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# # Bug#25966845 INSERT ON DUPLICATE KEY GENERATE A DEADLOCK # CREATE TABLE t1(f1 int primary key, f2 int, f3 int, unique key(f2))engine=innodb; SHOW CREATE TABLE t1; Table Create Table t1 CREATE TABLE `t1` ( `f1` int(11) NOT NULL, `f2` int(11) DEFAULT NULL, `f3` int(11) DEFAULT NULL, PRIMARY KEY (`f1`), UNIQUE KEY `f2` (`f2`) ) ENGINE=InnoDB DEFAULT CHARSET=latin1 INSERT INTO t1(f1, f2, f3) VALUES(1, 10, 100); # Connection default BEGIN; INSERT INTO t1 VALUES(2, 20, 300) ON DUPLICATE KEY UPDATE f3 = 500; # Connection other: BEGIN; SET DEBUG_SYNC = 'ib_after_row_insert_step SIGNAL default_commit'; INSERT INTO t1 VALUES(2, 10, 200) ON DUPLICATE KEY UPDATE f3 = 120; # Connection default SET DEBUG_SYNC = 'now WAIT_FOR default_commit'; COMMIT; # Connection other COMMIT; # Verify Results: SELECT * FROM t1; f1 f2 f3 1 10 100 2 20 120 SET DEBUG_SYNC ='RESET'; DROP TABLE t1; # # Bug #29195848 ASSERTION "!OTHER_LOCK" IN LOCK_REC_ADD_TO_QUEUE # SET GLOBAL innodb_purge_stop_now = ON; CREATE TABLE t1 (id INT NOT NULL PRIMARY KEY, b INT, UNIQUE KEY(b)); INSERT INTO t1 VALUES(2, 300); DELETE FROM t1; INSERT INTO t1 VALUES(3, 300); SELECT * FROM t1; id b 3 300 SET DEBUG_SYNC='ib_after_row_insert_step SIGNAL after_insert WAIT_FOR rollback'; INSERT INTO t1 VALUES(2, 300);; SET DEBUG_SYNC='now WAIT_FOR after_insert'; START TRANSACTION; INSERT INTO t1 VALUES(1, 300); ERROR 23000: Duplicate entry '300' for key 'b' SET GLOBAL innodb_purge_run_now=ON; SET DEBUG_SYNC='now SIGNAL rollback'; ERROR 23000: Duplicate entry '300' for key 'b' COMMIT; DROP TABLE t1; SET GLOBAL innodb_purge_stop_now = ON; CREATE TABLE t1 (a INT PRIMARY KEY, b INT, UNIQUE KEY(b)); INSERT INTO t1 VALUES(1,10); DELETE FROM t1; INSERT INTO t1 VALUES(2,10); SET DEBUG_SYNC='ib_undo_mod_before_remove_clust SIGNAL during_rollback WAIT_FOR rollback'; INSERT INTO t1 VALUES(1, 10) ;; SET DEBUG_SYNC='now WAIT_FOR during_rollback'; SELECT * FROM t1 WHERE a = 1 LOCK IN SHARE MODE; ERROR HY000: Lock wait timeout exceeded; try restarting transaction SET GLOBAL innodb_purge_run_now=ON; SET DEBUG_SYNC='now SIGNAL rollback'; ERROR 23000: Duplicate entry '10' for key 'b' SELECT * FROM t1; a b 2 10 DROP TABLE t1; # # Bug #29718243 MYQL SERVER CRASHING # CREATE TEMPORARY TABLE tmpTest(tmpField INT , UNIQUE KEY uq_tmpField (tmpField)); CREATE TEMPORARY TABLE tmpTest1(tmpField INT , UNIQUE KEY uq_tmpField (tmpField)); CREATE FUNCTION ZZtest() RETURNS int(11) BEGIN DECLARE l_total INTEGER; SET l_total = 0; INSERT INTO tmpTest SET tmpField = 40; INSERT IGNORE INTO tmpTest SET tmpField = 40; INSERT IGNORE INTO tmpTest1 SET tmpField = 40; DROP TEMPORARY TABLE IF EXISTS tmpTest; DROP TEMPORARY TABLE IF EXISTS tmpTest1; RETURN l_total; END| SELECT ZZtest() AS test; test 0 DROP FUNCTION ZZtest;