Received: from malur.postgresql.org ([217.196.149.56]) by arkaria.postgresql.org with esmtp (Exim 4.84_2) (envelope-from ) id 1bDkeL-0008SP-Ko for pgsql-hackers@arkaria.postgresql.org; Fri, 17 Jun 2016 03:40:53 +0000 Received: from localhost ([127.0.0.1] helo=postgresql.org) by malur.postgresql.org with smtp (Exim 4.84_2) (envelope-from ) id 1bDkeK-0007ev-Mf for pgsql-hackers@arkaria.postgresql.org; Fri, 17 Jun 2016 03:40:52 +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 4.84_2) (envelope-from ) id 1bDkeJ-0007e4-Eq for pgsql-hackers@postgresql.org; Fri, 17 Jun 2016 03:40:51 +0000 Received: from smtprelay0043.b.hostedemail.com ([64.98.42.43] helo=smtprelay.b.hostedemail.com) by magus.postgresql.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA384:256) (Exim 4.84_2) (envelope-from ) id 1bDkeB-0001XW-6E for pgsql-hackers@postgresql.org; Fri, 17 Jun 2016 03:40:50 +0000 Received: from filter.hostedemail.com (10.5.19.248.rfc1918.com [10.5.19.248]) by smtprelay03.b.hostedemail.com (Postfix) with ESMTP id 1004A1A73BF; Fri, 17 Jun 2016 03:40:41 +0000 (UTC) X-Session-Marker: 616C76686572726540616C76682E6E6F2D69702E6F7267 X-Spam-Summary: 50,0,0,,d41d8cd98f00b204,alvherre@alvh.no-ip.org,:::::,RULES_HIT:41:355:379:599:967:973:988:989:1260:1263:1277:1311:1312:1313:1314:1345:1359:1437:1515:1516:1518:1519:1534:1538:1566:1593:1594:1595:1596:1711:1714:1730:1747:1777:1792:2393:2525:2560:2563:2682:2685:2828:2859:2933:2937:2939:2942:2945:2947:2951:2954:3022:3138:3139:3140:3141:3142:3865:3867:3868:3871:3874:3934:3936:3938:3941:3944:3947:3950:3953:3956:3959:4605:4659:5007:6119:6261:9025:9121:10004:10394:10400:10848:11232:11256:11257:11638:11658:11914:12517:12519:12660:13069:13311:13357:13439:13894:13895:14721:14764:21080:30054:30070:30091,0,RBL:none,CacheIP:none,Bayesian:0.5,0.5,0.5,Netcheck:none,DomainCache:0,MSF:not bulk,SPF:fn,MSBL:0,DNSBL:none,Custom_rules:0:0:0,LFtime:55,LUA_SUMMARY:none X-HE-Tag: slave99_7a48dbc05194a X-Filterd-Recvd-Size: 1337 Received: from alvin.alvh.no-ip.org (unknown [186.9.91.53]) (Authenticated sender: alvherre@alvh.no-ip.org) by omf06.b.hostedemail.com (Postfix) with ESMTPA; Fri, 17 Jun 2016 03:40:40 +0000 (UTC) Received: by alvin.alvh.no-ip.org (Postfix, from userid 1000) id 89F4B4CC; Thu, 16 Jun 2016 23:40:36 -0400 (CLT) Date: Thu, 16 Jun 2016 23:40:36 -0400 From: Alvaro Herrera To: Andrew Gierth Cc: Stephen Frost , pgsql-hackers@postgresql.org Subject: Re: MultiXactId error after upgrade to 9.3.4 Message-ID: <20160617034036.GA107780@alvherre.pgsql> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20160617033122.GA106332@alvherre.pgsql> User-Agent: Mutt/1.5.23 (2014-03-12) X-Pg-Spam-Score: 0.4 (/) List-Archive: List-Help: List-ID: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: X-Mailing-List: pgsql-hackers Precedence: bulk Sender: pgsql-hackers-owner@postgresql.org Alvaro Herrera wrote: > Andrew Gierth wrote: > > Why is the correct rule not "check for and ignore pre-upgrade mxids > > before even trying to fetch members"? > > I propose something like the attached patch, which implements that idea. Hm, this doesn't apply cleanly to 9.4. I'll need to come up with a merge tomorrow. -- Álvaro Herrera http://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers