mariadb/mysql-test/suite/galera_sr/r/mysql-wsrep-features#22.result
Daniele Sciascia bdcecfa22c MDEV-22021: Galera database could get inconsistent with rollback to savepoint
When binlog is disabled, WSREP will not behave correctly when
SAVEPOINT ROLLBACK is executed and we will not rollback transaction.
2020-03-31 14:18:21 +03:00

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connection node_2;
connection node_1;
connection node_1;
CREATE TABLE t1 (f1 INTEGER, f2 VARCHAR(10)) ENGINE=InnoDB;
SET AUTOCOMMIT=OFF;
SET SESSION wsrep_trx_fragment_size=1;
START TRANSACTION;
INSERT INTO t1 VALUES (1, 'a');
INSERT INTO t1 VALUES (2, 'a');
INSERT INTO t1 VALUES (3, 'a');
INSERT INTO t1 VALUES (4, 'a');
INSERT INTO t1 VALUES (5, 'a');
connection node_2;
SET SESSION TRANSACTION ISOLATION LEVEL READ UNCOMMITTED;
connection node_1;
SAVEPOINT s1;
INSERT INTO t1 VALUES (11, 'b');
INSERT INTO t1 VALUES (12, 'b');
INSERT INTO t1 VALUES (13, 'b');
INSERT INTO t1 VALUES (14, 'b');
INSERT INTO t1 VALUES (15, 'b');
connection node_2;
connection node_1;
ROLLBACK TO SAVEPOINT s1;
INSERT INTO t1 VALUES (21, 'c');
COMMIT;
connection node_1;
SELECT COUNT(*) = 6 FROM t1;
COUNT(*) = 6
1
connection node_2;
SELECT COUNT(*) = 6 FROM t1;
COUNT(*) = 6
1
DROP TABLE t1;