CREATE TABLE t1 (f1 INTEGER PRIMARY KEY, f2 CHAR(255)) ENGINE=InnoDB; --connection node_2 SET SESSION wsrep_trx_fragment_size = 1; START TRANSACTION; INSERT INTO t1 VALUES (1, 'x'); --connection node_2a --source include/galera_set_sync_point.inc --connection node_2 --send COMMIT --connection node_2b --sleep 1 SET SESSION wsrep_sync_wait = 0; SELECT COUNT(*) = 0 FROM t1; --connection node_1 SET SESSION wsrep_sync_wait = 0; SET SESSION wsrep_trx_fragment_size = 1; SELECT COUNT(*) = 1 FROM t1; REPLACE INTO t1 VALUES (1,'y'); --connection node_2b SELECT COUNT(*) = 0 FROM t1; --connection node_2a --source include/galera_signal_sync_point.inc --source include/galera_clear_sync_point.inc --connection node_2 --reap SELECT COUNT(*) = 1 FROM t1; DROP TABLE t1;