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Fix for MDEV-5629: Failing assertion: state == TRX_STATE_NOT_STARTED on concurrent CREATE OR REPLACE and transactional UPDATE

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mysql-test/suite/innodb/r/row_lock.result:
  Test case for MDEV-5629
mysql-test/suite/innodb/t/row_lock.test:
  Test case for MDEV-5629
sql/filesort.cc:
  Don't call unlock_row() in case of errors
This commit is contained in:
Michael Widenius
2014-02-11 14:02:42 +02:00
parent dd7ac46801
commit 12bbf03cff
3 changed files with 71 additions and 2 deletions
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16
mysql-test/suite/innodb/r/row_lock.result Normal file
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@ -0,0 +1,16 @@
CREATE TABLE t1 (a INT, b INT) ENGINE=InnoDB;
INSERT INTO t1 VALUES (1,1),(2,2);
CREATE TABLE t2 (c INT, d INT) ENGINE=InnoDB;
INSERT INTO t2 VALUES (1,1), (2,2);
CREATE TABLE t3 (e INT) ENGINE=InnoDB;
CREATE TABLE t4 ENGINE=InnoDB AS SELECT * FROM t2;
BEGIN;
UPDATE t1 SET a = 0 WHERE a = ( SELECT e FROM t3 );
SET DEBUG_SYNC='srv_suspend_mysql_thread_enter SIGNAL waiting';
UPDATE t4 SET d = 1 WHERE d in ( SELECT a FROM t1 ) ORDER BY c LIMIT 6;
SET DEBUG_SYNC='now WAIT_FOR waiting';
SET DEBUG_SYNC='RESET';
UPDATE t4 SET d = 9;
ERROR 40001: Deadlock found when trying to get lock; try restarting transaction
commit;
drop table t1,t2,t3,t4;

48
mysql-test/suite/innodb/t/row_lock.test Normal file
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@ -0,0 +1,48 @@
#
# Test of wrong call to unlock_row
# MDEV-5629 Failing assertion: state == TRX_STATE_NOT_STARTED on
# concurrent CREATE OR REPLACE and transactional UPDATE
#
--source include/have_innodb.inc
--source include/have_debug_sync.inc
CREATE TABLE t1 (a INT, b INT) ENGINE=InnoDB;
INSERT INTO t1 VALUES (1,1),(2,2);
CREATE TABLE t2 (c INT, d INT) ENGINE=InnoDB;
INSERT INTO t2 VALUES (1,1), (2,2);
CREATE TABLE t3 (e INT) ENGINE=InnoDB;
CREATE TABLE t4 ENGINE=InnoDB AS SELECT * FROM t2;
--connect (con11,localhost,root,,test)
BEGIN;
UPDATE t1 SET a = 0 WHERE a = ( SELECT e FROM t3 );
--connect (con12,localhost,root,,test)
SET DEBUG_SYNC='srv_suspend_mysql_thread_enter SIGNAL waiting';
--send
UPDATE t4 SET d = 1 WHERE d in ( SELECT a FROM t1 ) ORDER BY c LIMIT 6;
--connection con11
# Wait for con12 to start waiting for con11
SET DEBUG_SYNC='now WAIT_FOR waiting';
SET DEBUG_SYNC='RESET';
UPDATE t4 SET d = 9;
--connection con12
--error ER_LOCK_DEADLOCK
--reap
--connection con11
commit;
--connection default
--disconnect con12
--disconnect con11
drop table t1,t2,t3,t4;

9
sql/filesort.cc
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@ -652,12 +652,17 @@ static ha_rows find_all_keys(SORTPARAM *param, SQL_SELECT *select,
make_sortkey(param, next_sort_key, ref_pos);
next_sort_key+= param->rec_length;
}
else
file->unlock_row();
/* It does not make sense to read more keys in case of a fatal error */
if (thd->is_error())
break;
/*
We need to this after checking the error as the transaction may have
rolled back in case of a deadlock
*/
if (!write_record)
file->unlock_row();
}
if (!quick_select)
{