CREATE TABLE t1 (f1 INTEGER);
LOCK TABLE t1 WRITE;
value prior to RSU:
SHOW STATUS LIKE 'wsrep_desync_count';
Variable_name	Value
wsrep_desync_count	0
SHOW VARIABLES LIKE 'wsrep_desync';
Variable_name	Value
wsrep_desync	OFF
SET SESSION wsrep_sync_wait = 0;
SET SESSION wsrep_osu_method = RSU;
ALTER TABLE t1 ADD COLUMN f2 INTEGER;;
SET SESSION wsrep_sync_wait = 0;
SET SESSION wsrep_osu_method = RSU;
ALTER TABLE t1 ADD COLUMN f3 INTEGER;;
value during RSU:
SHOW STATUS LIKE 'wsrep_desync_count';
Variable_name	Value
wsrep_desync_count	2
SHOW VARIABLES LIKE 'wsrep_desync';
Variable_name	Value
wsrep_desync	OFF
UNLOCK TABLES;
value after RSU:
SHOW STATUS LIKE 'wsrep_desync_count';
Variable_name	Value
wsrep_desync_count	0
SHOW VARIABLES LIKE 'wsrep_desync';
Variable_name	Value
wsrep_desync	OFF
SET GLOBAL wsrep_desync=0;
Warnings:
Warning	1231	'wsrep_desync' is already OFF.
DROP TABLE t1;