connection node_2; connection node_1; connection node_1; CREATE TABLE t1 (f1 INTEGER PRIMARY KEY) ENGINE=InnoDB; SET SESSION wsrep_trx_fragment_size = 1; SET AUTOCOMMIT=OFF; START TRANSACTION; INSERT INTO t1 VALUES (1); INSERT INTO t1 VALUES (2); INSERT INTO t1 VALUES (3); INSERT INTO t1 VALUES (4); INSERT INTO t1 VALUES (5); connection node_2; SET SESSION TRANSACTION ISOLATION LEVEL READ UNCOMMITTED; INSERT INTO t1 VALUES(1);; connect node_2a, 127.0.0.1, root, , test, $NODE_MYPORT_2; connection node_1; COMMIT; connection node_2; ERROR 23000: Duplicate entry '1' for key 'PRIMARY' DROP TABLE t1;