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| author | Sergey Vojtovich <svoj@sun.com> | 2010-03-12 14:43:30 +0400 |
|---|---|---|
| committer | Sergey Vojtovich <svoj@sun.com> | 2010-03-12 14:43:30 +0400 |
| commit | e0aadfd491700fc072ffee1e1612f52fa5fc39b1 (patch) | |
| tree | 08c99f355e15327ea040ee174b8368ac0c48a628 /mysql-test/t/myisam.test | |
| parent | b182c9bd2030c3b3c548157d1bc4c01c306b2c5c (diff) | |
| download | mariadb-git-e0aadfd491700fc072ffee1e1612f52fa5fc39b1.tar.gz | |
BUG#47444 - --myisam_repair_threads>1can result in all
index cardinalities=1
Parallel repair didn't poroperly update index cardinality
in certain cases.
When myisam_sort_buffer_size is not enough to store all
keys, index cardinality was updated before index was
actually written, when no index statistic is available.
mysql-test/r/myisam.result:
A test case for BUG#47444.
mysql-test/t/myisam.test:
A test case for BUG#47444.
storage/myisam/sort.c:
update_key_parts() must be called after all index
entries are written, when index statistic is available.
Diffstat (limited to 'mysql-test/t/myisam.test')
| -rw-r--r-- | mysql-test/t/myisam.test | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/mysql-test/t/myisam.test b/mysql-test/t/myisam.test index 7dcfe058039..4abd7dd2b1b 100644 --- a/mysql-test/t/myisam.test +++ b/mysql-test/t/myisam.test @@ -1631,4 +1631,18 @@ INSERT INTO t1 VALUES('1'); SELECT * FROM t1, t1 AS a1 WHERE t1.a=1 AND a1.a=1; DROP TABLE t1; +--echo # +--echo # BUG#47444 - --myisam_repair_threads>1can result in all index +--echo # cardinalities=1 +--echo # +SET myisam_repair_threads=2; +SET myisam_sort_buffer_size=4096; +CREATE TABLE t1(a CHAR(255), KEY(a), KEY(a), KEY(a)); +INSERT INTO t1 VALUES (0),(1),(2),(3),(4),(5),(6),(7),(8),(9),(0),(1),(2),(3); +REPAIR TABLE t1; +SELECT CARDINALITY FROM INFORMATION_SCHEMA.STATISTICS WHERE TABLE_SCHEMA='test' AND TABLE_NAME='t1'; +DROP TABLE t1; +SET myisam_sort_buffer_size=@@global.myisam_sort_buffer_size; +SET myisam_repair_threads=@@global.myisam_repair_threads; + --echo End of 5.1 tests |