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 1kznUz-00075x-4K for pgsql-hackers@arkaria.postgresql.org; Wed, 13 Jan 2021 21:16:13 +0000 Received: from localhost ([127.0.0.1] helo=malur.postgresql.org) by malur.postgresql.org with esmtp (Exim 4.92) (envelope-from ) id 1kznUy-000167-2f for pgsql-hackers@arkaria.postgresql.org; Wed, 13 Jan 2021 21:16:12 +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 1kznUx-00015z-SN for pgsql-hackers@lists.postgresql.org; Wed, 13 Jan 2021 21:16:11 +0000 Received: from wout2-smtp.messagingengine.com ([64.147.123.25]) by makus.postgresql.org with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1kznUv-0006DL-Sc for pgsql-hackers@lists.postgresql.org; Wed, 13 Jan 2021 21:16:10 +0000 Received: from compute2.internal (compute2.nyi.internal [10.202.2.42]) by mailout.west.internal (Postfix) with ESMTP id 507D98B9; Wed, 13 Jan 2021 16:16:08 -0500 (EST) Received: from mailfrontend1 ([10.202.2.162]) by compute2.internal (MEProxy); Wed, 13 Jan 2021 16:16:08 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:content-transfer-encoding:content-type :date:from:in-reply-to:message-id:mime-version:subject:to :x-me-proxy:x-me-proxy:x-me-sender:x-me-sender:x-sasl-enc; s= fm1; bh=+yLZE4Xrn/QBuomdYHg68YRL5gRdymysjZ++DQQ6yoE=; b=dRVfYmZ+ y6Yi9v7kHICUJWawGwh0YyXZpWtQyh8ODrKN5L7KJzFU699Rh1vPIM1pJORWP/48 5CmD2dwEngtkJT7csiE0TcEfS4thsU3M6pz5D/QwXLqDQCCL3oQvXrlm3NWb+dz3 EDnX4wF4JdjZKqJGSLbQg5aLmE8/mjo13INOdtdlc9816bgS4Ash2SfTQV+x9lCN AR1UakitvM3BZ/qoUEMxEGdINRZclaBQPgZR/gFTyTym4kQGMMk5DubOFTxdbxvq yUmXaQowPFKzPfkvBpucnn/1sRr8wRCQT4/4EO5dUZvbTanH/WOr5hyQyrm/Do+Y TVBj6CHSBSmH/w== X-ME-Sender: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgedukedrtdefgddugeeiucetufdoteggodetrfdotf fvucfrrhhofhhilhgvmecuhfgrshhtofgrihhlpdfqfgfvpdfurfetoffkrfgpnffqhgen uceurghilhhouhhtmecufedttdenucesvcftvggtihhpihgvnhhtshculddquddttddmne cujfgurhepfffhvffukfggtggugfgjfgesthekredttderudenucfhrhhomheptehlvhgr rhhoucfjvghrrhgvrhgruceorghlvhhhvghrrhgvsegrlhhvhhdrnhhoqdhiphdrohhrgh eqnecuggftrfgrthhtvghrnhepueffhfejieeuueffgedvudekgeeltdeviedvieeufeei ieevgfetheeufeethedvnecukfhppeduledtrdelhedrudelrddujeejnecuvehluhhsth gvrhfuihiivgepudenucfrrghrrghmpehmrghilhhfrhhomheprghlvhhhvghrrhgvsegr lhhvhhdrnhhoqdhiphdrohhrgh X-ME-Proxy: Received: from perhan.alvh.no-ip.org (unknown [190.95.19.177]) by mail.messagingengine.com (Postfix) with ESMTPA id C00F3240067; Wed, 13 Jan 2021 16:16:06 -0500 (EST) Received: by perhan.alvh.no-ip.org (Postfix, from userid 1000) id 28A342A0FC3; Wed, 13 Jan 2021 18:16:04 -0300 (-03) Date: Wed, 13 Jan 2021 18:16:04 -0300 From: Alvaro Herrera To: James Coleman Cc: Michael Paquier , David Johnston , PostgreSQL Developers , Andres Freund Subject: Re: [DOC] Document concurrent index builds waiting on each other Message-ID: <20210113211604.GA16584@alvherre.pgsql> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: User-Agent: Mutt/1.10.1 (2018-07-13) List-Id: List-Help: List-Subscribe: List-Post: List-Owner: List-Archive: Precedence: bulk On 2021-Jan-13, James Coleman wrote: > On Wed, Jan 13, 2021 at 4:05 PM Alvaro Herrera wrote: > > > > On 2021-Jan-13, James Coleman wrote: > > > > > On Wed, Jan 13, 2021 at 12:33 PM Alvaro Herrera wrote: > > > > > > This is true. So I propose > > > > > > > > Like any long-running transaction, REINDEX can > > > > affect which tuples can be removed by concurrent VACUUM > > > > on any table. > > > > > > That sounds good to me. > > > > Great, pushed with one more wording tweak: "REINDEX on any table can > > affect ... on any other table". To pg12 and up. > > Looks like what got committed is "REINDEX on a table" not "on any", > but I'm not sure that matters too much. Ouch. The difference seems slight enough that it doesn't matter; is it ungrammatical? Either way I'm gonna close this CF entry now, finally. Thank you for your patience! -- Álvaro Herrera Valdivia, Chile "I can't go to a restaurant and order food because I keep looking at the fonts on the menu. Five minutes later I realize that it's also talking about food" (Donald Knuth)