connection node_2; connection node_1; connection node_1; CREATE TABLE t1 (f1 INTEGER PRIMARY KEY) Engine=InnoDB; INSERT INTO t1 VALUES (1), (2), (3); connection node_2; SET SESSION wsrep_trx_fragment_size = 1; START TRANSACTION; INSERT INTO t1 VALUES (4); connection node_1; SELECT COUNT(*) FROM t1; COUNT(*) 3 connect node_2a, 127.0.0.1, root, , test, $NODE_MYPORT_2; connection node_2a; SET GLOBAL DEBUG_DBUG = "d,sync.wsrep_apply_toi"; connect node_1a, 127.0.0.1, root, , test, $NODE_MYPORT_1; connection node_1a; SET GLOBAL DEBUG_DBUG = "d,sync.wsrep_bf_abort"; connection node_1; TRUNCATE TABLE t1; connection node_1a; SET DEBUG_SYNC = "now WAIT_FOR sync.wsrep_bf_abort_reached"; connection node_2a; SET DEBUG_SYNC = "now WAIT_FOR sync.wsrep_apply_toi_reached"; connection node_2; INSERT INTO t1 VALUES (5); connection node_2a; SET SESSION wsrep_sync_wait = 0; SET SESSION wsrep_sync_wait = DEFAULT; SET GLOBAL DEBUG_DBUG = ""; SET DEBUG_SYNC = "now SIGNAL signal.wsrep_apply_toi"; connection node_2; ERROR 40001: Deadlock found when trying to get lock; try restarting transaction connection node_1a; SET SESSION wsrep_sync_wait=0; SET GLOBAL DEBUG_DBUG = "+d,sync.wsrep_log_dummy_write_set"; SET DEBUG_SYNC = "now SIGNAL signal.wsrep_bf_abort"; SET DEBUG_SYNC = "now WAIT_FOR sync.wsrep_log_dummy_write_set_reached"; connection node_1; connection node_2; SET GLOBAL DEBUG_DBUG = ""; SET DEBUG_SYNC = "RESET"; connection node_1; SET GLOBAL DEBUG_DBUG = ""; SET DEBUG_SYNC = "RESET"; DROP TABLE t1;