Re: Fix bug in multixact Oldest*MXactId initialization and access

From: Yura Sokolov <y(dot)sokolov(at)postgrespro(dot)ru>
To: Sami Imseih <samimseih(at)gmail(dot)com>, Heikki Linnakangas <hlinnaka(at)iki(dot)fi>
Cc: Chao Li <li(dot)evan(dot)chao(at)gmail(dot)com>, "pgsql-hackers(at)lists(dot)postgresql(dot)org" <pgsql-hackers(at)lists(dot)postgresql(dot)org>
Subject: Re: Fix bug in multixact Oldest*MXactId initialization and access
Date: 2026-03-03 12:02:06
Message-ID: 120550bf-ca50-4a07-91b1-a88f1434ee8b@postgrespro.ru
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02.03.2026 22:09, Sami Imseih пишет:
>>> It says “Each is indexed by ProcNumber”, but it’s no longer accurate for OldestMemberMXactId prepared-xact entries, which now use index (procno - FIRST_PREPARED_XACT_PROC_NUMBER).
>>
>> Fixed those and some other comment work, and pushed. Thanks!
>>
>
> Thanks! what are your thoughts about adding a test like the one
> here [1] ? This allows us to test correct handling of prepared
> transaction dummy procs. The asserts added will not cover
> this case.
>
> What do you think?
>
> [1] [https://www.postgresql.org/message-id/CAA5RZ0twq5bNMq0r0QNoopQnAEv%2BJ3qJNCrLs7HVqTEntBhJ%3Dg%40mail.gmail.com]
I support: test for bug fixed is a good thing.

--
regards
Yura Sokolov aka funny-falcon

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