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# # Bug #28799261 IODKU UNNECESSARILY GAP-LOCKS SECONDARY INDEXES # AFTER DUPLICATE IS ALREADY FOUND # CREATE TABLE t1 (a INT UNIQUE KEY, b INT UNIQUE KEY, c INT) ENGINE = InnoDB; SHOW CREATE TABLE t1; Table Create Table t1 CREATE TABLE `t1` ( `a` int(11) DEFAULT NULL, `b` int(11) DEFAULT NULL, `c` int(11) DEFAULT NULL, UNIQUE KEY `a` (`a`), UNIQUE KEY `b` (`b`) ) ENGINE=InnoDB DEFAULT CHARSET=latin1 # Scenario 1: Serialized transactions (trx1, trx2) INSERT INTO t1 VALUES (1, 1, 1); SELECT * FROM t1; a b c 1 1 1 # Transaction trx1 START TRANSACTION; INSERT INTO t1 VALUES (2, 2, 3) ON DUPLICATE KEY UPDATE c=VALUES(c); COMMIT; # Transaction trx2 START TRANSACTION; INSERT INTO t1 VALUES (2, 1, 2) ON DUPLICATE KEY UPDATE c=VALUES(c); INSERT INTO t1 VALUES (2, 3, 4) ON DUPLICATE KEY UPDATE c=VALUES(c); COMMIT; # Result: SELECT * FROM t1; a b c 1 1 1 2 2 4 # Cleanup DROP TABLE t1; CREATE TABLE t1 (a INT UNIQUE KEY, b INT UNIQUE KEY, c INT) ENGINE = InnoDB; SHOW CREATE TABLE t1; Table Create Table t1 CREATE TABLE `t1` ( `a` int(11) DEFAULT NULL, `b` int(11) DEFAULT NULL, `c` int(11) DEFAULT NULL, UNIQUE KEY `a` (`a`), UNIQUE KEY `b` (`b`) ) ENGINE=InnoDB DEFAULT CHARSET=latin1 # Scenario 2: Serialized transactions (trx2, trx1) INSERT INTO t1 VALUES (1, 1, 1); SELECT * FROM t1; a b c 1 1 1 # Transaction trx2 START TRANSACTION; INSERT INTO t1 VALUES (2, 1, 2) ON DUPLICATE KEY UPDATE c=VALUES(c); INSERT INTO t1 VALUES (2, 3, 4) ON DUPLICATE KEY UPDATE c=VALUES(c); COMMIT; # Transaction trx1 START TRANSACTION; INSERT INTO t1 VALUES (2, 2, 3) ON DUPLICATE KEY UPDATE c=VALUES(c); COMMIT; # Result: SELECT * FROM t1; a b c 1 1 2 2 3 3 # Cleanup DROP TABLE t1; # # Bug #11758237 INSERT ON DUPLICATE KEY UPDATE SOMETIMES # WRITES BINLOG POSITION INCORRECT # CREATE TABLE t1 (a INT UNIQUE KEY, b INT UNIQUE KEY, c INT) ENGINE = InnoDB; SHOW CREATE TABLE t1; Table Create Table t1 CREATE TABLE `t1` ( `a` int(11) DEFAULT NULL, `b` int(11) DEFAULT NULL, `c` int(11) DEFAULT NULL, UNIQUE KEY `a` (`a`), UNIQUE KEY `b` (`b`) ) ENGINE=InnoDB DEFAULT CHARSET=latin1 # Scenario 3: Interleaved transactions (trx1 conflicts on index b) INSERT INTO t1 VALUES (1, 1, 1); SELECT * FROM t1; a b c 1 1 1 # Connection default: # Transaction trx1: START TRANSACTION; INSERT INTO t1 VALUES (2, 1, 2) ON DUPLICATE KEY UPDATE c=VALUES(c); SELECT * FROM t1; a b c 1 1 2 # Connection other: INSERT INTO t1 VALUES (2, 2, 3) ON DUPLICATE KEY UPDATE c=VALUES(c); # Connection default: INSERT INTO t1 VALUES (2, 3, 4) ON DUPLICATE KEY UPDATE c=VALUES(c); SELECT * FROM t1; a b c 1 1 2 2 3 4 COMMIT; # Connection other: # Connection default: # Result: SELECT * FROM t1; a b c 1 1 2 2 3 3 # Cleanup DROP TABLE t1; CREATE TABLE t1 (a INT UNIQUE KEY, b INT UNIQUE KEY, c INT) ENGINE = InnoDB; SHOW CREATE TABLE t1; Table Create Table t1 CREATE TABLE `t1` ( `a` int(11) DEFAULT NULL, `b` int(11) DEFAULT NULL, `c` int(11) DEFAULT NULL, UNIQUE KEY `a` (`a`), UNIQUE KEY `b` (`b`) ) ENGINE=InnoDB DEFAULT CHARSET=latin1 # Scenario 4: Serialized transactions (trx1, trx2) INSERT INTO t1 VALUES (1, 1, 1); SELECT * FROM t1; a b c 1 1 1 # Transaction trx1 START TRANSACTION; INSERT INTO t1 VALUES (2, 2, 3) ON DUPLICATE KEY UPDATE c=VALUES(c); COMMIT; # Transaction trx2 START TRANSACTION; INSERT INTO t1 VALUES (1, 2, 2) ON DUPLICATE KEY UPDATE c=VALUES(c); INSERT INTO t1 VALUES (3, 2, 4) ON DUPLICATE KEY UPDATE c=VALUES(c); COMMIT; # Result: SELECT * FROM t1; a b c 1 1 2 2 2 4 # Cleanup DROP TABLE t1; CREATE TABLE t1 (a INT UNIQUE KEY, b INT UNIQUE KEY, c INT) ENGINE = InnoDB; SHOW CREATE TABLE t1; Table Create Table t1 CREATE TABLE `t1` ( `a` int(11) DEFAULT NULL, `b` int(11) DEFAULT NULL, `c` int(11) DEFAULT NULL, UNIQUE KEY `a` (`a`), UNIQUE KEY `b` (`b`) ) ENGINE=InnoDB DEFAULT CHARSET=latin1 # Scenario 5: Serialized transactions (trx2, trx1) INSERT INTO t1 VALUES (1, 1, 1); SELECT * FROM t1; a b c 1 1 1 # Transaction trx2 START TRANSACTION; INSERT INTO t1 VALUES (1, 2, 2) ON DUPLICATE KEY UPDATE c=VALUES(c); INSERT INTO t1 VALUES (3, 2, 4) ON DUPLICATE KEY UPDATE c=VALUES(c); COMMIT; # Transaction trx1 START TRANSACTION; INSERT INTO t1 VALUES (2, 2, 3) ON DUPLICATE KEY UPDATE c=VALUES(c); COMMIT; # Result: SELECT * FROM t1; a b c 1 1 2 3 2 3 # Cleanup DROP TABLE t1; CREATE TABLE t1 (a INT UNIQUE KEY, b INT UNIQUE KEY, c INT) ENGINE = InnoDB; SHOW CREATE TABLE t1; Table Create Table t1 CREATE TABLE `t1` ( `a` int(11) DEFAULT NULL, `b` int(11) DEFAULT NULL, `c` int(11) DEFAULT NULL, UNIQUE KEY `a` (`a`), UNIQUE KEY `b` (`b`) ) ENGINE=InnoDB DEFAULT CHARSET=latin1 # Scenario 6: Interleaved transactions (trx1 conflicts on index a) INSERT INTO t1 VALUES (1, 1, 1); SELECT * FROM t1; a b c 1 1 1 # Connection default: # Transaction trx1: START TRANSACTION; INSERT INTO t1 VALUES (1, 2, 2) ON DUPLICATE KEY UPDATE c=VALUES(c); SELECT * FROM t1; a b c 1 1 2 # Connection other: START TRANSACTION; SET innodb_lock_wait_timeout = 1; INSERT INTO t1 VALUES (2, 2, 3) ON DUPLICATE KEY UPDATE c=VALUES(c); ERROR HY000: Lock wait timeout exceeded; try restarting transaction COMMIT; # Connection default: INSERT INTO t1 VALUES (3, 2, 4) ON DUPLICATE KEY UPDATE c=VALUES(c); COMMIT; # Result: SELECT * FROM t1; a b c 1 1 2 3 2 4 # Cleanup DROP TABLE t1; 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); SELECT * FROM t1; f1 f2 f3 1 10 100 # Connection other: START TRANSACTION; INSERT INTO t1 VALUES(2, 10, 200) ON DUPLICATE KEY UPDATE f3 = 120; # Connection default START TRANSACTION; SET innodb_lock_wait_timeout = 1; INSERT INTO t1 VALUES(2, 20, 300) ON DUPLICATE KEY UPDATE f3 = 500; ERROR HY000: Lock wait timeout exceeded; try restarting transaction COMMIT; # Connection other: COMMIT; # Connection default # Verify Results: SELECT * FROM t1; f1 f2 f3 1 10 120 DROP TABLE t1; CREATE TABLE t1(f1 INT AUTO_INCREMENT PRIMARY KEY, f2 INT, f3 INT, UNIQUE KEY(f2),UNIQUE KEY(f3))ENGINE=INNODB; INSERT INTO t1(f2,f3) VALUES(10, 100); INSERT INTO t1(f2,f3) VALUES(20, 200); UPDATE t1 SET f2=30,f3=100 WHERE f2 = 20; ERROR 23000: Duplicate entry '100' for key 'f3' SELECT * FROM t1; f1 f2 f3 1 10 100 2 20 200 COMMIT; DROP TABLE t1;