Re: Autovacuum giving up on tables after crash because of lack of stats

From: Michael Paquier <michael(at)paquier(dot)xyz>
To: Bertrand Drouvot <bertranddrouvot(dot)pg(at)gmail(dot)com>
Cc: Postgres hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org>
Subject: Re: Autovacuum giving up on tables after crash because of lack of stats
Date: 2024-12-30 10:12:54
Message-ID: Z3JyJvDezNsPHwkF@paquier.xyz
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On Mon, Dec 30, 2024 at 09:44:45AM +0000, Bertrand Drouvot wrote:
> I think that replicating stats that are used by autovacuum would be an additional
> benefit, so +1 for the idea number 2). This is an "issue" that has been raised
> multiple times (like in [1]).
>
> [1]: https://www.postgresql.org/message-id/20240607033806.6gwgolihss72cj6r%40awork3.anarazel.de

Yeah, I recall reading this one. A colleague has poked me about doing
something here a few weeks ago, as well, and only flushing the stats
at redo was not enough while being full of holes.

Attached is a rebase, following b757abefc041, for the moment.

And Happy New Year to all! In advance.
--
Michael

Attachment Content-Type Size
v2-0001-Move-information-about-pgstats-kinds-into-its-own.patch text/x-diff 5.7 KB
v2-0002-Add-RMGR-and-WAL-logging-API-for-pgstats.patch text/x-diff 11.2 KB
v2-0003-injection_points-Add-option-and-tests-for-WAL-log.patch text/x-diff 7.4 KB

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