From user-return-26615-apmail-cassandra-user-archive=cassandra.apache.org@cassandra.apache.org Sun Jun 3 00:53:49 2012 Return-Path: X-Original-To: apmail-cassandra-user-archive@www.apache.org Delivered-To: apmail-cassandra-user-archive@www.apache.org Received: from mail.apache.org (hermes.apache.org [140.211.11.3]) by minotaur.apache.org (Postfix) with SMTP id D738A989C for ; Sun, 3 Jun 2012 00:53:48 +0000 (UTC) Received: (qmail 68901 invoked by uid 500); 3 Jun 2012 00:53:46 -0000 Delivered-To: apmail-cassandra-user-archive@cassandra.apache.org Received: (qmail 68878 invoked by uid 500); 3 Jun 2012 00:53:46 -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 68868 invoked by uid 99); 3 Jun 2012 00:53:46 -0000 Received: from athena.apache.org (HELO athena.apache.org) (140.211.11.136) by apache.org (qpsmtpd/0.29) with ESMTP; Sun, 03 Jun 2012 00:53:46 +0000 X-ASF-Spam-Status: No, hits=-2.8 required=5.0 tests=HTML_MESSAGE,RCVD_IN_DNSWL_HI,SPF_PASS X-Spam-Check-By: apache.org Received-SPF: pass (athena.apache.org: domain of prvs=494953892=bburruss@expedia.com designates 216.251.112.221 as permitted sender) Received: from [216.251.112.221] (HELO mx1a.expedia.com) (216.251.112.221) by apache.org (qpsmtpd/0.29) with ESMTP; Sun, 03 Jun 2012 00:53:41 +0000 X-SRBS: None X-HAT: Sender Group RELAYLIST, Policy $RELAYED applied. Received: from unknown (HELO CHC-EXCHNA02.SEA.CORP.EXPECN.COM) ([10.184.69.26]) by mx1a.sea.corp.expecn.com with ESMTP; 02 Jun 2012 17:53:20 -0700 Received: from CHC-CCR02.SEA.CORP.EXPECN.COM ([10.184.69.23]) by CHC-EXCHNA02.SEA.CORP.EXPECN.COM ([10.184.69.26]) with mapi; Sat, 2 Jun 2012 17:53:20 -0700 From: Todd Burruss To: "user@cassandra.apache.org" Date: Sat, 2 Jun 2012 17:53:47 -0700 Subject: batch isolation Thread-Topic: batch isolation Thread-Index: Ac1BI0TlVNBNwRjQSQ+ZHz0vBXhxJw== Message-ID: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: user-agent: Microsoft-MacOutlook/14.2.2.120421 acceptlanguage: en-US Content-Type: multipart/alternative; boundary="_000_CBF003AB798Ebburrussexpediacom_" MIME-Version: 1.0 X-Virus-Checked: Checked by ClamAV on apache.org --_000_CBF003AB798Ebburrussexpediacom_ Content-Type: text/plain; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable reading the 1.1 "what's new" here, http://www.datastax.com/docs/1.1/getting= _started/new_features, I'm wondering about row level isolation. two questions: 1 =96 does this mean that a batch_mutate that first sends a "row delete" mu= tation on key X, then subsequent insert mutations for key X is isolated? 2 =96 does isolation span column families for the same key within the same= batch_mutate? --_000_CBF003AB798Ebburrussexpediacom_ Content-Type: text/html; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable
reading the 1.1 "what's ne= w" here, http://www.datastax.com/docs/1.1/getting_started/new_feat= ures, I'm wondering about row level isolation.

two questions:

1 =96 does this mean that a batch_= mutate that first sends a "row delete" mutation on key X, then su= bsequent insert mutations for key X is isolated?  

2 =96 does isolation span column families for the same key  with= in the same batch_mutate?
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