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 1n5heD-0007Ik-EW for pgsql-hackers@arkaria.postgresql.org; Fri, 07 Jan 2022 05:18:41 +0000 Received: from localhost ([127.0.0.1] helo=malur.postgresql.org) by malur.postgresql.org with esmtp (Exim 4.92) (envelope-from ) id 1n5heC-0000fN-An for pgsql-hackers@arkaria.postgresql.org; Fri, 07 Jan 2022 05:18:40 +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 1n5heC-0000fE-1R for pgsql-hackers@lists.postgresql.org; Fri, 07 Jan 2022 05:18:40 +0000 Received: from oss.nttdata.com ([49.212.34.109]) by magus.postgresql.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1n5he9-00033u-5v for pgsql-hackers@postgresql.org; Fri, 07 Jan 2022 05:18:39 +0000 Received: from [192.168.11.7] (p2638163-ipngn12701funabasi.chiba.ocn.ne.jp [180.59.132.163]) by oss.nttdata.com (Postfix) with ESMTPSA id 6F1D96059B; Fri, 7 Jan 2022 14:18:31 +0900 (JST) X-Virus-Status: Clean X-Virus-Scanned: clamav-milter 0.103.4 at oss.nttdata.com Message-ID: Date: Fri, 7 Jan 2022 14:18:30 +0900 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:91.0) Gecko/20100101 Thunderbird/91.4.1 Subject: Re: Add 64-bit XIDs into PostgreSQL 15 Content-Language: en-US To: Simon Riggs , Maxim Orlov Cc: pgsql-hackers References: From: Fujii Masao In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit List-Id: List-Help: List-Subscribe: List-Post: List-Owner: List-Archive: Archived-At: Precedence: bulk On 2022/01/06 19:24, Simon Riggs wrote: > On Thu, 30 Dec 2021 at 13:19, Maxim Orlov wrote: > >> Your opinions are very much welcome! > > This is a review of the Int64 options patch, > "v6-0001-Add-64-bit-GUCs-for-xids.patch" Do we really need to support both int32 and int64 options? Isn't it enough to replace the existing int32 option with int64 one? Or how about using string-type option for very large number like 64-bit XID, like it's done for recovery_target_xid? Regards, -- Fujii Masao Advanced Computing Technology Center Research and Development Headquarters NTT DATA CORPORATION