Re: BUG #19490: Streaming standby on 16.14 stops applying WAL on MultiXactOffsetSLRU when primary is 16.8

From: Heikki Linnakangas <hlinnaka(at)iki(dot)fi>
To: Andrey Borodin <x4mmm(at)yandex-team(dot)ru>
Cc: Nazneen Jafri <jafrinazneen(at)gmail(dot)com>, Michael Paquier <michael(at)paquier(dot)xyz>, Ayush Tiwari <ayushtiwari(dot)slg01(at)gmail(dot)com>, Radim Marek <radim(at)boringsql(dot)com>, Marko Tiikkaja <marko(at)joh(dot)to>, PostgreSQL mailing lists <pgsql-bugs(at)lists(dot)postgresql(dot)org>
Subject: Re: BUG #19490: Streaming standby on 16.14 stops applying WAL on MultiXactOffsetSLRU when primary is 16.8
Date: 2026-05-31 10:14:43
Message-ID: d86dd74a-315f-49d7-87c1-68196ea40fb2@iki.fi
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On 29/05/2026 21:06, Andrey Borodin wrote:
>> On 27 May 2026, at 17:08, Andrey Borodin <x4mmm(at)yandex-team(dot)ru> wrote:
>>
>> I'll try to get this test module to usable state and enable on my animal.
>
> "hippocampus" now checks backward WAL compatibility for every commit into back
> branches.
>
> WAL trace for verification is installcheck with PG_TEST_EXTRA=replay_xversion
> and special multixact workload that was tested to catch bug in this thread.

That's awesome, thank you!

- Heikki

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