Return-Path: Delivered-To: apmail-cassandra-user-archive@www.apache.org Received: (qmail 15189 invoked from network); 18 Feb 2011 17:53:57 -0000 Received: from hermes.apache.org (HELO mail.apache.org) (140.211.11.3) by minotaur.apache.org with SMTP; 18 Feb 2011 17:53:57 -0000 Received: (qmail 96728 invoked by uid 500); 18 Feb 2011 17:53:55 -0000 Delivered-To: apmail-cassandra-user-archive@cassandra.apache.org Received: (qmail 96295 invoked by uid 500); 18 Feb 2011 17:53:51 -0000 Mailing-List: contact user-help@cassandra.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: user@cassandra.apache.org Delivered-To: mailing list user@cassandra.apache.org Received: (qmail 96274 invoked by uid 500); 18 Feb 2011 17:53:50 -0000 Delivered-To: apmail-incubator-cassandra-user@incubator.apache.org Received: (qmail 96270 invoked by uid 99); 18 Feb 2011 17:53:49 -0000 Received: from athena.apache.org (HELO athena.apache.org) (140.211.11.136) by apache.org (qpsmtpd/0.29) with ESMTP; Fri, 18 Feb 2011 17:53:49 +0000 X-ASF-Spam-Status: No, hits=2.0 required=5.0 tests=FREEMAIL_FROM,SPF_NEUTRAL,T_TO_NO_BRKTS_FREEMAIL,URI_HEX X-Spam-Check-By: apache.org Received-SPF: neutral (athena.apache.org: 216.139.236.26 is neither permitted nor denied by domain of mohitanchlia@gmail.com) Received: from [216.139.236.26] (HELO sam.nabble.com) (216.139.236.26) by apache.org (qpsmtpd/0.29) with ESMTP; Fri, 18 Feb 2011 17:53:44 +0000 Received: from jim.nabble.com ([192.168.236.80]) by sam.nabble.com with esmtp (Exim 4.69) (envelope-from ) id 1PqUWB-0006sE-SW for cassandra-user@incubator.apache.org; Fri, 18 Feb 2011 09:53:23 -0800 Date: Fri, 18 Feb 2011 09:53:23 -0800 (PST) From: mcasandra To: cassandra-user@incubator.apache.org Message-ID: <1298051603878-6040893.post@n2.nabble.com> In-Reply-To: References: <1297991508656-6038330.post@n2.nabble.com> <9f715825-f9bd-6734-fe87-9494463f27c0@me.com> Subject: Re: Understand eventually consistent MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit I have couple of more quesitons: 1. What happens when RF = 3, R = 2 and W = 2 and 2 machines go down? Would read and write fail or get the results from that one machine that is up? 2. Someone in this thread mentioned that write is eventually consistent. Is it because response is returned to the client as soon as data is written to commit log. But isn't this same as other RDBMS? Oracle does the same thing it writes to REDO log and somepoint later does a checkpoint and flushes data to disk. But RDBMS is not called eventually consistent. -- View this message in context: http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/Understand-eventually-consistent-tp6038330p6040893.html Sent from the cassandra-user@incubator.apache.org mailing list archive at Nabble.com.