connection node_2; connection node_1; SET SESSION wsrep_trx_fragment_size = 1; connection node_1; CREATE TABLE ten (f1 INTEGER NOT NULL PRIMARY KEY) Engine=InnoDB; INSERT INTO ten VALUES (1),(2),(3),(4),(5),(6),(7),(8),(9),(10); CREATE TABLE t1 (f1 INTEGER AUTO_INCREMENT PRIMARY KEY, f2 INTEGER) Engine=InnoDB; SET SESSION wsrep_trx_fragment_size = 1; connection node_2; set session wsrep_sync_wait=15; SELECT COUNT(*) from ten; COUNT(*) 10 SELECT COUNT(*) from t1; COUNT(*) 0 set session wsrep_sync_wait=0; SET GLOBAL wsrep_slave_threads = 4; SET SESSION wsrep_trx_fragment_size = 1; connection node_1; INSERT INTO t1 (f2) SELECT 1 FROM ten AS a1, ten AS a2;; connection node_1a; INSERT INTO t1 (f2) SELECT 1 FROM ten AS a1, ten AS a2;; connection node_2; INSERT INTO t1 (f2) SELECT 1 FROM ten AS a1, ten AS a2;; connection node_1; connection node_1a; connection node_2; set session wsrep_sync_wait=15; SELECT COUNT(*) FROM t1; COUNT(*) 300 SELECT COUNT(DISTINCT f1) FROM t1; COUNT(DISTINCT f1) 300 connection default; DROP TABLE t1; DROP TABLE ten;