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 1kXUT2-0001Bs-1E for pgsql-hackers@arkaria.postgresql.org; Tue, 27 Oct 2020 19:17:12 +0000 Received: from localhost ([127.0.0.1] helo=malur.postgresql.org) by malur.postgresql.org with esmtp (Exim 4.92) (envelope-from ) id 1kXUSx-0006v6-Cj for pgsql-hackers@arkaria.postgresql.org; Tue, 27 Oct 2020 19:17:07 +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 1kXUSx-0006uz-5v for pgsql-hackers@lists.postgresql.org; Tue, 27 Oct 2020 19:17:07 +0000 Received: from mahout.postgresql.org ([2001:4800:3e1:1::227]) by magus.postgresql.org with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1kXUSu-0000fW-Li for pgsql-hackers@lists.postgresql.org; Tue, 27 Oct 2020 19:17:06 +0000 Received: from coridan.postgresql.org ([2001:4800:3e1:1::213]) by mahout.postgresql.org with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1kXUSs-0007Rc-Tf for pgsql-hackers@lists.postgresql.org; Tue, 27 Oct 2020 19:17:02 +0000 Received: from localhost ([127.0.0.1] helo=coridan.postgresql.org) by coridan.postgresql.org with esmtp (Exim 4.92) (envelope-from ) id 1kXUSs-0008Ln-I9 for pgsql-hackers@lists.postgresql.org; Tue, 27 Oct 2020 19:17:02 +0000 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: base64 Subject: Re: COPY FREEZE and setting PD_ALL_VISIBLE/visibility map bits To: pgsql-hackers@lists.postgresql.org From: Anastasia Lubennikova Cc: Pavan Deolasee , Ibrar Ahmed Date: Tue, 27 Oct 2020 19:16:11 +0000 User-Agent: pgcommitfest X-cfsender: lubennikovaav In-Reply-To: References: Message-ID: <160382617166.1204.475752573208579406.pgcf@coridan.postgresql.org> List-Id: List-Help: List-Subscribe: List-Post: List-Owner: List-Archive: Precedence: bulk U3RhdHVzIHVwZGF0ZSBmb3IgYSBjb21taXRmZXN0IGVudHJ5Lg0KDQpUaGlzIHBhdGNoIGlzIFJl YWR5Rm9yQ29tbWl0dGVyLiBJdCBhcHBsaWVzIGFuZCBwYXNzZXMgdGhlIENJLiBUaGVyZSBhcmUg bm8gdW5hbnN3ZXJlZCBxdWVzdGlvbnMgaW4gdGhlIGRpc2N1c3Npb24uIA0KDQpUaGUgZGlzY3Vz c2lvbiBzdGFydGVkIGluIDIwMTUgd2l0aCBhIHBhdGNoIGJ5IEplZmYgSmFuZXMuIExhdGVyIGl0 IHdhcyByZXZpdmVkIGJ5IFBhdmFuIERlb2xhc2VlLiAgQWZ0ZXIgaXQgd2FzIHBpY2tlZCB1cCBi eSBJYnJhciBBaG1lZCBhbmQgZmluYWxseSwgaXQgd2FzIHJld3JpdHRlbiBieSBtZSwgc28gSSBt b3ZlZCBteXNlbGYgZnJvbSByZXZpZXdlcnMgdG8gYXV0aG9ycyBhcyB3ZWxsLg0KDQpUaGUgbGF0 ZXN0IHZlcnNpb24gd2FzIHJldmlld2VkIGFuZCB0ZXN0ZWQgYnkgSWJyYXIgQWhtZWQuIFRoZSBw YXRjaCBkb2Vzbid0IGFmZmVjdCBDT1BZIEZSRUVaRSBwZXJmb3JtYW5jZSBhbmQgc2lnbmlmaWNh bnRseSBkZWNyZWFzZXMgdGhlIHRpbWUgb2YgdGhlIGZvbGxvd2luZyBWQUNVVU0u