33 lines
1.1 KiB
Plaintext
33 lines
1.1 KiB
Plaintext
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#
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# Bug #39022: Mysql randomly crashing in lock_sec_rec_cons_read_sees
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#
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CREATE TABLE t1(a TINYINT NOT NULL,b TINYINT,PRIMARY KEY(b)) ENGINE=innodb;
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CREATE TABLE t2(d TINYINT NOT NULL,UNIQUE KEY(d)) ENGINE=innodb;
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INSERT INTO t1 VALUES (13,0),(8,1),(9,2),(6,3),
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(11,5),(11,6),(7,7),(7,8),(4,9),(6,10),(3,11),(11,12),
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(12,13),(7,14);
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INSERT INTO t2 VALUES (0),(1),(2),(3),(4),(5),(6),(7),(8),(9),(10),
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(11),(12),(13),(14);
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# in thread1
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START TRANSACTION;
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# in thread2
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REPLACE INTO t2 VALUES (-17);
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SELECT d FROM t2,t1 WHERE d=(SELECT MAX(a) FROM t1 WHERE t1.a > t2.d) LOCK IN SHARE MODE;
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d
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# in thread1
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REPLACE INTO t1(a,b) VALUES (67,20);
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# in thread2
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COMMIT;
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START TRANSACTION;
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REPLACE INTO t1(a,b) VALUES (65,-50);
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REPLACE INTO t2 VALUES (-91);
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SELECT d FROM t2,t1 WHERE d=(SELECT MAX(a) FROM t1 WHERE t1.a > t2.d) LOCK IN SHARE MODE;
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# in thread1
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# should not crash
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SELECT d FROM t2,t1 WHERE d=(SELECT MAX(a) FROM t1 WHERE t1.a > t2.d) LOCK IN SHARE MODE;
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ERROR 40001: Deadlock found when trying to get lock; try restarting transaction
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# in thread2
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d
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# in thread1;
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DROP TABLE t1,t2;
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