Merge 10.1 into 10.2

sql/opt_range.cc

 /* Copyright (c) 2000, 2015, Oracle and/or its affiliates.
-   Copyright (c) 2008, 2015, MariaDB
+   Copyright (c) 2008, 2020, MariaDB
 
    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
@@ -4680,6 +4680,7 @@ TABLE_READ_PLAN *get_best_disjunct_quick(PARAM *param, SEL_IMERGE *imerge,
   double roru_index_costs;
   ha_rows roru_total_records;
   double roru_intersect_part= 1.0;
+  bool only_ror_scans_required= FALSE;
   size_t n_child_scans;
   DBUG_ENTER("get_best_disjunct_quick");
   DBUG_PRINT("info", ("Full table scan cost: %g", read_time));
@@ -4706,6 +4707,9 @@ TABLE_READ_PLAN *get_best_disjunct_quick(PARAM *param, SEL_IMERGE *imerge,
                                              sizeof(TRP_RANGE*)*
                                              n_child_scans)))
     DBUG_RETURN(NULL);
+
+  only_ror_scans_required= !optimizer_flag(param->thd,
+                                      OPTIMIZER_SWITCH_INDEX_MERGE_SORT_UNION);
   /*
     Collect best 'range' scan for each of disjuncts, and, while doing so,
     analyze possibility of ROR scans. Also calculate some values needed by
@@ -4718,7 +4722,8 @@ TABLE_READ_PLAN *get_best_disjunct_quick(PARAM *param, SEL_IMERGE *imerge,
     DBUG_EXECUTE("info", print_sel_tree(param, *ptree, &(*ptree)->keys_map,
                                         "tree in SEL_IMERGE"););
     if (!(*cur_child= get_key_scans_params(param, *ptree, TRUE, FALSE,
-                                           read_time, TRUE)))
+                                           read_time,
+                                           only_ror_scans_required)))
     {
       /*
         One of index scans in this index_merge is more expensive than entire
@@ -5040,7 +5045,7 @@ TABLE_READ_PLAN *merge_same_index_scans(PARAM *param, SEL_IMERGE *imerge,
          index merge retrievals are not well calibrated
     */
     trp= get_key_scans_params(param, *imerge->trees, FALSE, TRUE,
-                              read_time, TRUE);
+                              read_time, FALSE);
   }
 
   DBUG_RETURN(trp); 
@@ -6768,7 +6773,8 @@ TRP_ROR_INTERSECT *get_best_covering_ror_intersect(PARAM *param,
       index_read_must_be_used if TRUE, assume 'index only' option will be set
                              (except for clustered PK indexes)
       read_time    don't create read plans with cost > read_time.
-      ror_scans_required           set to TRUE for index merge
+      only_ror_scans_required         set to TRUE when we are only interested
+                                      in ROR scan
   RETURN
     Best range read plan
     NULL if no plan found or error occurred
@@ -6778,7 +6784,7 @@ static TRP_RANGE *get_key_scans_params(PARAM *param, SEL_TREE *tree,
                                        bool index_read_must_be_used, 
                                        bool update_tbl_stats,
                                        double read_time,
-                                       bool ror_scans_required)
+                                       bool only_ror_scans_required)
 {
   uint idx, UNINIT_VAR(best_idx);
   SEL_ARG *key_to_read= NULL;
@@ -6826,8 +6832,7 @@ static TRP_RANGE *get_key_scans_params(PARAM *param, SEL_TREE *tree,
                                         update_tbl_stats, &mrr_flags,
                                         &buf_size, &cost);
 
-      if (ror_scans_required && !param->is_ror_scan &&
-          !optimizer_flag(param->thd, OPTIMIZER_SWITCH_INDEX_MERGE_SORT_UNION))
+      if (only_ror_scans_required && !param->is_ror_scan)
       {
         /* The scan is not a ROR-scan, just skip it */
         continue;

sql/wsrep_mysqld.cc

@@ -259,6 +259,17 @@ static void wsrep_log_cb(wsrep_log_level_t level, const char *msg) {
   }
 }
 
+void wsrep_log(void (*fun)(const char *, ...), const char *format, ...)
+{
+  va_list args;
+  char msg[1024];
+  va_start(args, format);
+  vsnprintf(msg, sizeof(msg) - 1, format, args);
+  va_end(args);
+  (fun)("WSREP: %s", msg);
+}
+
+
 static void wsrep_log_states (wsrep_log_level_t   const level,
                               const wsrep_uuid_t* const group_uuid,
                               wsrep_seqno_t       const group_seqno,

sql/wsrep_mysqld.h

@@ -203,13 +203,8 @@ extern wsrep_seqno_t wsrep_locked_seqno;
     ? wsrep_forced_binlog_format : (ulong)(my_format))
 
 // prefix all messages with "WSREP"
-#define WSREP_LOG(fun, ...)                                       \
-    do {                                                          \
-        char msg[1024] = {'\0'};                                  \
-        snprintf(msg, sizeof(msg) - 1, ## __VA_ARGS__);           \
-        fun("WSREP: %s", msg);                                    \
-    } while(0)
-
+void wsrep_log(void (*fun)(const char *, ...), const char *format, ...);
+#define WSREP_LOG(fun, ...) wsrep_log(fun,  ## __VA_ARGS__)
 #define WSREP_LOG_CONFLICT_THD(thd, role)                                      \
     WSREP_LOG(sql_print_information, 	                                       \
       "%s: \n "       	                                                       \

storage/maria/ma_pagecrc.c

@@ -251,7 +251,8 @@ my_bool maria_page_crc_check_index(int res, PAGECACHE_IO_HOOK_ARGS *args)
   if (length > share->block_size - CRC_SIZE)
   {
     DBUG_PRINT("error", ("Wrong page length: %u", length));
-    return (my_errno= HA_ERR_WRONG_CRC);
+    my_errno= HA_ERR_WRONG_CRC;
+    return 1;
   }
   return maria_page_crc_check(page, (uint32) page_no, share,
                                MARIA_NO_CRC_NORMAL_PAGE,