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35 lines
1 KiB
Text
35 lines
1 KiB
Text
connect pause_purge,localhost,root;
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START TRANSACTION WITH CONSISTENT SNAPSHOT;
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connection default;
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CREATE TABLE t (pk int PRIMARY KEY, sk INT UNIQUE) ENGINE=InnoDB;
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INSERT INTO t VALUES (10, 100);
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connect con1,localhost,root;
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BEGIN;
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SELECT * FROM t WHERE sk = 100 FOR UPDATE;
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pk sk
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10 100
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connect con2,localhost,root;
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SET DEBUG_SYNC="lock_wait_start SIGNAL insert_wait_started";
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INSERT INTO t VALUES (5, 100) # trx 1;
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connect con3,localhost,root;
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SET TRANSACTION ISOLATION LEVEL REPEATABLE READ;
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SET DEBUG_SYNC="now WAIT_FOR insert_wait_started";
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SET DEBUG_SYNC="lock_wait_start SIGNAL delete_started_waiting";
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DELETE FROM t WHERE sk = 100 # trx 2;
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connection con1;
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SET DEBUG_SYNC="now WAIT_FOR delete_started_waiting";
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DELETE FROM t WHERE sk=100;
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COMMIT;
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disconnect con1;
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connection con2;
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disconnect con2;
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connection con3;
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ERROR 40001: Deadlock found when trying to get lock; try restarting transaction
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disconnect con3;
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connection default;
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SELECT * FROM t;
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pk sk
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5 100
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disconnect pause_purge;
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SET DEBUG_SYNC="RESET";
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DROP TABLE t;
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