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 1lO5GF-0007ui-9P for pgsql-hackers@arkaria.postgresql.org; Sun, 21 Mar 2021 21:05:23 +0000 Received: from localhost ([127.0.0.1] helo=malur.postgresql.org) by malur.postgresql.org with esmtp (Exim 4.92) (envelope-from ) id 1lO5GE-0007KK-1w for pgsql-hackers@arkaria.postgresql.org; Sun, 21 Mar 2021 21:05:22 +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 1lO5GD-0007KD-Qx for pgsql-hackers@lists.postgresql.org; Sun, 21 Mar 2021 21:05:21 +0000 Received: from sss.pgh.pa.us ([66.207.139.130]) by makus.postgresql.org with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1lO5GB-0000ag-Qq for pgsql-hackers@lists.postgresql.org; Sun, 21 Mar 2021 21:05:20 +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 12LL5FnL456617; Sun, 21 Mar 2021 17:05:15 -0400 From: Tom Lane To: Justin Pryzby cc: Dilip Kumar , Robert Haas , Andres Freund , Tomas Vondra , Alexander Korotkov , David Steele , Ildus Kurbangaliev , Dmitry Dolgov <9erthalion6@gmail.com>, Andrey Borodin , PostgreSQL Hackers Subject: Re: [HACKERS] Custom compression methods (mac+lz4.h) In-reply-to: <20210321204148.GB4203@telsasoft.com> References: <20210319174425.GM11765@telsasoft.com> <20210320212302.GW11765@telsasoft.com> <301730.1616276227@sss.pgh.pa.us> <20210320231957.GX11765@telsasoft.com> <309337.1616287493@sss.pgh.pa.us> <311370.1616290403@sss.pgh.pa.us> <414943.1616358751@sss.pgh.pa.us> <20210321204148.GB4203@telsasoft.com> Comments: In-reply-to Justin Pryzby message dated "Sun, 21 Mar 2021 15:41:48 -0500" MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-ID: <456615.1616360715.1@sss.pgh.pa.us> Date: Sun, 21 Mar 2021 17:05:15 -0400 Message-ID: <456616.1616360715@sss.pgh.pa.us> List-Id: List-Help: List-Subscribe: List-Post: List-Owner: List-Archive: Archived-At: Precedence: bulk Justin Pryzby writes: > On Sun, Mar 21, 2021 at 04:32:31PM -0400, Tom Lane wrote: >> This seems somewhat repeatable (three identical failures in three >> attempts). Not sure why I did not see it yesterday; but anyway, >> there is something wrong with partial detoasting for LZ4. > With what version of LZ4 ? RHEL8's, which is lz4-1.8.3-2.el8.x86_64 regards, tom lane