Re: [PATCH] remove pg_standby

From: Thomas Munro <thomas(dot)munro(at)gmail(dot)com>
To: Michael Paquier <michael(at)paquier(dot)xyz>
Cc: Peter Eisentraut <peter(dot)eisentraut(at)enterprisedb(dot)com>, Justin Pryzby <pryzby(at)telsasoft(dot)com>, Heikki Linnakangas <hlinnaka(at)iki(dot)fi>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Stephen Frost <sfrost(at)snowman(dot)net>, Ian Lawrence Barwick <barwick(at)gmail(dot)com>, pgsql-hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: [PATCH] remove pg_standby
Date: 2021-01-27 05:32:35
Message-ID: CA+hUKGLpjvzW2wUCU-BQSzZK+mK3u8_c3t-ZJCTDezH1cUFAFg@mail.gmail.com
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On Wed, Jan 27, 2021 at 6:06 PM Michael Paquier <michael(at)paquier(dot)xyz> wrote:
> On Wed, Jan 27, 2021 at 04:13:24PM +1300, Thomas Munro wrote:
> > I would like to commit this, because "waiting restore commands" have
> > confusing interactions with my proposed prefetching-during-recovery
> > patch[1]. Here's a version that fixes an error when building the docs
> > (there was a stray remaining <xref linkend="pgstandby"/>), and adds a
> > commit message. Any objections?
>
> It looks like you are missing two references in your patch set:
> $ git grep pg_standby
> doc/src/sgml/high-availability.sgml: Do not use pg_standby or
> similar tools with the built-in standby mode
> src/backend/access/transam/xlog.c: * segment. Only recycle normal
> files, pg_standby for example can create

Thanks, fixed.

> The logic assumed in RemoveXlogFile() is actually a bit scary. I have
> not checked in details but it could be possible to clean up more code
> in this area?

I think the check that it's a regular file is a good idea anyway, but
I removed the offending comment.

> > Furthermore, I think we should also remove the section of the manual
> > that describes how to write your own "waiting restore command".
> > Thoughts?
>
> Agreed. No objections to that.

Thanks!

Attachment Content-Type Size
v4-0001-Retire-pg_standby.patch text/x-patch 45.5 KB
v4-0002-Remove-documentation-of-waiting-restore_command.patch text/x-patch 6.9 KB

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