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MDEV-34078 Memory leak in InnoDB purge with 32-column PRIMARY KEY

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row_purge_reset_trx_id(): Reserve large enough offsets for accomodating
the maximum width PRIMARY KEY followed by DB_TRX_ID,DB_ROLL_PTR.

Reviewed by: Thirunarayanan Balathandayuthapani
This commit is contained in:
Marko Mäkelä
2024-10-01 18:35:39 +03:00
parent 8d810e9426
commit 464055fe65
3 changed files with 52 additions and 2 deletions
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23
mysql-test/suite/innodb/r/purge.result
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@ -116,6 +116,29 @@ t12963823 CREATE TABLE `t12963823` (
KEY `ndx_o` (`o`(500)),
KEY `ndx_p` (`p`(500))
) ENGINE=InnoDB DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci ROW_FORMAT=DYNAMIC
BEGIN NOT ATOMIC
DECLARE c TEXT DEFAULT(SELECT CONCAT('CREATE TABLE t1(c',
GROUP_CONCAT(seq SEPARATOR
' INT DEFAULT 0, c'),
' INT DEFAULT 0, PRIMARY KEY(c',
GROUP_CONCAT(seq SEPARATOR ', c'),
')) ENGINE=InnoDB;') FROM seq_1_to_33);
EXECUTE IMMEDIATE c;
END;
$$
ERROR 42000: Too many key parts specified; max 32 parts allowed
BEGIN NOT ATOMIC
DECLARE c TEXT DEFAULT(SELECT CONCAT('CREATE TABLE t1(c',
GROUP_CONCAT(seq SEPARATOR
' INT DEFAULT 0, c'),
' INT DEFAULT 0, PRIMARY KEY(c',
GROUP_CONCAT(seq SEPARATOR ', c'),
')) ENGINE=InnoDB;') FROM seq_1_to_32);
EXECUTE IMMEDIATE c;
END;
$$
INSERT INTO t1() VALUES();
InnoDB 0 transactions not purged
DROP TABLE t1;
DROP TABLE t1_purge, t2_purge, t3_purge, t4_purge, t12637786, t12963823;
SET GLOBAL innodb_purge_rseg_truncate_frequency=@save_frequency;