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# # Test that the SERIALIZABLE isolation level behaves as expected. # A local serializable transaction is aborted by an incoming remote update # # wsrep_sync_wait does not work well with serializable, see mysql-wsrep#130 # hence the need to use --sleep . # --source include/galera_cluster.inc --source include/have_innodb.inc --connection node_1 CREATE TABLE t1 (id INT PRIMARY KEY, f2 INTEGER) ENGINE=InnoDB; # # Read (local transaction) / Write (remote transaction) conflict # SET AUTOCOMMIT=OFF; SET SESSION TRANSACTION ISOLATION LEVEL SERIALIZABLE; START TRANSACTION; SELECT * FROM t1; --connection node_2 INSERT INTO t1 VALUES (1,1); --sleep 2 --connection node_1 --error ER_LOCK_DEADLOCK SELECT * FROM t1; ROLLBACK; DELETE FROM t1; # # Write (local transaction) / Write (remote transaction) conflict # --connection node_1 INSERT INTO t1 VALUES (1,1); START TRANSACTION; SELECT * FROM t1; --connection node_2 UPDATE t1 SET f2 = 2; --sleep 2 --connection node_1 --error ER_LOCK_DEADLOCK UPDATE t1 SET f2 = 3; ROLLBACK; DELETE FROM t1; # # Write (local transaction) / Write (remote transaction) conflict # Local transaction writes before remote one. # Nothing special happens here - ordinary deadlock on COMMIT # --connection node_1 START TRANSACTION; --connection node_1 INSERT INTO t1 VALUES (1,1); --connection node_2 INSERT INTO t1 VALUES (1,2); --connection node_1 --error ER_LOCK_DEADLOCK COMMIT; DROP TABLE t1;