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In-Reply-To: <1663e08f-2711-42ed-a3c7-08632c852911@dunslane.net>
From: Amul Sul <sulamul@gmail.com>
Date: Sat, 21 Mar 2026 21:05:50 +0530
Message-ID: 
 <CAAJ_b94dfQBXaPiZFaVzH=8mCVY6NZ6JEiFXHWph3HYJiSj=1Q@mail.gmail.com>
Subject: Re: pg_waldump: support decoding of WAL inside tarfile
To: Andrew Dunstan <andrew@dunslane.net>
Cc: Tom Lane <tgl@sss.pgh.pa.us>, Michael Paquier <michael@paquier.xyz>,
	Zsolt Parragi <zsolt.parragi@percona.com>,
 Robert Haas <robertmhaas@gmail.com>,
	Chao Li <li.evan.chao@gmail.com>,
 Jakub Wartak <jakub.wartak@enterprisedb.com>,
	PostgreSQL Hackers <pgsql-hackers@lists.postgresql.org>
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On Sat, Mar 21, 2026 at 5:51=E2=80=AFPM Andrew Dunstan <andrew@dunslane.net=
> wrote:
>
>
> On 2026-03-21 Sa 2:34 AM, Tom Lane wrote:
>
> Michael Paquier <michael@paquier.xyz> writes:
>
> On Fri, Mar 20, 2026 at 11:49:02PM -0400, Tom Lane wrote:
>
> Buildfarm members batta and hachi don't like this very much.
>
> I did not look at what's happening on the host, but it seems like a
> safe bet to assume that we are not seeing many failures in the
> buildfarm because we don't have many animals that have the idea to add
> --with-zstd to their build configuration, like these two ones.
>
> That may be part of the story, but only part.  I spent a good deal of
> time trying to reproduce batta & hachi's configurations locally, on
> several different platforms, but still couldn't duplicate what they
> are showing.
>
>
>
>
>
> Yeah, I haven't been able to reproduce it either. But while investigating=
 I found a couple of issues. We neglected to add one of the tests to meson.=
build, and we neglected to close some files, causing errors on windows.
>

While the proposed fix of closing the file pointer before returning is
correct, we also need to ensure the file is reopened in the next call
to spill any remaining buffered data. I=E2=80=99ve made a small update to
Andrew's 0001 patch to handle this. Also, changes to meson.build don't
seem to be needed as we haven't committed that file yet (unless I am
missing something).

I=E2=80=99ve also reattached the other patches so they don't get lost: v2-0=
002
is Andrew's patch for the archive streamer, and v2-0003 is the patch I
posted previously [1].


Regards,
Amul

1] http://postgr.es/m/CAAJ_b95L5J7bjRNDjRj6WgqFcQeaBD+JX3sAuxPA4uopqEThxA@m=
ail.gmail.com

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