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 4.96) (envelope-from ) id 1whFhc-0006ge-1U for pgsql-hackers@arkaria.postgresql.org; Tue, 07 Jul 2026 23:59:49 +0000 Received: from localhost ([127.0.0.1] helo=malur.postgresql.org) by malur.postgresql.org with esmtp (Exim 4.96) (envelope-from ) id 1whFha-003ela-39 for pgsql-hackers@arkaria.postgresql.org; Tue, 07 Jul 2026 23:59:47 +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 4.96) (envelope-from ) id 1whFha-003elQ-0i for pgsql-hackers@lists.postgresql.org; Tue, 07 Jul 2026 23:59:47 +0000 Received: from fout-b1-smtp.messagingengine.com ([202.12.124.144]) by magus.postgresql.org with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.98.2) (envelope-from ) id 1whFhX-0000000088G-1lbh for pgsql-hackers@lists.postgresql.org; Tue, 07 Jul 2026 23:59:46 +0000 Received: from phl-compute-02.internal (phl-compute-02.internal [10.202.2.42]) by mailfout.stl.internal (Postfix) with ESMTP id 418BA1D00095; Tue, 7 Jul 2026 19:59:41 -0400 (EDT) Received: from phl-frontend-03 ([10.202.2.162]) by phl-compute-02.internal (MEProxy); Tue, 07 Jul 2026 19:59:41 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=paquier.xyz; h= cc:cc:content-type:content-type:date:date:from:from:in-reply-to :in-reply-to:message-id:mime-version:references:reply-to:subject :subject:to:to; s=fm2; t=1783468781; x=1783555181; bh=NjDwHrBJWf b5aEQsXoulXZT4Rw9++kCaHZX2qTPtpwM=; b=WXQA+iYDIp1tn5JkTQUaTw/Acw vsfTTOQqILCx7uc1ctvIzoPEOBGqt+cUqc3kuUD0i9z94qPIppnGTmG8BcQsAkym FjmqnAqXnlS2Bfw4oquhIKlYxN2iNLvSQKmR3PKScVqszZYl9KoEDJTHVpMr6Gnd mOPXZRa+AdxpQE5iNlLYx48fFryWCm4Hyy2j6mPWc4V047SDq/a5byNOIsk4cV7W 7vzAdMP8c7s+vut/4Pz0ZNHu/orp5MOoWHGRv8fqxxRHQo/FT0fGgvu98jl5C7Sf FyN4qSN/tvb2BC88Wa44LfXby4LiocwH2BMr2IM/EgXOYNDWn4iAgVJk5W0A== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:cc:content-type:content-type:date:date :feedback-id:feedback-id:from:from:in-reply-to:in-reply-to :message-id:mime-version:references:reply-to:subject:subject:to :to:x-me-proxy:x-me-sender:x-me-sender:x-sasl-enc; s=fm2; t= 1783468781; x=1783555181; bh=NjDwHrBJWfb5aEQsXoulXZT4Rw9++kCaHZX 2qTPtpwM=; b=Qtv1Nq9cxsTeXZWEOF0mz4aLM14JZgTipEtRUXdpCVG/NZsyHpv uZ8FB4JgUEGcL3QRtQ0fk5Bn3/2NnzvD+n8Kz+Zj7vTJsTvURtn6bIcxHMU/3cyM d9TrFzjG0MsM6Sf29gMe8MPblwVIrhr1ZRD6WdDg2zhLLoGVcTYTNqhQ0OqACXv1 lG4lQ3N+H5ESjjqI0dbD/peg7lnKVY+C00//RlFoCX8gSpIL8y8KB7vLZCZH+J7D ld6cQOA3wCmECCjH/3ixfyUpHiw2UP+SnY+TLD/n+JtJG6+VAD8YhPc/Kv33aSWq pwFEyedivur5YytH6J7fvBuy+jnZG+56BHQ== X-ME-Sender: X-ME-Received: X-ME-Proxy-Cause: dmFkZTGprRMVGJ42sZ4O3QjmtW7/G6LfQWg9n788PQKaNud7H5WPRCak2Zxs46CQ5yeVKj ScZvCTehn2OwBsw0ecWGrFNDYPYK8phvjCcDp5BBXJYbW5dMOyPtmesTdjhwlLJAprOUiS e1fhSkFgvdOgQYLKlR/Awk9BVT1zlT29BQDqgaoY3y2v08ugZvql1122t14HDLWbIhzvSv KRYhuUKNMlge3OKhEzq74r3GQX1lux5f+1qouh/TimqhaSnPLzSrA+HlCNVH+8XcjBJbD7 KdtY/XdPSSmvpNNHggWP3LLr04olORgRcwTswNPf4s3ZGr1XJwDaxdGqJiB/SRcVjcKbpK wHVlMfEvESEFBQObFmQWB7/hzbpJ1VG3pRM2Tkkb1Xi/zWbd0Y8jEE7nUwavArYAc41G9r wmFL6AhcALtx0LXsRGEh7Y7G46oQvavhS127qA6d0on+aDgta5GTy1EEyazFgno2fNHOV4 GxvuWKB7+Hcdj1z8FnQEioYN1XeZvTf63CwC9rcOTO14y1ChLcYPZPHQk+eW9Kx0cc6K9z KARM1jzjAqfUGYaCtR4CyS+hvKXYd8Wv5f7NBbuLovA8K3+Kkj4mJVUc6RQw0PVwJpgekl KhkbukTevsbZWSl7JmXGf7hlJfEK1fgntrEjdfQNmKim0lr2Vo2ky2JkkGyA X-ME-Proxy: Feedback-ID: i0fe9450f:Fastmail Received: by mail.messagingengine.com (Postfix) with ESMTPA; Tue, 7 Jul 2026 19:59:39 -0400 (EDT) Date: Wed, 8 Jul 2026 08:59:35 +0900 From: Michael Paquier To: Kouber Saparev Cc: Bertrand Drouvot , pgsql-hackers@lists.postgresql.org Subject: Re: BF mamba failure Message-ID: References: MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="og+Z67o3iQpZjLGv" Content-Disposition: inline In-Reply-To: List-Id: List-Help: List-Subscribe: List-Post: List-Owner: List-Archive: Archived-At: Precedence: bulk --og+Z67o3iQpZjLGv Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Tue, Jul 07, 2026 at 01:13:59PM +0300, Kouber Saparev wrote: > We had this issue again, the database just stopped - PostgreSQL 17.6. >=20 > FATAL,XX000,"trying to drop stats entry already dropped: kind=3Drelation > dboid=3D16420 objoid=3D3885511363 refcount=3D1 generation=3D0" >=20 > There is no such object present in the database. >=20 > Do you think the issue might be fixed in PostgreSQL 18.4?... Or PostgreSQL > 19 eventually? Well, honestly, hard to say. That's a case where a reproducible scenario would be useful, as it seems to ve very workload dependent in terms of handling of the relation entries.. (Aka I have not dug in details how to do that.) As one example, the buildfarm seems to be quite silent, but it would help if we need something like a wraparound for better reproducibility. -- Michael --og+Z67o3iQpZjLGv Content-Type: application/pgp-signature; name=signature.asc -----BEGIN PGP SIGNATURE----- iQIzBAEBCgAdFiEEG72nH6vTowiyblFKnvQgOdbyQH0FAmpNkucACgkQnvQgOdby QH0u7g//YuxfAIpGM44upX2q/B+sf5VwIn+Le2Hz5LaJmH3UwY0dL+Ff1Ns4RUWG Pzcye6tChjQDPWKSbhdar3kIoOtrXiglmprgDQMJWnn9epS7Nmyz20LUYRgumDWi pyMRo0JyhpD2pt4RlvIk5+6eS8k0qHpJHn8anDTxepZ3Z7WCAata8gweEjs1UxJT t3621dyCe3449zguhuWWGN58D+pAvuP0Eq+JMCXFt3jHwJLxgQZjnzjnXsk7zzY+ ibpiSVPBmjsLS4Z/k4eOmCtq7cOhQumIMvzZZuNGHjDdxbokjFH7KOdQwo6ibwS4 KSY2pOXG7/nwCnURr5auSUWXBOShM5wFTFfJYGuQ4dbW8H9na1xhkZHLR5aBppbn ItLsumRey+DWh9h/VVOL0L0hBtjdjqlfNbOZUMUYrGJP47A9oaGmu7xj7LRYUoa9 M7Y4FmOww4gfPRa33kvWZ4tmBdmBCm7Ng4L6mqF9kmwXVbZonLGQQCO/XkFAtBdZ TH6WT8fn+SSUS1QKaYgYoNsnzHW+JfgqNDdJu5EOXy3iu1eGRMyzTHXGKo5ff+Gc ybkOsbWUPNk4+HuLg9+KF0j++ZZDRtiLwJZnxMu4I4SRYyf/cQiAzEB+oIw7dvRM ZYplefqUkUByKxqDl/RpOkp7SVU6+2EEbEGRB8gSu6pETcjkuPw= =EGyw -----END PGP SIGNATURE----- --og+Z67o3iQpZjLGv--