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 1pUC2x-0005vD-Ie for pgsql-hackers@arkaria.postgresql.org; Mon, 20 Feb 2023 19:41:59 +0000 Received: from localhost ([127.0.0.1] helo=malur.postgresql.org) by malur.postgresql.org with esmtp (Exim 4.92) (envelope-from ) id 1pUC2w-0007KY-Hr for pgsql-hackers@arkaria.postgresql.org; Mon, 20 Feb 2023 19:41:58 +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 1pUC2w-0007KJ-8B for pgsql-hackers@lists.postgresql.org; Mon, 20 Feb 2023 19:41:58 +0000 Received: from mail-pj1-x102b.google.com ([2607:f8b0:4864:20::102b]) by magus.postgresql.org with esmtps (TLS1.3:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.92) (envelope-from ) id 1pUC2u-0006dA-E2 for pgsql-hackers@postgresql.org; Mon, 20 Feb 2023 19:41:57 +0000 Received: by mail-pj1-x102b.google.com with SMTP id ei9-20020a17090ae54900b002349a303ca5so2427929pjb.4 for ; Mon, 20 Feb 2023 11:41:55 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=j-davis-com.20210112.gappssmtp.com; s=20210112; h=mime-version:user-agent:content-transfer-encoding:references :in-reply-to:date:cc:to:from:subject:message-id:from:to:cc:subject :date:message-id:reply-to; bh=e15E4Jq2wB4o9sQeBH6Iuk1qCOioa5FwPrkQlxdjMtE=; b=5w2kLDrCBdzwmH11juSBirPlGAEzsOmQkdhwCc6WZHJus5o+0NZ3Ur0jY7y15jos+M 3nPjPJNhqfZMTDQ534fkY3t2gJiSicVOPlZMbZiv+HfVaWXCIe2Mr4XxCE0Iifi7u4OZ lCAE0EQuP99i5T00+3XLJdkEhcIEWhkXBYdZd7MJ/0VdSnZWt89VPg3wZmJyeGSBiWRN GVNVTwB2edQZCua3nnfYskq0oorb+YAFq0UqtA0ZXOYmzRtoVChQw6Yw1N6vDq2cZ0p+ spKW7M3vLhgQX+w1gjUJT0V4Iop7mGR0YeNWlqqLsD45P7jTZZQx4B5L7Yk223m7sAwi yWQg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=mime-version:user-agent:content-transfer-encoding:references :in-reply-to:date:cc:to:from:subject:message-id:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=e15E4Jq2wB4o9sQeBH6Iuk1qCOioa5FwPrkQlxdjMtE=; b=P3m/SZTpp2HAJ+HwoW47lSBxnGk+cZQcMo4pyE6m6EjGEhFFbZz/t03ouO85A4FgN2 MjOA18l9R6sJ8pE+MUduJoI12K/Au3RX50h1Gu/8/ezHshR5AZazN3MKOmZ5Ruwvrjeb jQi5Yd+PAwmFdpr18TNc1pc+ryBB++PDRoCQUI4aPdQZZBv76Y+cQG78mtHqYbWEDwsI cIaZD7mzDz3XDpw9SaPLY+Xej+22E5DdQgtNBOBaqwS4vGoxOOYUTWOmBGidE4J2qdeb BqXeRD49DuS0wqtRyqJhitR/XBXNe7/Z9pDZKnJQSPtzik0dpBfe4iAhsqmic4nDNmiL nt8w== X-Gm-Message-State: AO0yUKVV2mEwXU5IyBk0TTeFYGtKX2RWH8TOAUsmPEUF2f7PsJopQHG7 zmfqKtsdlACeMcVR0gzDRHXQ7w== X-Google-Smtp-Source: AK7set+eLqa1L4tmvy1J9sGuBu+wU3u2jqM/cGqg3CiBBhbg9BrrLbjmrJaYIVGImoWFu10DRu7jGA== X-Received: by 2002:a17:902:f70c:b0:19c:3d78:6a54 with SMTP id h12-20020a170902f70c00b0019c3d786a54mr2514415plo.14.1676922114008; Mon, 20 Feb 2023 11:41:54 -0800 (PST) Received: from jeff-laptop.lan (c-73-231-146-4.hsd1.ca.comcast.net. [73.231.146.4]) by smtp.gmail.com with ESMTPSA id h12-20020a170902eecc00b0019a96871e09sm8307033plb.211.2023.02.20.11.41.52 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 20 Feb 2023 11:41:53 -0800 (PST) Message-ID: Subject: Re: Move defaults toward ICU in 16? From: Jeff Davis To: Peter Eisentraut , Pavel Stehule Cc: Andres Freund , Tom Lane , Thomas Munro , Robert Haas , pgsql-hackers@postgresql.org Date: Mon, 20 Feb 2023 11:41:52 -0800 In-Reply-To: <96ab0022-b629-2e99-9a4f-f1c886584cd3@enterprisedb.com> References: <510d284759f6e943ce15096167760b2edcb2e700.camel@j-davis.com> <1590310.1675379449@sss.pgh.pa.us> <337d581bae5d6253919f70acdfc184631f0ad41b.camel@j-davis.com> <20230209022234.gihj4apas6ycaddq@awork3.anarazel.de> <5ffeafe843d43a975f31479fbd211ab88404841b.camel@j-davis.com> <20230211020042.uthdgj72kp3xlqam@awork3.anarazel.de> <20230214175957.idkb7shsqzp5nbll@awork3.anarazel.de> <2a7feb71dbdcea31478b3974b8075982ac2326d2.camel@j-davis.com> <96ab0022-b629-2e99-9a4f-f1c886584cd3@enterprisedb.com> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable User-Agent: Evolution 3.44.4-0ubuntu1 MIME-Version: 1.0 List-Id: List-Help: List-Subscribe: List-Post: List-Owner: List-Archive: Archived-At: Precedence: bulk On Mon, 2023-02-20 at 15:55 +0100, Peter Eisentraut wrote: > I'm confused.=C2=A0 We are not going to try to change existing databases > to a=20 > different collation provider during pg_upgrade, are we? No, certainly not. I interpreted Pavel's comments as a comparison of ICU and libc in general and not specific to this patch. Changing providers obviously requires an index rebuild to be safe. --=20 Jeff Davis PostgreSQL Contributor Team - AWS