Re: Intermittent buildfarm failures on wrasse

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Andres Freund <andres(at)anarazel(dot)de>
Cc: Noah Misch <noah(at)leadboat(dot)com>, Peter Geoghegan <pg(at)bowt(dot)ie>, David Rowley <dgrowleyml(at)gmail(dot)com>, PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org>
Subject: Re: Intermittent buildfarm failures on wrasse
Date: 2022-04-15 15:23:40
Message-ID: 1643686.1650036220@sss.pgh.pa.us
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I wrote:
> So there's no longer any doubt that something is holding back OldestXmin.
> I will go put some instrumentation into the code that's computing that.

The something is the logical replication launcher. In the failing runs,
it is advertising xmin = 724 (the post-initdb NextXID) and continues to
do so well past the point where tenk1 gets vacuumed.

Discuss.

regards, tom lane

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