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If lock type is LOCK_GAP or LOCK_ORDINARY, and the transaction holds implicit lock for the record, then explicit gap-lock will not be set for the record, as lock_rec_convert_impl_to_expl() returns true and lock_rec_convert_impl_to_expl() bypasses lock_rec_lock() call. The fix converts explicit lock to implicit one if requested lock type is not LOCK_REC_NOT_GAP. innodb_information_schema test result is also changed as after the fix the following statements execution: SET autocommit=0; INSERT INTO t1 VALUES (5,10); SELECT * FROM t1 FOR UPDATE; leads to additional gap lock requests.
21 lines
518 B
Text
21 lines
518 B
Text
--source include/have_innodb.inc
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--source include/count_sessions.inc
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CREATE TABLE t(a INT UNSIGNED PRIMARY KEY) ENGINE=InnoDB;
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INSERT INTO t VALUES (10), (30);
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--connect (con1,localhost,root,,)
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SET TRANSACTION ISOLATION LEVEL SERIALIZABLE;
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BEGIN;
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INSERT INTO t VALUES (20);
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SELECT * FROM t WHERE a BETWEEN 10 AND 30;
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--connection default
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SET session innodb_lock_wait_timeout=1;
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--error ER_LOCK_WAIT_TIMEOUT
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INSERT INTO t VALUES (15);
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--disconnect con1
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DROP TABLE t;
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--source include/wait_until_count_sessions.inc
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