WSREP_TO_ISOLATION_BEGIN should be called with the table list.

Author: Nirbhay Choubey

sql/sql_base.cc

@@ -4706,17 +4706,6 @@ bool open_tables(THD *thd, const DDL_options_st &options,
     if (!tbl)
       continue;
 
-    if (WSREP_ON                               &&
-        wsrep_replicate_myisam                 &&
-        tables                                 &&
-        tbl->file->ht == myisam_hton           &&
-        sqlcom_can_generate_row_events(thd)    &&
-        thd->get_command() != COM_STMT_PREPARE &&
-        tables->lock_type >= TL_WRITE_ALLOW_WRITE)
-    {
-      WSREP_TO_ISOLATION_BEGIN(NULL, NULL, tables);
-    }
-
     /* Schema tables may not have a TABLE object here. */
     if (tbl->file->ht->db_type == DB_TYPE_MRG_MYISAM)
     {
@@ -4743,6 +4732,17 @@ bool open_tables(THD *thd, const DDL_options_st &options,
     }
   }
 
+  if (WSREP_ON                                 &&
+      wsrep_replicate_myisam                   &&
+      (*start)                                 &&
+      (*start)->table                          &&
+      (*start)->table->file->ht == myisam_hton &&
+      sqlcom_can_generate_row_events(thd)      &&
+      thd->get_command() != COM_STMT_PREPARE)
+  {
+    WSREP_TO_ISOLATION_BEGIN(NULL, NULL, (*start));
+  }
+
 error:
   THD_STAGE_INFO(thd, stage_after_opening_tables);
   thd_proc_info(thd, 0);

sql/wsrep_mysqld.cc

@@ -1091,7 +1091,6 @@ static bool wsrep_prepare_keys_for_isolation(THD*              thd,
     if (db || table)
     {
         TABLE_LIST tmp_table;
-	MDL_request mdl_request;
 
         memset(&tmp_table, 0, sizeof(tmp_table));
         tmp_table.table_name= (char*)table;
@@ -1683,7 +1682,7 @@ wsrep_grant_mdl_exception(MDL_context *requestor_ctx,
     }
     else if (granted_thd->lex->sql_command == SQLCOM_FLUSH)
     {
-      WSREP_DEBUG("mdl granted over FLUSH BF");
+      WSREP_DEBUG("MDL granted over FLUSH BF");
       ticket->wsrep_report(wsrep_debug);
       mysql_mutex_unlock(&granted_thd->LOCK_wsrep_thd);
       ret = TRUE;
@@ -1698,7 +1697,7 @@ wsrep_grant_mdl_exception(MDL_context *requestor_ctx,
     }
     else if (granted_thd->wsrep_query_state == QUERY_COMMITTING)
     {
-      WSREP_DEBUG("mdl granted, but commiting thd abort scheduled");
+      WSREP_DEBUG("MDL granted, but committing thd abort scheduled");
       ticket->wsrep_report(wsrep_debug);
       mysql_mutex_unlock(&granted_thd->LOCK_wsrep_thd);
       wsrep_abort_thd((void*)request_thd, (void*)granted_thd, 1);