Received: from malur.postgresql.org ([217.196.149.56]) by arkaria.postgresql.org with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1jOAdk-0007qD-PK for pgsql-hackers@arkaria.postgresql.org; Tue, 14 Apr 2020 01:45:28 +0000 Received: from localhost ([127.0.0.1] helo=malur.postgresql.org) by malur.postgresql.org with esmtp (Exim 4.92) (envelope-from ) id 1jOAdj-0005c9-1B for pgsql-hackers@arkaria.postgresql.org; Tue, 14 Apr 2020 01:45:27 +0000 Received: from makus.postgresql.org ([2001:4800:3e1:1::229]) by malur.postgresql.org with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1jOAdi-0005bQ-Ph for pgsql-hackers@lists.postgresql.org; Tue, 14 Apr 2020 01:45:26 +0000 Received: from sss.pgh.pa.us ([66.207.139.130]) by makus.postgresql.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1jOAda-0002Kb-3J for pgsql-hackers@postgresql.org; Tue, 14 Apr 2020 01:45:25 +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 03E1jG5B008808; Mon, 13 Apr 2020 21:45:16 -0400 From: Tom Lane To: Noah Misch cc: pgsql-hackers@postgresql.org Subject: Re: 001_rep_changes.pl stalls In-reply-to: <20200414013849.GA886648@rfd.leadboat.com> References: <20200406063649.GA3738151@rfd.leadboat.com> <20200414013849.GA886648@rfd.leadboat.com> Comments: In-reply-to Noah Misch message dated "Mon, 13 Apr 2020 18:38:49 -0700" MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-ID: <8806.1586828716.1@sss.pgh.pa.us> Content-Transfer-Encoding: quoted-printable Date: Mon, 13 Apr 2020 21:45:16 -0400 Message-ID: <8807.1586828716@sss.pgh.pa.us> List-Id: List-Help: List-Subscribe: List-Post: List-Owner: List-Archive: Precedence: bulk Noah Misch writes: > This seems to have made the following race condition easier to hit: > https://www.postgresql.org/message-id/flat/20200206074552.GB3326097%40rf= d.leadboat.com > https://www.postgresql.org/message-id/flat/21519.1585272409%40sss.pgh.pa= .us Yeah, I just came to the same guess in the other thread. > While I don't think that indicates anything wrong with the fix for $SUBJ= ECT, > creating more buildfarm noise is itself bad. I am inclined to revert th= e fix > after a week. Not immediately, in case it uncovers lower-probability bu= gs. > I'd then re-commit it after one of those threads fixes the other bug. W= ould > anyone like to argue for a revert earlier, later, or not at all? I don't think you should revert. Those failures are (just) often enough to be annoying but I do not think that a proper fix is very far away. regards, tom lane