Re: Quorum commit for multiple synchronous replication.

From: Robert Haas <robertmhaas(at)gmail(dot)com>
To: Michael Paquier <michael(dot)paquier(at)gmail(dot)com>
Cc: Masahiko Sawada <sawada(dot)mshk(at)gmail(dot)com>, Josh Berkus <josh(at)berkus(dot)org>, Noah Misch <noah(at)leadboat(dot)com>, Petr Jelinek <petr(dot)jelinek(at)2ndquadrant(dot)com>, Fujii Masao <masao(dot)fujii(at)gmail(dot)com>, Kyotaro HORIGUCHI <horiguchi(dot)kyotaro(at)lab(dot)ntt(dot)co(dot)jp>, Amit Kapila <amit(dot)kapila16(at)gmail(dot)com>, Petr Jelinek <petr(at)2ndquadrant(dot)com>, Vik Fearing <vik(at)2ndquadrant(dot)fr>, Simon Riggs <simon(at)2ndquadrant(dot)com>, Josh Berkus <josh(at)agliodbs(dot)com>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Quorum commit for multiple synchronous replication.
Date: 2017-08-18 15:28:18
Message-ID: CA+TgmobkxXx4X5TokKyNT-C4Sg7MCOt9vhjgnog9yQiOEOq26A@mail.gmail.com
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On Thu, Aug 17, 2017 at 1:13 AM, Michael Paquier
<michael(dot)paquier(at)gmail(dot)com> wrote:
> I had in mind a ereport(WARNING) in create_syncrep_config. Extra
> thoughts/opinions welcome.

I think for v10 we should just document the behavior we've got; I
think it's too late to be whacking things around now.

For v11, we could emit a warning if we plan to deprecate and
eventually remove the syntax without ANY/FIRST, but let's not do:

WARNING: what you did is ok, but you might have wanted to do something else

First of all, whether or not that can properly be called a warning is
highly debatable. Also, if you do that sort of thing to your spouse
and/or children, they call it "nagging". I don't think users will
like it any more than family members do.

--
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company

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