Return-Path: Delivered-To: apmail-hadoop-zookeeper-user-archive@minotaur.apache.org Received: (qmail 71957 invoked from network); 20 Jan 2010 08:16:11 -0000 Received: from hermes.apache.org (HELO mail.apache.org) (140.211.11.3) by minotaur.apache.org with SMTP; 20 Jan 2010 08:16:11 -0000 Received: (qmail 84806 invoked by uid 500); 20 Jan 2010 08:16:11 -0000 Delivered-To: apmail-hadoop-zookeeper-user-archive@hadoop.apache.org Received: (qmail 84773 invoked by uid 500); 20 Jan 2010 08:16:11 -0000 Mailing-List: contact zookeeper-user-help@hadoop.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: zookeeper-user@hadoop.apache.org Delivered-To: mailing list zookeeper-user@hadoop.apache.org Received: (qmail 84763 invoked by uid 99); 20 Jan 2010 08:16:11 -0000 Received: from nike.apache.org (HELO nike.apache.org) (192.87.106.230) by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 20 Jan 2010 08:16:11 +0000 X-ASF-Spam-Status: No, hits=2.2 required=10.0 tests=HTML_MESSAGE,SPF_PASS X-Spam-Check-By: apache.org Received-SPF: pass (nike.apache.org: domain of xeoshow@gmail.com designates 209.85.221.179 as permitted sender) Received: from [209.85.221.179] (HELO mail-qy0-f179.google.com) (209.85.221.179) by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 20 Jan 2010 08:16:02 +0000 Received: by qyk9 with SMTP id 9so2846443qyk.30 for ; Wed, 20 Jan 2010 00:15:41 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:in-reply-to:references :date:message-id:subject:from:to:content-type; bh=WEO9alB5VKuPTcCQQAv4XjwfqKRHNwMos5NGprwFJUY=; b=cmQpJ6kKiTHFW/ESseltwuemki3nciq9OKMhj00cTlXGPXJw8c6hj5bdb4gNivkwKY aWDXNaHyFFMpVEMrkevZI/n1RS/MqOWs5Tr9v/+AH7p0bPElGNbfyUuU+ritNBhYdDim 1fU8cr7gh8eIUBUD7p9Hrv7LUJCthDaNVS63E= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type; b=SVsoTdJgUGZBGYUuWb9FVYazY3tJX5F1V1smoP+jL5UAKhMY+fXfSNUQ5fpMISE2FB OI0tXMSjBsM4RQt7ZZUOf9V5XPexSLSWu78eDbqbYER8Ae66cs1gcgdoch+R1/Gm8LVn NdNz02g/etc4PShQy6rE6ZfW4QZWaJUvLIGw0= MIME-Version: 1.0 Received: by 10.220.121.155 with SMTP id h27mr256321vcr.80.1263975340993; Wed, 20 Jan 2010 00:15:40 -0800 (PST) In-Reply-To: References: <65b85c501001192330q616340c1h4cd29257fdd0caf0@mail.gmail.com> Date: Wed, 20 Jan 2010 16:15:40 +0800 Message-ID: <65b85c501001200015k1a0dc66fve0e9dff999bfa910@mail.gmail.com> Subject: Re: Can zookeeper achive the IBM TSA function? From: xeoshow To: zookeeper-user@hadoop.apache.org Content-Type: multipart/alternative; boundary=001636c93192346ef9047d94312a X-Virus-Checked: Checked by ClamAV on apache.org --001636c93192346ef9047d94312a Content-Type: text/plain; charset=ISO-8859-1 Ted, thank you very much for your reply. I think A will exit and so ZK can help .. Not sure if any further link can help on how to program for such scenario... :-) 2010/1/20 Ted Dunning > yes. > > But there is some danger that A will maintain a connection to ZK and thus > retain the master status without being able to act as such. > > If you can guarantee that A will exit or go catatonic if it is unable to > continue, then ZK should solve your problem. This failure scenario is > common, but with a database, I would wonder if there are others. > > On Tue, Jan 19, 2010 at 11:30 PM, xeoshow wrote: > > > I am wondering can this monitor part be replaced by zookeeper, using > > zookeeper watch or something else? > > > > > > -- > Ted Dunning, CTO > DeepDyve > --001636c93192346ef9047d94312a--