This is related to the following upstream bug:
https://bugs.mysql.com/bug.php?id=73648
When binlog_format=ROW is set and a partitioned table is updated, the update seems to perform much slower than an equivalent update of a non-partitioned table.
Some MTR tests have been contributed to demonstrate this problem. They are in the attached zip archive. The results were reported as the following:
mariadb-10.1.31
bug.test 'innodb_plugin,row' [ pass ] 114205
bug.test_no_partition 'innodb_plugin,row' [ pass ] 22101
bug.test 'row,xtradb' [ pass ] 429822
bug.test_no_partition 'row,xtradb' [ pass ] 65829
mariadb 10.2.12
bug.test 'innodb,row' [ pass ] 161739
bug.test_no_partition 'innodb,row' [ pass ] 28501
mysql-5.6.39
bug.test [ pass ] 158594
bug.test_no_partition [ pass ] 20350
mysql 5.7.21
bug.test [ pass ] 37490
bug.test_no_partition [ pass ] 26441
MySQL 5.7 most likely performs better because of the introduction of native partitioning. Native partitioning was removed from MariaDB 10.2 during the 5.7 InnoDB merge. See MDEV-15223.
- relates to
-
MDEV-15223
Document that InnoDB's native partitioning was not merged into MariaDB
-
-
Closed
- links to
-
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Bug
Critical