Re: pg_upgrade test writes to source directory

From: Peter Eisentraut <peter(dot)eisentraut(at)enterprisedb(dot)com>
To: Michael Paquier <michael(at)paquier(dot)xyz>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: Andres Freund <andres(at)anarazel(dot)de>, Justin Pryzby <pryzby(at)telsasoft(dot)com>, pgsql-hackers(at)postgresql(dot)org
Subject: Re: pg_upgrade test writes to source directory
Date: 2022-06-01 14:11:16
Message-ID: e65a862a-24aa-7482-6d98-49fbb048f22f@enterprisedb.com
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On 31.05.22 09:17, Michael Paquier wrote:
> On Sat, May 28, 2022 at 04:14:01PM -0400, Tom Lane wrote:
>> Yeah, I'd noticed the obsoleted comments too, but not bothered to complain
>> since that was just WIP and not an officially proposed patch. I'll be
>> happy to review if you want to put up a full patch.
> Well, here is a formal patch set, then. Please feel free to comment.
>
> FWIW, I am on the fence with dropping TESTDIR, as it could be used by
> out-of-core test code as well. If there are doubts about
> back-patching the first part, doing that only on HEAD would be fine to
> fix the problem of this thread.

I don't understand the point of this first patch at all. Why define
TESTOUTDIR as a separate variable if it's always TESTDIR + tmp_check?
Why define TESTOUTDIR in pg_regress invocations, if nothing uses it? If
you want it as a separate variable, it could be defined in some Per
utility module, but I don't see why it needs to be in Makefile.global.
What is the problem that this is trying to solve?

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