[MDEV-22655] CHECK TABLE ... FOR UPGRADE fails to report old datetime format Created: 2020-05-21  Updated: 2020-11-17

Status: Open
Project: MariaDB Server
Component/s: Temporal Types, Upgrades
Affects Version/s: 10.1.44, 10.4.12
Fix Version/s: 10.4, 10.5

Type: Bug Priority: Major
Reporter: Valerii Kravchuk Assignee: Oleksandr Byelkin
Resolution: Unresolved Votes: 0
Labels: upstream, upstream-fixed


 Description   

Basically, MariaDB is still affected by this upstream fixed bug:

https://bugs.mysql.com/bug.php?id=73008

Moreover, looks like the only way to find out that old format is used is to check information_schema.innodb_sys_columns.

See also MDEV-15228

In addition to the potential impact explained in upstream bug report, looks like in case of partitioned table with index on such column we may hit problems (to be reported elsewhere when reproduced) with it after direct upgrade (without dump and restore) to MariaDB 10.4..x.


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