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Bug#55458: Partitioned MyISAM table gets crashed by multi-table update

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Problem was that the handler call ::extra(HA_EXTRA_CACHE) was cached
but the ::extra(HA_EXTRA_PREPARE_FOR_UPDATE) was not.

Solution was to also cache the other call and forward it when moving
to a new partition to scan.

mysql-test/r/partition.result:
  test result
mysql-test/t/partition.test:
  New test from bug report.
sql/ha_partition.cc:
  cache the HA_EXTRA_PREPARE_FOR_UPDATE just like HA_EXTRA_CACHE.
sql/ha_partition.h:
  Added cache flag for HA_EXTRA_PREPARE_FOR_UPDATE
This commit is contained in:
Mattias Jonsson
2010-08-10 10:43:12 +02:00
parent d62bfebc7e
commit b409fad8cc
4 changed files with 78 additions and 3 deletions
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25
mysql-test/r/partition.result
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@ -1,4 +1,29 @@
drop table if exists t1, t2;
#
# Bug#55458: Partitioned MyISAM table gets crashed by multi-table update
#
CREATE TABLE t1 (
`id` int NOT NULL,
`user_num` int DEFAULT NULL,
PRIMARY KEY (`id`)
) ENGINE=MyISAM CHARSET=latin1;
INSERT INTO t1 VALUES (1,8601);
INSERT INTO t1 VALUES (2,8601);
INSERT INTO t1 VALUES (3,8601);
INSERT INTO t1 VALUES (4,8601);
CREATE TABLE t2 (
`id` int(11) NOT NULL,
`user_num` int DEFAULT NULL,
`name` varchar(64) NOT NULL,
PRIMARY KEY (`id`)
) ENGINE=MyISAM CHARSET=latin1
PARTITION BY HASH (id)
PARTITIONS 2;
INSERT INTO t2 VALUES (1,8601,'John');
INSERT INTO t2 VALUES (2,8601,'JS');
INSERT INTO t2 VALUES (3,8601,'John S');
UPDATE t1, t2 SET t2.name = 'John Smith' WHERE t1.user_num = t2.user_num;
DROP TABLE t1, t2;
CREATE TABLE t1 (a INT, b INT)
PARTITION BY LIST (a)
SUBPARTITION BY HASH (b)