Received: from malur.postgresql.org ([217.196.149.56]) by arkaria.postgresql.org with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1sY6AV-008o6W-4p for pgsql-hackers@arkaria.postgresql.org; Sun, 28 Jul 2024 15:50:43 +0000 Received: from localhost ([127.0.0.1] helo=malur.postgresql.org) by malur.postgresql.org with esmtp (Exim 4.94.2) (envelope-from ) id 1sY6AS-00BuL4-OL for pgsql-hackers@arkaria.postgresql.org; Sun, 28 Jul 2024 15:50:40 +0000 Received: from magus.postgresql.org ([2a02:c0:301:0:ffff::29]) by malur.postgresql.org with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1sY6AS-00BuKw-Ea for pgsql-hackers@lists.postgresql.org; Sun, 28 Jul 2024 15:50:40 +0000 Received: from sss.pgh.pa.us ([68.162.161.243]) by magus.postgresql.org with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1sY6AP-001vEm-JU for pgsql-hackers@postgresql.org; Sun, 28 Jul 2024 15:50:39 +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 46SFoXhn2250944; Sun, 28 Jul 2024 11:50:33 -0400 From: Tom Lane To: Noah Misch cc: Alexander Lakhin , pgsql-hackers@postgresql.org Subject: Re: race condition in pg_class In-reply-to: <20240720112835.f5.nmisch@google.com> References: <20231027232612.99.nmisch@google.com> <20231102030915.d3.nmisch@google.com> <20240512232923.aa.nmisch@google.com> <20240605181706.fe.nmisch@google.com> <20240611024525.9f.nmisch@google.com> <20240614003549.c2.nmisch@google.com> <20240621212842.98.nmisch@google.com> <20240628051353.a0.nmisch@google.com> <20240720112835.f5.nmisch@google.com> Comments: In-reply-to Noah Misch message dated "Sat, 20 Jul 2024 04:28:35 -0700" MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-ID: <2250942.1722181833.1@sss.pgh.pa.us> Content-Transfer-Encoding: quoted-printable Date: Sun, 28 Jul 2024 11:50:33 -0400 Message-ID: <2250943.1722181833@sss.pgh.pa.us> List-Id: List-Help: List-Subscribe: List-Post: List-Owner: List-Archive: Archived-At: Precedence: bulk Noah Misch writes: > On Sat, Jul 20, 2024 at 11:00:00AM +0300, Alexander Lakhin wrote: >> A recent buildfarm test failure [1] showed that the >> intra-grant-inplace-db.spec test added with 0844b3968 may fail >> on a slow machine >> But as the test going to be modified by the inplace110-successors-v8.pa= tch >> and the modified test (with all three latest patches applied) passes >> reliably in the same conditions, maybe this failure doesn't deserve a >> deeper exploration. > Agreed. Let's just wait for code review of the actual bug fix, not deve= lop a > separate change to stabilize the test. One flake in three weeks is low = enough > to make that okay. It's now up to three similar failures in the past ten days: in addition to https://buildfarm.postgresql.org/cgi-bin/show_log.pl?nm=3Dhabu&dt=3D2024-0= 7-18%2003%3A08%3A08 I see https://buildfarm.postgresql.org/cgi-bin/show_log.pl?nm=3Durutu&dt=3D2024-= 07-22%2018%3A00%3A46 https://buildfarm.postgresql.org/cgi-bin/show_log.pl?nm=3Dtaipan&dt=3D2024= -07-28%2012%3A20%3A37 Is it time to worry yet? If this were HEAD only, I'd not be too concerned; but two of these three are on allegedly-stable branches. And we have releases coming up fast. (BTW, I don't think taipan qualifies as a slow machine.) regards, tom lane