# #Bug#11759688 52020: InnoDB can still deadlock #on just INSERT...ON DUPLICATE KEY #a.k.a. Bug#7975 deadlock without any locking, simple select and update # CREATE TABLE t1 (a INT PRIMARY KEY, b INT NOT NULL) ENGINE=InnoDB; INSERT INTO t1 VALUES(3,1); BEGIN; SET DEBUG_SYNC='write_row_noreplace SIGNAL insert1 WAIT_FOR select1'; INSERT INTO t1 VALUES(3,2); SET DEBUG_SYNC='now WAIT_FOR insert1'; SELECT * FROM t1 LOCK IN SHARE MODE; a b 3 1 SET DEBUG_SYNC='lock_wait_will_wait SIGNAL default_will_wait'; SELECT * FROM t1 FOR UPDATE; SET DEBUG_SYNC='now WAIT_FOR default_will_wait'; SET DEBUG_SYNC='now SIGNAL select1'; ERROR 23000: Duplicate entry '3' for key 'PRIMARY' INSERT INTO t1 VALUES(3,3) ON DUPLICATE KEY UPDATE b=b+10; ERROR 40001: Deadlock found when trying to get lock; try restarting transaction COMMIT; SET DEBUG_SYNC='write_row_replace SIGNAL insert2 WAIT_FOR select2'; REPLACE INTO t1 VALUES(3,4); SET DEBUG_SYNC='now WAIT_FOR insert2'; SET DEBUG_SYNC='lock_wait_will_wait SIGNAL default_will_wait'; SELECT * FROM t1; a b 3 11 SELECT * FROM t1 LOCK IN SHARE MODE; SET DEBUG_SYNC='now WAIT_FOR default_will_wait'; SET DEBUG_SYNC='now SIGNAL select2'; SET DEBUG_SYNC='write_row_replace SIGNAL insert3 WAIT_FOR select3'; INSERT INTO t1 VALUES(3,5) ON DUPLICATE KEY UPDATE b=b+20; a b 3 4 SET DEBUG_SYNC='now WAIT_FOR insert3'; SET DEBUG_SYNC='lock_wait_will_wait SIGNAL default_will_wait'; SELECT b FROM t1 LOCK IN SHARE MODE; SET DEBUG_SYNC='now WAIT_FOR default_will_wait'; SET DEBUG_SYNC='now SIGNAL select3'; b 24 SET DEBUG_SYNC='write_row_noreplace SIGNAL insert4 WAIT_FOR select4'; LOAD DATA INFILE '../../std_data/loaddata5.dat' INTO TABLE t1 FIELDS TERMINATED BY '' ENCLOSED BY '' (a, b); SET DEBUG_SYNC='now WAIT_FOR insert4'; SELECT b FROM t1 WHERE a=3 LOCK IN SHARE MODE; b 24 SET DEBUG_SYNC='lock_wait_will_wait SIGNAL default_will_wait'; SELECT b FROM t1 WHERE a=3 FOR UPDATE; SET DEBUG_SYNC='now WAIT_FOR default_will_wait'; SET DEBUG_SYNC='now SIGNAL select4'; b 24 ERROR 23000: Duplicate entry '3' for key 'PRIMARY' SET DEBUG_SYNC='write_row_noreplace SIGNAL insert5 WAIT_FOR select5'; LOAD DATA INFILE '../../std_data/loaddata5.dat' IGNORE INTO TABLE t1 FIELDS TERMINATED BY '' ENCLOSED BY '' (a, b); SET DEBUG_SYNC='now WAIT_FOR insert5'; SELECT * FROM t1; a b 3 24 SELECT * FROM t1 WHERE a=3 LOCK IN SHARE MODE; a b 3 24 SET DEBUG_SYNC='lock_wait_will_wait SIGNAL default_will_wait'; SELECT * FROM t1 WHERE a=3 FOR UPDATE; SET DEBUG_SYNC='now WAIT_FOR default_will_wait'; SET DEBUG_SYNC='now SIGNAL select5'; Warnings: Warning 1062 Duplicate entry '3' for key 'PRIMARY' a b 3 24 SET DEBUG_SYNC='write_row_replace SIGNAL insert6 WAIT_FOR select6'; LOAD DATA INFILE '../../std_data/loaddata5.dat' REPLACE INTO TABLE t1 FIELDS TERMINATED BY '' ENCLOSED BY '' (a, b); SET DEBUG_SYNC='now WAIT_FOR insert6'; SELECT * FROM t1; a b 1 2 3 24 5 6 SET DEBUG_SYNC='lock_wait_will_wait SIGNAL default_will_wait'; SELECT a,b FROM t1 LOCK IN SHARE MODE; SET DEBUG_SYNC='now WAIT_FOR default_will_wait'; SET DEBUG_SYNC='now SIGNAL select6'; a b 1 2 3 4 5 6 SET DEBUG_SYNC='RESET'; DROP TABLE t1; START TRANSACTION; CREATE TEMPORARY TABLE t1 (a INT, b CHAR(10), d VARCHAR(100), c INT, UNIQUE INDEX(a), UNIQUE INDEX(b), UNIQUE INDEX(d)) ENGINE = InnoDB; INSERT INTO t1 VALUES(2, 'abcde', 'qwerty', 200); REPLACE INTO t1 VALUES(2, 'QWERTY', 'ZXCVBB', 300); SELECT * FROM t1; a b d c 2 QWERTY ZXCVBB 300 COMMIT; DROP TABLE t1; # # Bug#22884631 FAILING ASSERTION: TRX->DUPLICATES == 0 # SELECT @@table_open_cache_instances; @@table_open_cache_instances 1 CREATE TABLE t1(a INT); CREATE TABLE t2(a INT); INSERT INTO t1 VALUES(1); INSERT INTO t2 VALUES(2); # Connection con1 INSERT INTO t1 VALUES(3); SET DEBUG_SYNC = 'RESET'; SET DEBUG_SYNC = 'ib_after_row_insert WAIT_FOR go_ahead'; REPLACE INTO t2 VALUES(3); # Connection con2 INSERT INTO t1 VALUES(70, 80); ERROR 21S01: Column count doesn't match value count at row 1 SET DEBUG_SYNC= 'now SIGNAL go_ahead'; # Connection con1 DROP TABLE t1; DROP TABLE t2; SET DEBUG_SYNC= 'RESET';