connection node_2; connection node_1; CREATE TABLE t1 (f1 INTEGER PRIMARY KEY, f2 CHAR(1)) engine=innodb; CREATE TABLE t2 (f1 INTEGER PRIMARY KEY, f2 CHAR(1)) engine=innodb; INSERT INTO t1 VALUES (1, 'a'); INSERT INTO t1 VALUES (2, 'a'); connection node_1; SET AUTOCOMMIT=ON; START TRANSACTION; UPDATE t1 SET f2 = 'b' WHERE f1 = 1; connect node_1a, 127.0.0.1, root, , test, $NODE_MYPORT_1; connection node_1a; LOCK TABLE t2 WRITE; connection node_1; SET @@debug_dbug = "d,sync.wsrep_before_mdl_wait"; SELECT * FROM t2;; connection node_1a; SET @@debug_dbug = "d,sync.wsrep_after_BF_victim_lock"; connection node_2; UPDATE t1 SET f2 = 'c' WHERE f1 = 1; connection node_1a; SET @@debug_dbug = ""; SET DEBUG_SYNC = "now SIGNAL signal.wsrep_before_mdl_wait"; SET DEBUG_SYNC = "now SIGNAL signal.wsrep_after_BF_victim_lock"; UNLOCK TABLES; connection node_1; ERROR 40001: Deadlock found when trying to get lock; try restarting transaction SELECT COUNT(*) = 1 FROM t1 WHERE f2 = 'a'; COUNT(*) = 1 1 SELECT COUNT(*) = 1 FROM t1 WHERE f2 = 'c'; COUNT(*) = 1 1 connection node_2; SELECT COUNT(*) = 1 FROM t1 WHERE f2 = 'a'; COUNT(*) = 1 1 SELECT COUNT(*) = 1 FROM t1 WHERE f2 = 'c'; COUNT(*) = 1 1 DROP TABLE t1; DROP TABLE t2; connection node_1a; SET DEBUG_SYNC = "RESET";