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MDEV-21282 Assertion 'mariadb_table' failed in gcol.innodb_virtual_debug_purge

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- commit ea37b14409 (MDEV-16678) caused
a regression. when purge thread tries to open the table for virtual
column computation, there is no need to acquire MDL for the table.
Because purge thread already hold MDL for the table
This commit is contained in:
Thirunarayanan Balathandayuthapani
2020-06-01 16:24:15 +05:30
parent d88870e6cc
commit de1dbb7180
3 changed files with 54 additions and 1 deletions
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3
sql/sql_class.cc
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@ -4716,7 +4716,8 @@ TABLE *open_purge_table(THD *thd, const char *db, size_t dblen,
DBUG_ASSERT(thd->open_tables == NULL);
DBUG_ASSERT(thd->locked_tables_mode < LTM_PRELOCKED);
Open_table_context ot_ctx(thd, 0);
/* Purge already hold the MDL for the table */
Open_table_context ot_ctx(thd, MYSQL_OPEN_HAS_MDL_LOCK);
TABLE_LIST *tl= (TABLE_LIST*)thd->alloc(sizeof(TABLE_LIST));
LEX_CSTRING db_name= {db, dblen };
LEX_CSTRING table_name= { tb, tblen };