xap_release_locks_on_dict_stats_table.test

--source include/have_innodb.inc
--source include/have_debug.inc
--source include/have_debug_sync.inc

# Some memory is allocated in dict_stats_save() function for additional sync
# point. The memory is allocated in current_thd->mem_root pool after
# dict_stats_func() arranged new thd and freed after destroy_background_thd()
# attached background thread thd to the current_thd. That's there are
# different thread id's for memory allocation and deallocation, what causes
# the following warnings. This is not an error because the memory is still
# allocated and deallocated by the same thread in pool.
call mtr.add_suppression("bytes freed by");

SET @old_innodb_stats_persistent = @@innodb_stats_persistent;
SET GLOBAL innodb_stats_persistent=1;
CREATE TABLE t ENGINE=InnoDB AS SELECT 1;

SET @old_debug_dbug = @@global.debug_dbug;

XA START 'a';
INSERT INTO mysql.innodb_index_stats SELECT '','' AS table_name,index_name,LAST_UPDATE,stat_name,0 AS stat_value,sample_size,stat_description FROM mysql.innodb_index_stats WHERE table_name='dummy' FOR UPDATE;  # Note the SELECT is empty
SET GLOBAL debug_dbug = "+d,dict_stats_save_exit_notify";
INSERT INTO t VALUES (1);
XA END 'a';
XA PREPARE 'a';

# Locking queue validation will crash the server if the bug is not fixed
SET DEBUG_SYNC="now WAIT_FOR dict_stats_save_finished";
SET @@global.debug_dbug = @old_debug_dbug;
SET DEBUG_SYNC="RESET";
SET GLOBAL innodb_stats_persistent = @old_innodb_stats_persistent;
XA COMMIT 'a';
DROP TABLE t;