE_ERROR ma_control_file_create_or_open(my_bool create_if_missing)
+CONTROL_FILE_ERROR ma_control_file_create_or_open()
 {
   char buffer[CONTROL_FILE_SIZE];
   char name[FN_REFLEN];
@@ -111,7 +115,8 @@ CONTROL_FILE_ERROR ma_control_file_create_or_open(my_bool create_if_missing)
 
   if (create_file)
   {
-    if (!create_if_missing)
+    /* in a recovery, we expect to find a control file */
+    if (maria_in_recovery)
       DBUG_RETURN(CONTROL_FILE_MISSING);
     if ((control_file_fd= my_create(name, 0,
                                     open_flags, MYF(MY_SYNC_DIR))) < 0)

storage/maria/ma_control_file.h

@@ -61,7 +61,7 @@ extern "C" {
   If present, reads it to find out last checkpoint's LSN and last log.
   Called at engine's start.
 */
-CONTROL_FILE_ERROR ma_control_file_create_or_open(my_bool);
+CONTROL_FILE_ERROR ma_control_file_create_or_open();
 /*
   Write information durably to the control file.
   Called when we have created a new log (after syncing this log's creation)

storage/maria/ma_create.c

@@ -664,6 +664,14 @@ int maria_create(const char *name, enum data_file_type datafile_type,
 
   share.base.keystart = share.state.state.key_file_length=
     MY_ALIGN(info_length, maria_block_size);
+  if (share.data_file_type == BLOCK_RECORD)
+  {
+    /*
+      we are going to create a first bitmap page, set data_file_length
+      to reflect this, before the state goes to disk
+    */
+    share.state.state.data_file_length= maria_block_size;
+  }
   share.base.max_key_block_length= maria_block_size;
   share.base.max_key_length=ALIGN_SIZE(max_key_length+4);
   share.base.records=ci->max_rows;
@@ -1041,36 +1049,8 @@ int maria_create(const char *name, enum data_file_type datafile_type,
       goto err;
     errpos=3;
 
-    /**
-       @todo ASK_MONTY
-      QQ: this sets data_file_length from 0 to 8192, but we wrote the state
-      already to the index file (because:
-      - log record is built from index header so state must be written before
-      log record
-      - data file must be created after log record, so that "missing log
-      record" implies "unusable table").
-      When we wrote the state, we hadn't called ma_initialize_data_file(), so
-      the data_file_length is 0!
-      Thus, we below create a 8192-byte data file, but its recorded size is 0,
-      so next time we read the bitmap (a maria_write() for example) we'll
-      overwrite the bitmap we just created below.
-      It's not very efficient.
-      It also makes maria_chk_size() print
-      Size of datafile is: 8192       Should be: 0
-      on a freshly created table (run "check.test" with a Maria table).
-
-      Why do we absolutely want to create a 8192-byte page for a freshly
-      created, empty table? Why don't we leave the data file empty?
-      Removing the call below at least removes the maria_chk_size() issue.
-
-      Monty wrote on IRC, about a size of 0:
-      "This basically ok;  The first block is a bitmap that may or may not
-      exists", but later he asked that the first block always exists.???
-    */
-#ifdef ASK_MONTY
     if (_ma_initialize_data_file(&share, dfile))
       goto err;
-#endif
   }
 
 	/* Enlarge files */

storage/maria/ma_loghandler.c

@@ -159,7 +159,7 @@ struct st_translog_descriptor
   LSN flushed;
   /* Last LSN sent to the disk (but maybe not written yet) */
   LSN sent_to_file;
-  /* All what is after this addess is not sent to disk yet */
+  /* All what is after this address is not sent to disk yet */
   TRANSLOG_ADDRESS in_buffers_only;
   pthread_mutex_t sent_to_file_lock;
 
@@ -306,13 +306,9 @@ static LOG_DESC INIT_LOGREC_REDO_PURGE_ROW_TAIL=
  NULL, write_hook_for_redo, NULL, 0,
  "redo_purge_row_tail", LOGREC_NOT_LAST_IN_GROUP, NULL, NULL};
 
-/* QQQ: TODO: variable and fixed size??? */
 static LOG_DESC INIT_LOGREC_REDO_PURGE_BLOCKS=
-{LOGRECTYPE_VARIABLE_LENGTH,
- FILEID_STORE_SIZE + PAGERANGE_STORE_SIZE +
- PAGE_STORE_SIZE + PAGERANGE_STORE_SIZE,
- FILEID_STORE_SIZE + PAGERANGE_STORE_SIZE +
- PAGE_STORE_SIZE + PAGERANGE_STORE_SIZE,
+{LOGRECTYPE_VARIABLE_LENGTH, 0,
+ FILEID_STORE_SIZE + PAGERANGE_STORE_SIZE,
  NULL, write_hook_for_redo, NULL, 0,
  "redo_purge_blocks", LOGREC_NOT_LAST_IN_GROUP, NULL, NULL};
 
@@ -682,7 +678,7 @@ static my_bool translog_max_lsn_to_header(File file, LSN lsn)
 typedef struct st_loghandler_file_info
 {
   /*
-    LSN_IPOSSIBLE for current file and max LSN which parts stored in the
+    LSN_IMPOSSIBLE for current file and max LSN which parts stored in the
     file for all other (finished) files.
   */
   LSN max_lsn;
@@ -824,7 +820,7 @@ static void translog_mark_file_unfinished(uint32 file)
     goto end;
   }
 
-  for (place= log_descriptor.unfinished_files.elements;
+  for (place= log_descriptor.unfinished_files.elements - 1;
        place >= 0;
        place--)
   {
@@ -5301,6 +5297,7 @@ translog_get_next_chunk(TRANSLOG_SCANNER_DATA *scanner)
    @param buff            Buffer to be filled with header data
    @param scanner         If present should be moved to the header page if
                           it differ from LSN page
+
    @return                Length of header or operation status
      @retval RECHEADER_READ_ERROR  error
      @retval #                     number of bytes in
@@ -5323,7 +5320,6 @@ int translog_variable_length_header(uchar *page, translog_size_t page_offset,
   uint16 buffer_length= length;
   uint16 body_len;
   TRANSLOG_SCANNER_DATA internal_scanner;
-
   DBUG_ENTER("translog_variable_length_header");
 
   buff->record_length= translog_variable_record_1group_decode_len(&src);
@@ -6174,7 +6170,7 @@ static my_bool write_hook_for_redo(enum translog_record_type type
     non-transactional log records (REPAIR, CREATE, RENAME, DROP) should not
     call this hook; we trust them but verify ;)
   */
-  DBUG_ASSERT(!(maria_multi_threaded && (trn->trid == 0)));
+  DBUG_ASSERT(trn->trid != 0);
   /*
     If the hook stays so simple, it would be faster to pass
     !trn->rec_lsn ? trn->rec_lsn : some_dummy_lsn
@@ -6203,7 +6199,7 @@ static my_bool write_hook_for_undo(enum translog_record_type type
                                    struct st_translog_parts *parts
                                    __attribute__ ((unused)))
 {
-  DBUG_ASSERT(!(maria_multi_threaded && (trn->trid == 0)));
+  DBUG_ASSERT(trn->trid != 0);
   trn->undo_lsn= *lsn;
   if (unlikely(LSN_WITH_FLAGS_TO_LSN(trn->first_undo_lsn) == 0))
     trn->first_undo_lsn=
@@ -6316,6 +6312,17 @@ void translog_deassign_id_from_share(MARIA_SHARE *share)
 }
 
 
+void translog_assign_id_to_share_from_recovery(MARIA_SHARE *share,
+                                               uint16 id)
+{
+  DBUG_ASSERT(maria_in_recovery && !maria_multi_threaded);
+  DBUG_ASSERT(share->data_file_type == BLOCK_RECORD);
+  DBUG_ASSERT(share->id == 0);
+  DBUG_ASSERT(id_to_share[id] == NULL);
+  id_to_share[share->id= id]= share;
+}
+
+
 /**
    @brief check if such log file exists
 

storage/maria/ma_loghandler.h

@@ -260,6 +260,9 @@ extern TRANSLOG_ADDRESS translog_get_horizon();
 extern int translog_assign_id_to_share(struct st_maria_share *share,
                                        struct st_transaction *trn);
 extern void translog_deassign_id_from_share(struct st_maria_share *share);
+extern void
+translog_assign_id_to_share_from_recovery(struct st_maria_share *share,
+                                          uint16 id);
 extern my_bool translog_inited;
 
 /*

storage/maria/ma_loghandler_lsn.h

@@ -84,6 +84,9 @@ typedef LSN LSN_WITH_FLAGS;
 /* following LSN also is impossible */
 #define LSN_ERROR             1
 
+/** @brief some impossible LSN serve as markers */
+#define LSN_REPAIRED_BY_MARIA_CHK ((LSN)1)
+
 /**
    @brief the maximum valid LSN.
    Unlike ULONGLONG_MAX, it can be safely used in comparison with valid LSNs

storage/maria/ma_open.c

@@ -171,7 +171,8 @@ static MARIA_HA *maria_clone_internal(MARIA_SHARE *share, int mode,
     share->delay_key_write=1;
 
   info.state= &share->state.state;	/* Change global values by default */
-  info.trn=   &dummy_transaction_object;
+  if (!share->base.born_transactional)   /* but for transactional ones ... */
+    info.trn= &dummy_transaction_object; /* ... force crash if no trn given */
   pthread_mutex_unlock(&share->intern_lock);
 
   /* Allocate buffer for one record */
@@ -600,18 +601,35 @@ MARIA_HA *maria_open(const char *name, int mode, uint open_flags)
     if (share->base.born_transactional)
     {
       share->page_type= PAGECACHE_LSN_PAGE;
+#ifdef ENABLE_WHEN_WE_HAVE_TRANS_ROW_ID         /* QQ */
       share->base_length+= TRANS_ROW_EXTRA_HEADER_SIZE;
-      if (unlikely((share->state.create_rename_lsn == (LSN)ULONGLONG_MAX) &&
-                   (open_flags & HA_OPEN_FROM_SQL_LAYER)))
+#endif
+      if (share->state.create_rename_lsn == LSN_REPAIRED_BY_MARIA_CHK)
       {
         /*
-          This table was repaired with maria_chk. Past log records should be
-          ignored, future log records should not: we define the present.
+          Was repaired with maria_chk, maybe later maria_pack-ed. Some sort of
+          import into the server. It starts its existence (from the point of
+          view of the server, including server's recovery) now.
         */
+        if ((open_flags & HA_OPEN_FROM_SQL_LAYER) || maria_in_recovery)
+        {
           share->state.create_rename_lsn= translog_get_horizon();
           _ma_update_create_rename_lsn_on_disk(share, TRUE);
         }
       }
+      else if (!LSN_VALID(share->state.create_rename_lsn) &&
+               !(open_flags & HA_OPEN_FOR_REPAIR))
+      {
+        /*
+          If in Recovery, it will not work. If LSN is invalid and not
+          LSN_REPAIRED_BY_MARIA_CHK, header must be corrupted.
+          In both cases, must repair.
+        */
+        my_errno=((share->state.changed & STATE_CRASHED_ON_REPAIR) ?
+                  HA_ERR_CRASHED_ON_REPAIR : HA_ERR_CRASHED_ON_USAGE);
+        goto err;
+      }
+    }
     else
       share->page_type= PAGECACHE_PLAIN_PAGE;
     share->now_transactional= share->base.born_transactional;
@@ -699,6 +717,14 @@ MARIA_HA *maria_open(const char *name, int mode, uint open_flags)
       {
 	share->lock.get_status=_ma_get_status;
 	share->lock.copy_status=_ma_copy_status;
+        /**
+           @todo RECOVERY
+           INSERT DELAYED and concurrent inserts are currently disabled for
+           transactional tables; when enabled again, we should re-evaluate
+           what problems the call to _ma_update_status() by
+           thr_reschedule_write_lock() can do (it may hurt Checkpoint as it
+           would be without intern_lock, and it modifies the state).
+        */
 	share->lock.update_status=_ma_update_status;
 	share->lock.restore_status=_ma_restore_status;
 	share->lock.check_status=_ma_check_status;
@@ -958,6 +984,7 @@ uint _ma_state_info_write(File file, MARIA_STATE_INFO *state, uint pWrite)
   uchar  buff[MARIA_STATE_INFO_SIZE + MARIA_STATE_EXTRA_SIZE];
   uchar *ptr=buff;
   uint	i, keys= (uint) state->header.keys;
+  size_t res;
   DBUG_ENTER("_ma_state_info_write");
 
   memcpy_fixed(ptr,&state->header,sizeof(state->header));
@@ -1013,11 +1040,12 @@ uint _ma_state_info_write(File file, MARIA_STATE_INFO *state, uint pWrite)
     }
   }
 
-  if (pWrite & 1)
-    DBUG_RETURN(my_pwrite(file, buff, (size_t) (ptr-buff), 0L,
-			  MYF(MY_NABP | MY_THREADSAFE)) != 0);
-  DBUG_RETURN(my_write(file, buff, (size_t) (ptr-buff),
-		       MYF(MY_NABP)) != 0);
+  res= (pWrite & 1) ?
+    my_pwrite(file, buff, (size_t) (ptr-buff), 0L,
+              MYF(MY_NABP | MY_THREADSAFE)) :
+    my_write(file,  buff, (size_t) (ptr-buff),
+             MYF(MY_NABP));
+  DBUG_RETURN(res != 0);
 }
 
 
@@ -1072,6 +1100,16 @@ uchar *_ma_state_info_read(uchar *ptr, MARIA_STATE_INFO *state)
 }
 
 
+/**
+   @brief Fills the state by reading its copy on disk.
+
+   @note Does nothing in single user mode.
+
+   @param  file            file to read from
+   @param  state           state which will be filled
+   @param  pRead           if true, use my_pread(), otherwise my_read()
+*/
+
 uint _ma_state_info_read_dsk(File file, MARIA_STATE_INFO *state, my_bool pRead)
 {
   char	buff[MARIA_STATE_INFO_SIZE + MARIA_STATE_EXTRA_SIZE];

storage/maria/ma_recovery.h

@@ -25,5 +25,6 @@
 
 C_MODE_START
 int maria_recover();
-int maria_apply_log(LSN lsn, my_bool applyn, FILE *trace_file);
+int maria_apply_log(LSN lsn, my_bool apply, FILE *trace_file,
+                    my_bool execute_undo_phase);
 C_MODE_END

storage/maria/ma_test1.c

@@ -66,7 +66,8 @@ int main(int argc,char *argv[])
                       TRANSLOG_PAGE_SIZE) == 0) ||
       translog_init(maria_data_root, TRANSLOG_FILE_SIZE,
                     0, 0, maria_log_pagecache,
-                    TRANSLOG_DEFAULT_FLAGS))
+                    TRANSLOG_DEFAULT_FLAGS) ||
+      (transactional && trnman_init()))
   {
     fprintf(stderr, "Error in initialization");
     exit(1);
@@ -180,6 +181,8 @@ static int run_test(const char *filename)
   if (!silent)
     printf("- Writing key:s\n");
 
+  if (maria_begin(file))
+    goto err;
   my_errno=0;
   row_count=deleted=0;
   for (i=49 ; i>=1 ; i-=2 )
@@ -266,8 +269,14 @@ static int run_test(const char *filename)
 
   if (!silent)
     printf("- Reopening file\n");
-  if (maria_close(file)) goto err;
-  if (!(file=maria_open(filename,2,HA_OPEN_ABORT_IF_LOCKED))) goto err;
+  if (maria_commit(file))
+    goto err;
+  if (maria_close(file))
+    goto err;
+  if (!(file=maria_open(filename,2,HA_OPEN_ABORT_IF_LOCKED)))
+    goto err;
+  if (maria_begin(file))
+    goto err;
   if (!skip_delete)
   {
     if (!silent)
@@ -354,6 +363,8 @@ static int run_test(const char *filename)
 	     i-1,error,my_errno,read_record+1);
     }
   }
+  if (maria_commit(file))
+    goto err;
   if (maria_close(file))
     goto err;
   maria_end();
@@ -622,7 +633,7 @@ static struct my_option my_long_options[] =
    0, 0, 0, 0, 0, 0},
   {"unique", 'C', "Undocumented", (uchar**) &opt_unique,
    (uchar**) &opt_unique, 0, GET_BOOL, NO_ARG, 0, 0, 0, 0, 0, 0},
-  {"update-rows", 'u', "Undocumented", (uchar**) &update_count,
+  {"update-rows", 'u', "Max number of rows to update", (uchar**) &update_count,
    (uchar**) &update_count, 0, GET_UINT, REQUIRED_ARG, 1000, 0, 0, 0, 0, 0},
   {"verbose", 'v', "Be more verbose", (uchar**) &verbose,
    (uchar**) &verbose, 0, GET_BOOL, NO_ARG, 0, 0, 0, 0, 0, 0},

storage/maria/ma_test2.c

@@ -244,13 +244,15 @@ int main(int argc, char *argv[])
   if (opt_quick_mode)
     maria_extra(file,HA_EXTRA_QUICK,0);
 
+  maria_begin(file);
+
   for (i=0 ; i < recant ; i++)
   {
     ulong blob_length;
 #if 0
     /*
       Starting from i==72, there was a difference between runtime and
-      log-appplying. This is now fixed, by not using non_header_data_len in
+      log-applying. This is now fixed, by not using non_header_data_len in
       log-applying.
     */
     if (i == 72) goto end;
@@ -890,8 +892,14 @@ int main(int argc, char *argv[])
     goto err;
   }
 end:
+  if (maria_commit(file))
+    goto err;
   if (maria_close(file))
+  {
+    file= 0;
     goto err;
+  }
+  file= 0;
   maria_panic(HA_PANIC_CLOSE);			/* Should close log */
   if (!silent)
   {
@@ -933,7 +941,11 @@ reads:      %10lu\n",
 err:
   printf("got error: %d when using MARIA-database\n",my_errno);
   if (file)
+  {
+    if (maria_commit(file))
+      goto err;
     VOID(maria_close(file));
+  }
   maria_end();
   return(1);
 } /* main */

storage/maria/ma_test_all.sh

@@ -143,6 +143,10 @@ run_repair_tests()
   $maria_path/maria_chk$suffix -se test2
   $maria_path/maria_chk$suffix -s --parallel-recover --quick test2
   $maria_path/maria_chk$suffix -se test2
+  $maria_path/ma_test2$suffix $silent -c $row_type
+  $maria_path/maria_chk$suffix -se test2
+  $maria_path/maria_chk$suffix -sr test2
+  $maria_path/maria_chk$suffix -se test2
 }
 
 run_pack_tests()

storage/maria/ma_test_recovery

+#!/bin/sh
+
 set -e
 silent="-s"
 if [ -z "$maria_path" ]
@@ -5,6 +7,13 @@ then
     maria_path="."
 fi
 
+tmp=$maria_path/tmp
+
+if test '!' -d $tmp
+then
+  mkdir $tmp
+fi
+
 echo "MARIA RECOVERY TESTS - success is if exit code is 0"
 
 # runs a program inserting/deleting rows, then moves the resulting table
@@ -12,30 +21,44 @@ echo "MARIA RECOVERY TESTS - success is if exit code is 0"
 # identical to the saved original.
 # Does not test the index file as we don't have logging for it yet.
 
-for prog in "$maria_path/ma_test1 $silent -M -T --skip-update -c" "$maria_path/ma_test2 $silent -L -K -W -P -M -T -g -c"
+for prog in "$maria_path/ma_test1 $silent -M -T -c" "$maria_path/ma_test2 $silent -L -K -W -P -M -T -c" "$maria_path/ma_test2 $silent -M -T -c -b"
 do
-  rm -f maria_log*
+  rm -f maria_log.* maria_log_control
   echo "TEST WITH $prog"
   $prog
   # derive table's name from program's name
   table=`echo $prog | sed -e 's;.*ma_\(test[0-9]\).*;\1;' `
-  $maria_path/maria_chk -dvv $table > maria_chk_message.good.txt 2>&1
-  mv -f $table.MAD $table.MAD.good
+  $maria_path/maria_chk -dvv $table > $tmp/maria_chk_message.good.txt 2>&1
+  checksum=`$maria_path/maria_chk -dss $table`
+  mv -f $table.MAD $tmp/$table.MAD.good
   rm $table.MAI
   echo "applying log"
-  $maria_path/maria_read_log -a > maria_read_log_$table.txt
-  cmp $table.MAD $table.MAD.good
-  $maria_path/maria_chk -dvv $table > maria_chk_message.txt 2>&1
+  $maria_path/maria_read_log -a > $tmp/maria_read_log_$table.txt
+  $maria_path/maria_chk -dvv $table > $tmp/maria_chk_message.txt 2>&1
+
+  cmp $table.MAD $tmp/$table.MAD.good
+
+  # QQ: Remove the following line when we also can recovert the index file
+  $maria_path/maria_chk -s -r $table
+
+  $maria_path/maria_chk -s -e $table
+  checksum2=`$maria_path/maria_chk -dss $table`
+  if test "$checksum" != "$checksum2"
+  then
+   echo "checksum differs for $table before and after recovery"
+   exit 1;
+  fi
+
 # When "recovery of the table's state" is ready, we can test it like this:
-#  diff maria_chk_message.good.txt maria_chk_message.txt >maria_chk_diff.txt || true
-#  if [ -s maria_chk_diff.txt ]
+#  diff $tmp/maria_chk_message.good.txt $tmp/maria_chk_message.txt > $tmp/maria_chk_diff.txt || true
+#  if [ -s $tmp/maria_chk_diff.txt ]
 #      then
 #      echo "Differences in maria_chk -dvv, recovery not yet perfect !"
 #      echo "========DIFF START======="
-#      cat maria_chk_diff.txt
+#      cat $tmp/maria_chk_diff.txt
 #      echo "========DIFF END======="
 #  fi
-  rm -f $table.* maria_chk_*.txt maria_read_log_$table.txt
+  rm -f $table.* $tmp/maria_chk_*.txt $tmp/maria_read_log_$table.txt
 done
 
 echo "ALL RECOVERY TESTS OK"

storage/maria/maria_chk.c

@@ -115,7 +115,7 @@ int main(int argc, char **argv)
 	(!(check_param.testflag & (T_REP | T_REP_BY_SORT | T_SORT_RECORDS |
 				   T_SORT_INDEX))))
     {
-      uint old_testflag=check_param.testflag;
+      ulonglong old_testflag=check_param.testflag;
       if (!(check_param.testflag & T_REP))
 	check_param.testflag|= T_REP_BY_SORT;
       check_param.testflag&= ~T_EXTEND;			/* Don't needed  */
@@ -126,7 +126,8 @@ int main(int argc, char **argv)
     }
     else
       error|=new_error;
-    if (argc && (!(check_param.testflag & T_SILENT) || check_param.testflag & T_INFO))
+    if (argc && (!(check_param.testflag & T_SILENT) ||
+                 check_param.testflag & T_INFO))
     {
       puts("\n---------\n");
       VOID(fflush(stdout));
@@ -1034,7 +1035,7 @@ static int maria_chk(HA_CHECK *param, char *filename)
         that it will have to find and store it.
       */
       if (share->base.born_transactional)
-        share->state.create_rename_lsn= (LSN)ULONGLONG_MAX;
+        share->state.create_rename_lsn= LSN_REPAIRED_BY_MARIA_CHK;
       if ((param->testflag & (T_REP_BY_SORT | T_REP_PARALLEL)) &&
           (maria_is_any_key_active(share->state.key_map) ||
            (rep_quick && !param->keys_in_use && !recreate)) &&
@@ -1236,6 +1237,16 @@ static void descript(HA_CHECK *param, register MARIA_HA *info, char *name)
   char llbuff[22],llbuff2[22];
   DBUG_ENTER("describe");
 
+  if (param->testflag & T_VERY_SILENT)
+  {
+    longlong checksum= info->state->checksum;
+    if (!(share->options & (HA_OPTION_CHECKSUM | HA_OPTION_COMPRESS_RECORD)))
+      checksum= 0;
+    printf("%s %s %s\n", name, llstr(info->state->records,llbuff),
+           llstr(checksum, llbuff2));
+    DBUG_VOID_RETURN;
+  }
+
   printf("\nMARIA file:          %s\n",name);
   printf("Record format:       %s\n", record_formats[share->data_file_type]);
   printf("Character set:       %s (%d)\n",

storage/maria/maria_def.h

@@ -894,6 +894,7 @@ void _ma_restore_status(void *param);
 void _ma_copy_status(void *to, void *from);
 my_bool _ma_check_status(void *param);
 void _ma_reset_status(MARIA_HA *maria);
+#include "ma_commit.h"
 
 extern MARIA_HA *_ma_test_if_reopen(char *filename);
 my_bool _ma_check_table_is_closed(const char *name, const char *where);

storage/maria/maria_read_log.c

@@ -51,7 +51,7 @@ int main(int argc, char **argv)
     goto err;
   }
   /* we don't want to create a control file, it MUST exist */
-  if (ma_control_file_create_or_open(FALSE))
+  if (ma_control_file_create_or_open())
   {
     fprintf(stderr, "Can't open control file (%d)\n", errno);
     goto err;
@@ -93,7 +93,8 @@ int main(int argc, char **argv)
   */
 
   fprintf(stdout, "TRACE of the last maria_read_log\n");
-  if (maria_apply_log(lsn, opt_display_and_apply, stdout))
+  /* Until we have UNDO records, no UNDO phase */
+  if (maria_apply_log(lsn, opt_display_and_apply, stdout, FALSE))
     goto err;
   fprintf(stdout, "%s: SUCCESS\n", my_progname);
 
@@ -113,6 +114,8 @@ end:
 
 static struct my_option my_long_options[] =
 {
+  {"help", '?', "Display this help and exit.",
+   0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0},
   {"only-display", 'o', "display brief info about records's header",
    (uchar **) &opt_only_display, (uchar **) &opt_only_display, 0, GET_BOOL,
    NO_ARG,0, 0, 0, 0, 0, 0},
@@ -161,6 +164,9 @@ get_one_option(int optid __attribute__((unused)),
                char *argument __attribute__((unused)))
 {
   switch (optid) {
+  case '?':
+    usage();
+    exit(0);
 #ifndef DBUG_OFF
   case '#':
     DBUG_SET_INITIAL(argument ? argument : default_dbug_option);

storage/maria/trnman.c

@@ -18,6 +18,7 @@
 #include <my_sys.h>
 #include <m_string.h>
 #include "trnman.h"
+#include "ma_control_file.h"
 
 /*
   status variables:
@@ -708,3 +709,29 @@ end:
   pthread_mutex_unlock(&LOCK_trn_list);
   DBUG_RETURN(error);
 }
+
+
+TRN *trnman_recreate_trn_from_recovery(uint16 shortid, TrID longid)
+{
+  TrID old_trid_generator= global_trid_generator;
+  TRN *trn;
+  DBUG_ASSERT(maria_in_recovery && !maria_multi_threaded);
+  if (unlikely((trn= trnman_new_trn(NULL, NULL, NULL)) == NULL))
+    return NULL;
+  /* deallocate excessive allocations of trnman_new_trn() */
+  global_trid_generator= old_trid_generator;
+  set_if_bigger(global_trid_generator, longid);
+  short_trid_to_active_trn[trn->short_id]= 0;
+  DBUG_ASSERT(short_trid_to_active_trn[shortid] == NULL);
+  short_trid_to_active_trn[shortid]= trn;
+  trn->trid= longid;
+  trn->short_id= shortid;
+  return trn;
+}
+
+
+TRN *trnman_get_any_trn()
+{
+  TRN *trn= active_list_min.next;
+  return (trn != &active_list_max) ? trn : NULL;
+}

storage/maria/trnman_public.h

@@ -53,6 +53,8 @@ uint trnman_increment_locked_tables(TRN *trn);
 uint trnman_decrement_locked_tables(TRN *trn);
 my_bool trnman_has_locked_tables(TRN *trn);
 void trnman_reset_locked_tables(TRN *trn);
+TRN *trnman_recreate_trn_from_recovery(uint16 shortid, TrID longid);
+TRN *trnman_get_any_trn();
 
 C_MODE_END
 #endif