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 1nfBtN-0003Fr-Pc for pgsql-hackers@arkaria.postgresql.org; Fri, 15 Apr 2022 02:41:01 +0000 Received: from localhost ([127.0.0.1] helo=malur.postgresql.org) by malur.postgresql.org with esmtp (Exim 4.92) (envelope-from ) id 1nfBtM-0005BF-Gx for pgsql-hackers@arkaria.postgresql.org; Fri, 15 Apr 2022 02:41:00 +0000 Received: from magus.postgresql.org ([2a02:c0:301:0:ffff::29]) by malur.postgresql.org with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1nfBtM-00057v-71 for pgsql-hackers@lists.postgresql.org; Fri, 15 Apr 2022 02:41:00 +0000 Received: from sss.pgh.pa.us ([66.207.139.130]) by magus.postgresql.org with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1nfBtI-0003cE-Cz for pgsql-hackers@lists.postgresql.org; Fri, 15 Apr 2022 02:40:59 +0000 Received: from sss1.sss.pgh.pa.us (localhost [127.0.0.1]) by sss.pgh.pa.us (8.15.2/8.15.2) with ESMTP id 23F2epVS1576926; Thu, 14 Apr 2022 22:40:51 -0400 From: Tom Lane To: Peter Geoghegan cc: Andres Freund , Noah Misch , David Rowley , PostgreSQL Hackers Subject: Re: Intermittent buildfarm failures on wrasse In-reply-to: References: <1364997.1649893086@sss.pgh.pa.us> <1365924.1649893883@sss.pgh.pa.us> <1374062.1649896550@sss.pgh.pa.us> <20220414010505.s7z24jxrfsjbzz7l@alap3.anarazel.de> <1401379.1649899392@sss.pgh.pa.us> <20220414015112.yhruzx3dbjnz4pji@alap3.anarazel.de> <20220414025122.GA808845@rfd.leadboat.com> <1486022.1649952083@sss.pgh.pa.us> <20220414161850.ibqkevxcv6a7vdxg@alap3.anarazel.de> <1521388.1649953580@sss.pgh.pa.us> <1547912.1649971995@sss.pgh.pa.us> <1553951.1649975018@sss.pgh.pa.us> <1570894.1649986347@sss.pgh.pa.us> <1572437.1649987614@sss.pgh.pa.us> <1574961.1649989229@sss.pgh.pa.us> Comments: In-reply-to Peter Geoghegan message dated "Thu, 14 Apr 2022 19:27:26 -0700" MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-ID: <1576924.1649990451.1@sss.pgh.pa.us> Date: Thu, 14 Apr 2022 22:40:51 -0400 Message-ID: <1576925.1649990451@sss.pgh.pa.us> List-Id: List-Help: List-Subscribe: List-Post: List-Owner: List-Archive: Archived-At: Precedence: bulk Peter Geoghegan writes: > Suppose that the bug was actually in 06f5295af6, "Add single-item > cache when looking at topmost XID of a subtrans XID". Doesn't that fit > your timeline just as well? I'd dismissed that on the grounds that there are no subtrans XIDs involved in tenk1's contents. However, if that patch was faulty enough, maybe it affected other cases besides the advertised one? I've not read it. regards, tom lane