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https://github.com/MariaDB/server.git
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60 lines
2.0 KiB
Plaintext
60 lines
2.0 KiB
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 (pk int PRIMARY KEY, c varchar(10))
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STATS_PERSISTENT=0 ENGINE=InnoDB;
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INSERT INTO t VALUES (10, "0123456789");
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--connection default
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BEGIN;
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SELECT * FROM t WHERE c = 10 FOR UPDATE;
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--connect(trx2, localhost,root,,)
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BEGIN;
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SET DEBUG_SYNC="lock_wait_start SIGNAL trx2_start_waiting";
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SET DEBUG_SYNC="lock_wait_end SIGNAL trx2_wait_end WAIT_FOR trx2_cont_upd";
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SET DEBUG_SYNC="lock_rec_store_on_page_infimum_end SIGNAL trx2_moved_locks WAIT_FOR trx2_cont";
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#################
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# We need to update clustered record without changing ordering fields and
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# changing the size of non-ordering fields to cause locks moving from deleted
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# record to infimum.
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###
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--send UPDATE t SET c = NULL WHERE pk = 10
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--connect(trx3, localhost,root,,)
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SET DEBUG_SYNC="now WAIT_FOR trx2_start_waiting";
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#################
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# The condition wariable waiting in lock_wait() must be finished by timeout
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###
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SET innodb_lock_wait_timeout=1;
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BEGIN;
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SET DEBUG_SYNC="lock_wait_start SIGNAL trx3_start_waiting WAIT_FOR trx3_cont_waiting";
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SET DEBUG_SYNC="lock_sys_t_cancel_enter SIGNAL trx3_cancel_enter WAIT_FOR trx3_cont_cancel_waiting";
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--send UPDATE t SET c = "abcdefghij" WHERE pk = 10
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--connection default
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SET DEBUG_SYNC="now WAIT_FOR trx3_start_waiting";
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COMMIT;
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SET DEBUG_SYNC="now WAIT_FOR trx2_wait_end";
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SET DEBUG_SYNC="now SIGNAL trx3_cont_waiting";
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SET DEBUG_SYNC="now WAIT_FOR trx3_cancel_enter";
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SET DEBUG_SYNC="now SIGNAL trx2_cont_upd";
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SET DEBUG_SYNC="now WAIT_FOR trx2_moved_locks";
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#################
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# If the bug is not fixed, there will be assertion failure here, because trx2
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# moved trx3 lock from deleted record to infimum when trx3 tried to cancel the
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# lock.
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###
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SET DEBUG_SYNC="now SIGNAL trx3_cont_cancel_waiting";
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SET DEBUG_SYNC="now SIGNAL trx2_cont";
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--disconnect trx2
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--disconnect trx3
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--connection default
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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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