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0fa4dd0747
Use suspend thread syncpoint instead of include/wait_condition.inc to make sure DELETE created waiting lock before the next UPDATE begins locking.
33 lines
746 B
Plaintext
33 lines
746 B
Plaintext
--source include/have_innodb.inc
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--source include/count_sessions.inc
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--source include/have_debug.inc
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--source include/have_debug_sync.inc
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CREATE TABLE t(a INT PRIMARY KEY) ENGINE=InnoDB;
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INSERT INTO t VALUES (3);
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BEGIN;
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UPDATE t SET a = 2;
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connect con1,localhost,root;
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SET DEBUG_SYNC="lock_wait_start SIGNAL del_locked";
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send DELETE FROM t;
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connection default;
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SET DEBUG_SYNC="now WAIT_FOR del_locked";
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UPDATE t SET a = 1;
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COMMIT;
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connection con1;
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error ER_LOCK_DEADLOCK;
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reap;
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disconnect con1;
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connection default;
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--echo # The above DELETE must delete all the rows in the table, so the
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--echo # following SELECT must show 0 rows.
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SELECT count(*) FROM t;
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SET DEBUG_SYNC="reset";
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DROP TABLE t;
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--source include/wait_until_count_sessions.inc
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