From: Tom Lane <tgl@sss.pgh.pa.us>
To: Andres Freund <andres@anarazel.de>
cc: Noah Misch <noah@leadboat.com>, Peter Geoghegan <pg@bowt.ie>,
        David Rowley <dgrowleyml@gmail.com>,
        PostgreSQL Hackers <pgsql-hackers@lists.postgresql.org>
Subject: Re: Intermittent buildfarm failures on wrasse
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Comments: In-reply-to Tom Lane <tgl@sss.pgh.pa.us>
	message dated "Fri, 15 Apr 2022 10:15:32 -0400"
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Date: Fri, 15 Apr 2022 11:23:40 -0400
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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