Re: [PATCH] Rename pg_switch_xlog to pg_switch_wal

From: Andres Freund <andres(at)anarazel(dot)de>
To: Stephen Frost <sfrost(at)snowman(dot)net>
Cc: Jim Nasby <Jim(dot)Nasby(at)BlueTreble(dot)com>,Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>,Vladimir Rusinov <vrusinov(at)google(dot)com>,Euler Taveira <euler(at)timbira(dot)com(dot)br>,David Steele <david(at)pgmasters(dot)net>,Michael Paquier <michael(dot)paquier(at)gmail(dot)com>,Peter Eisentraut <peter(dot)eisentraut(at)2ndquadrant(dot)com>,Cynthia Shang <cynthia(dot)shang(at)crunchydata(dot)com>,PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: [PATCH] Rename pg_switch_xlog to pg_switch_wal
Date: 2017-01-12 18:52:36
Message-ID: C785911F-66EB-428D-8569-1B4D6E3AFAE6@anarazel.de
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On January 12, 2017 10:50:18 AM PST, Stephen Frost <sfrost(at)snowman(dot)net> wrote:
>* Andres Freund (andres(at)anarazel(dot)de) wrote:
>> On 2017-01-12 13:40:50 -0500, Stephen Frost wrote:
>> > * Jim Nasby (Jim(dot)Nasby(at)BlueTreble(dot)com) wrote:
>> > > The way I see it, either one person can spend an hour or whatever
>> > > creating an extension once, or every postgres install that's
>using
>> > > any of these functions now has yet another hurdle to upgrading.
>> >
>> > I just don't buy this argument, at all. These functions names are
>> > certainly not the only things we're changing with PG10 and serious
>> > monitoring/backup/administration tools are almost certainly going
>to
>> > have quite a bit to adjust to with the new release, and that isn't
>news
>> > to anyone who works with PG.
>>
>> By that argument we can just do arbitrary backward incompat changes.
>We
>> should aspire to be better than we've been in the past, not use that
>> past as an excuse for not even trying.
>
>When they're changes that are primairly going to affect
>monitoring/backup/administration tools, yes, I do think we can make
>just
>about arbitrary backward-incompatible changes.
>
>As Robert mentioned, and I agree with, changing things which will
>impact
>regular application usage of PG is a different story and one we should
>be more cautious about.

I find it very hard to understand the justification for that, besides that it's strengthening external projects providing monitoring, backup, etc in a compatible way.

Andres

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