Received: from malur.postgresql.org ([217.196.149.56])
	by arkaria.postgresql.org with esmtps
 (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA384:256)
	(Exim 4.89)
	(envelope-from <pgsql-hackers-owner+archive@lists.postgresql.org>)
	id 1f3NNv-0000TG-W3
	for pgsql-hackers@arkaria.postgresql.org; Tue, 03 Apr 2018 14:58:08 +0000
Received: from localhost ([127.0.0.1] helo=malur.postgresql.org)
	by malur.postgresql.org with esmtp (Exim 4.89)
	(envelope-from <pgsql-hackers-owner+archive@lists.postgresql.org>)
	id 1f3NNu-0007fi-IU
	for pgsql-hackers@arkaria.postgresql.org; Tue, 03 Apr 2018 14:58:06 +0000
Received: from magus.postgresql.org ([2a02:c0:301:0:ffff::29])
	by malur.postgresql.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA384:256)
	(Exim 4.89)
	(envelope-from <tgl@sss.pgh.pa.us>)
	id 1f3NLB-00043Y-B1
	for pgsql-hackers@lists.postgresql.org; Tue, 03 Apr 2018 14:55:17 +0000
Received: from sss.pgh.pa.us ([66.207.139.130])
	by magus.postgresql.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA384:256)
	(Exim 4.89)
	(envelope-from <tgl@sss.pgh.pa.us>)
	id 1f3NL7-00019l-Qb
	for pgsql-hackers@postgresql.org; Tue, 03 Apr 2018 14:55:16 +0000
Received: from sss1.sss.pgh.pa.us (localhost [127.0.0.1])
	by sss.pgh.pa.us (8.14.4/8.14.4) with ESMTP id w33Et51D006103;
	Tue, 3 Apr 2018 10:55:05 -0400
From: Tom Lane <tgl@sss.pgh.pa.us>
To: Tomas Vondra <tomas.vondra@2ndquadrant.com>
cc: Andrew Dunstan <andrew@dunslane.net>,
        Alvaro Herrera <alvherre@alvh.no-ip.org>,
        Stas Kelvich <s.kelvich@postgrespro.ru>,
        Nikhil Sontakke <nikhils@2ndquadrant.com>,
        Andres Freund <andres@anarazel.de>,
        Simon Riggs <simon@2ndquadrant.com>,
        Craig Ringer <craig@2ndquadrant.com>,
        Peter Eisentraut <peter.eisentraut@2ndquadrant.com>,
        Petr Jelinek <petr.jelinek@2ndquadrant.com>,
        Sokolov Yura <y.sokolov@postgrespro.ru>,
        Dmitry Dolgov <9erthalion6@gmail.com>,
        Masahiko Sawada <sawada.mshk@gmail.com>,
        PostgreSQL Hackers <pgsql-hackers@postgresql.org>,
        Robert Haas <robertmhaas@gmail.com>
Subject: Re: [HACKERS] logical decoding of two-phase transactions
In-reply-to: <52ebcc54-9952-79da-64fe-f28f539bec00@2ndquadrant.com>
References: <20180403143736.z42lxviikrf4iyxc@alvherre.pgsql>
 <52ebcc54-9952-79da-64fe-f28f539bec00@2ndquadrant.com>
Comments: In-reply-to Tomas Vondra <tomas.vondra@2ndquadrant.com>
	message dated "Tue, 03 Apr 2018 16:38:55 +0200"
MIME-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-ID: <6101.1522767305.1@sss.pgh.pa.us>
Date: Tue, 03 Apr 2018 10:55:05 -0400
Message-ID: <6102.1522767305@sss.pgh.pa.us>
List-Id: <pgsql-hackers.lists.postgresql.org>
List-Help: <https://lists.postgresql.org/manage/>
List-Subscribe: <https://lists.postgresql.org/manage/>
List-Post: <mailto:pgsql-hackers@lists.postgresql.org>
List-Owner: <mailto:pgsql-hackers-owner@lists.postgresql.org>
List-Archive: <https://www.postgresql.org/list/pgsql-hackers>
Precedence: bulk

Tomas Vondra <tomas.vondra@2ndquadrant.com> writes:
> On 04/03/2018 04:37 PM, Alvaro Herrera wrote:
>> Tomas Vondra wrote:
>>> Yes, that is a good point actually - we need to test that replication
>>> between PG10 and PG11 works correctly, i.e. that the protocol version is
>>> correctly negotiated, and features are disabled/enabled accordingly etc.

>> Maybe it'd be good to have a buildfarm animal to specifically test for
>> that?

> Not sure a buildfarm supports running two clusters with different
> versions easily?

You'd need some specialized buildfarm infrastructure like --- maybe the
same as --- the infrastructure for testing cross-version pg_upgrade.
Andrew could speak to the details better than I.

			regards, tom lane