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ae7e1b9b13
There is a race condition on a test. con1 is the older transaction as it query started wait first. Test continues so that con1 gets lock wait timeout first. There is possibility that default connection gets lock timeout also or as con1 is rolled back it gets the locks it waited and does the update. Fixed by removing query outputs as they could vary and accepting success from default connection query.
25 lines
603 B
Plaintext
25 lines
603 B
Plaintext
SET GLOBAL innodb_deadlock_detect=OFF;
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SET GLOBAL innodb_lock_wait_timeout=2;
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connection default;
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CREATE TABLE t1(
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id INT,
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PRIMARY KEY(id)
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) ENGINE=InnoDB;
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INSERT INTO t1 VALUES(1), (2), (3);
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BEGIN;
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SELECT * FROM t1 WHERE id = 1 FOR UPDATE;
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connect con1,localhost,root,,;
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BEGIN;
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SELECT * FROM t1 WHERE id = 2 FOR UPDATE;
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SELECT * FROM t1 WHERE id = 1 FOR UPDATE;
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connection default;
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SELECT * FROM t1 WHERE id = 2 FOR UPDATE;
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connection con1;
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ROLLBACK;
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connection default;
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ROLLBACK;
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DROP TABLE t1;
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disconnect con1;
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SET GLOBAL innodb_lock_wait_timeout=default;
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SET GLOBAL innodb_deadlock_detect=default;
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