Re: Timeout failure in 019_replslot_limit.pl

From: Michael Paquier <michael(at)paquier(dot)xyz>
To: Amit Kapila <amit(dot)kapila16(at)gmail(dot)com>
Cc: Alvaro Herrera <alvherre(at)alvh(dot)no-ip(dot)org>, Noah Misch <noah(at)leadboat(dot)com>, Kyotaro Horiguchi <horikyota(dot)ntt(at)gmail(dot)com>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org>
Subject: Re: Timeout failure in 019_replslot_limit.pl
Date: 2021-09-27 06:43:52
Message-ID: YVFoKJoIRN43qNAU@paquier.xyz
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On Mon, Sep 27, 2021 at 11:53:07AM +0530, Amit Kapila wrote:
> So, it seems on your machine it has passed the following condition in
> secure_write:
> if (n < 0 && !port->noblock && (errno == EWOULDBLOCK || errno == EAGAIN))

Yep.

> If so, this indicates write failure which seems odd to me and probably
> something machine-specific or maybe some different settings in your
> build or machine. BTW, if SSL or GSS is enabled that might have caused
> it in some way. I think the best way is to debug the secure_write
> during this occurrence.

Yeah, but we don't use any of them in the context of this test, so
this is something on a simple send(), no? Hmm. That would not be the
first issue we see with macos these days with interrupted syscalls...
And actually in this stack I can see that errno gets set to EINTR.
--
Michael

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