Re: Intermittent buildfarm failures on wrasse

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Peter Geoghegan <pg(at)bowt(dot)ie>
Cc: Noah Misch <noah(at)leadboat(dot)com>, Andres Freund <andres(at)anarazel(dot)de>, 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 03:56:15
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I wrote:
> One thing I'm eyeing now is that it looks like Noah is re-initdb'ing
> each time, whereas I'd just stopped and started the postmaster of
> an existing installation. That does not seem like it could matter
> but ...

Well, damn. I changed my script that way and it failed on the tenth
iteration (versus a couple hundred successful iterations the other
way). So somehow this is related to time-since-initdb, not
time-since-postmaster-start. Any ideas?

Anyway, I'm too tired to do more tonight, but now that I can reproduce it
I will stick some debugging logic in tomorrow. I no longer think we
should clutter the git repo with any more short-term hacks.

regards, tom lane

PS a bit later: I've not yet reproduced it a second time, so the
failure rate is unfortunately a lot less than one-in-ten. Still,
this eliminates the idea that there's some secret sauce in Noah's
build details.

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