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Re: 634e130: MDEV-10424 - Assertion `ticket == __null' failed in MDL_request::set_type


Hi, Sergey!

On Aug 04, Sergey Vojtovich wrote:
> revision-id: 634e130b00bc900d1b7b8a8df6c13b1701f84b30 (mariadb-5.5.50-24-g634e130)
> parent(s): 2f55f0b010619a09870ba704b55dd1426a158f1d
> committer: Sergey Vojtovich
> timestamp: 2016-08-04 15:51:17 +0400
> message:
> MDEV-10424 - Assertion `ticket == __null' failed in MDL_request::set_type
> Reexecution of prepared "ANALYZE TABLE merge_table, table" may miss to
> reinitialize "table" for subsequent execution and trigger assertion failure.
> This happens because MERGE engine may adjust table->next_global chain, which
> gets cleared by close_thread_tables()/ha_myisammrg::detach_children() later.
> Since reinitilization iterates next_global chain, it won't see tables following
> merge table.
> Fixed by appending saved next_global chain after merge children.

looks ok to me, but let elena do some extra testing of this, please

Chief Architect MariaDB
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