Return-Path: X-Original-To: apmail-hbase-dev-archive@www.apache.org Delivered-To: apmail-hbase-dev-archive@www.apache.org Received: from mail.apache.org (hermes.apache.org [140.211.11.3]) by minotaur.apache.org (Postfix) with SMTP id 2A5A19513 for ; Fri, 4 Nov 2011 19:54:08 +0000 (UTC) Received: (qmail 14560 invoked by uid 500); 4 Nov 2011 19:54:07 -0000 Delivered-To: apmail-hbase-dev-archive@hbase.apache.org Received: (qmail 14521 invoked by uid 500); 4 Nov 2011 19:54:07 -0000 Mailing-List: contact dev-help@hbase.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: dev@hbase.apache.org Delivered-To: mailing list dev@hbase.apache.org Received: (qmail 14512 invoked by uid 99); 4 Nov 2011 19:54:07 -0000 Received: from athena.apache.org (HELO athena.apache.org) (140.211.11.136) by apache.org (qpsmtpd/0.29) with ESMTP; Fri, 04 Nov 2011 19:54:07 +0000 X-ASF-Spam-Status: No, hits=-0.7 required=5.0 tests=FREEMAIL_FROM,RCVD_IN_DNSWL_LOW,SPF_PASS X-Spam-Check-By: apache.org Received-SPF: pass (athena.apache.org: domain of ghelmling@gmail.com designates 74.125.82.51 as permitted sender) Received: from [74.125.82.51] (HELO mail-ww0-f51.google.com) (74.125.82.51) by apache.org (qpsmtpd/0.29) with ESMTP; Fri, 04 Nov 2011 19:54:03 +0000 Received: by wwf27 with SMTP id 27so2995985wwf.20 for ; Fri, 04 Nov 2011 12:53:41 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type:content-transfer-encoding; bh=fj1HwgACg5FiijEGbdMvpS5rMWHm/C81BCg0MTR6ULg=; b=qWz7A4AhJc9BlpwW2cghzpee525T/4qREqqp4Ne3SSG2W0es+03Xv3bbbB/6hdhiCr HfZATq1rtEpNSdjjDSn+OCHaz+4zPAqNGjHqmvYcb1Ub6naQvT88DQj/LcqAJU+Cd6ds 5XNllu+1JgDvCQBbRVjHz5HN1FBULDu0Xzqcg= MIME-Version: 1.0 Received: by 10.216.229.93 with SMTP id g71mr1060693weq.44.1320436421523; Fri, 04 Nov 2011 12:53:41 -0700 (PDT) Received: by 10.216.39.72 with HTTP; Fri, 4 Nov 2011 12:53:41 -0700 (PDT) In-Reply-To: References: <4A450311-E043-4673-9C49-D3433FC24488@yahoo-inc.com> Date: Fri, 4 Nov 2011 12:53:41 -0700 Message-ID: Subject: Re: Omid: Transactional Support for HBase From: Gary Helmling To: dev@hbase.apache.org Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Hi Daniel, Cool stuff. You might want to link your project on the "supporting projects" wiki page as well: http://wiki.apache.org/hadoop/SupportingProjects Can't guarantee it'll drive a lot of traffic, but it's a good reference point for new users looking for options. --gh On Fri, Nov 4, 2011 at 11:25 AM, Stack wrote: > 2011/11/4 Daniel G=F3mez Ferro : >> Hi all, >> >> It is my pleasure to announce the open source release of Omid, a project= whose goal is to add lock-free transactional support on top of HBase. The = current release includes CrSO, a client-replicated status oracle that detec= ts the write-write conflicts to provide Snapshot Isolation. CrSO has the fo= llowing appealing properties: >> > > Nice addition Daniel. =A0Thank you for posting the list (FYI, slaves in > HBase are called RegionServers not DataNodes -- you might want to > update your graphic). =A0What does CrSo stand for? =A0 =A0If it fails, al= l > transactions just abort -- the clients will time them out? (Thats not > bad I'd say). =A0 Thanks for doing the comparison to hbase-trx. =A0That > helps. > > Good stuff Daniel, > St.Ack >