Re: Online enabling of checksums

From: Andres Freund <andres(at)anarazel(dot)de>
To: Magnus Hagander <magnus(at)hagander(dot)net>
Cc: Andrey Borodin <x4mmm(at)yandex-team(dot)ru>, Daniel Gustafsson <daniel(at)yesql(dot)se>, Tomas Vondra <tomas(dot)vondra(at)2ndquadrant(dot)com>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>, Michael Banck <michael(dot)banck(at)credativ(dot)de>
Subject: Re: Online enabling of checksums
Date: 2018-03-02 07:44:30
Message-ID: 20180302074430.6opqukpeabbspcrm@alap3.anarazel.de
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On 2018-03-01 16:18:48 +0100, Magnus Hagander wrote:
> On Thu, Mar 1, 2018 at 9:04 AM, Andres Freund <andres(at)anarazel(dot)de> wrote:
>
> > On 2018-03-01 12:56:35 +0500, Andrey Borodin wrote:
> > > I've tried to rebase this patch to 10 and, despite minor rebase issues
> > (oids, bgw_type, changes to specscanner), patch works fine.
> > > Do we provide backporting for such features?
> >
> > Definitely not. With very rare exceptions (OS compatibility and the
> > like), features aren't backported.
> >
>
> Yeah. And definitely not something that both changes the format of
> pg_control (by adding new possible values to the checksum field) *and* adds
> a new WAL record type...

And even more so, I'm not even sure it makes sense to try to get this
into v11. This is a medium-large complicated feature, submitted to the
last CF for v11. That's pretty late. Now, Magnus is a committer, but
nevertheless...

Greetings,

Andres Freund

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