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From: Alexander Lakhin <[email protected]>
To: Thomas Munro <[email protected]>
Cc: Tom Lane <[email protected]>
Cc: Andrew Dunstan <[email protected]>
Cc: pgsql-hackers <[email protected]>
Subject: Re: Why is src/test/modules/committs/t/002_standby.pl flaky?
Date: Thu, 13 Jan 2022 10:00:00 +0300
Message-ID: <[email protected]> (raw)
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13.01.2022 09:36, Thomas Munro wrote:
> On Wed, Jan 12, 2022 at 8:00 PM Alexander Lakhin <[email protected]> wrote:
>> By the look of things, you are right and this is the localhost-only issue.
> But can't that be explained with timing races?  You change some stuff
> around and it becomes less likely that you get a FIN to arrive in a
> super narrow window, which I'm guessing looks something like: recv ->
> EWOULDBLOCK, [receive FIN], wait -> FD_CLOSE, wait [hangs].  Note that
> it's not happening on several Windows BF animals, and the ones it is
> happening on only do it only every few weeks.
But I still see the issue when I run both test parts on a single
machine: first instance is `vcregress taptest src\test\restart` and the
second `set NO_TEMP_INSTALL=1 & vcregress taptest contrib/postgres_fdw`
(see attachment).

I'll try new tests and continue investigation later today/tomorrow. Thanks!

Best regards,
Alexander


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  [image/png] Screenshot_20220113_095249.png (63.2K, ../[email protected]/2-Screenshot_20220113_095249.png)
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