Return-Path: Delivered-To: apmail-hadoop-core-dev-archive@www.apache.org Received: (qmail 57424 invoked from network); 30 Jun 2008 20:48:16 -0000 Received: from hermes.apache.org (HELO mail.apache.org) (140.211.11.2) by minotaur.apache.org with SMTP; 30 Jun 2008 20:48:16 -0000 Received: (qmail 42884 invoked by uid 500); 30 Jun 2008 20:48:16 -0000 Delivered-To: apmail-hadoop-core-dev-archive@hadoop.apache.org Received: (qmail 42858 invoked by uid 500); 30 Jun 2008 20:48:16 -0000 Mailing-List: contact core-dev-help@hadoop.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: core-dev@hadoop.apache.org Delivered-To: mailing list core-dev@hadoop.apache.org Received: (qmail 42847 invoked by uid 99); 30 Jun 2008 20:48:16 -0000 Received: from athena.apache.org (HELO athena.apache.org) (140.211.11.136) by apache.org (qpsmtpd/0.29) with ESMTP; Mon, 30 Jun 2008 13:48:16 -0700 X-ASF-Spam-Status: No, hits=-0.0 required=10.0 tests=SPF_PASS X-Spam-Check-By: apache.org Received-SPF: pass (athena.apache.org: domain of cutting@gmail.com designates 209.85.200.172 as permitted sender) Received: from [209.85.200.172] (HELO wf-out-1314.google.com) (209.85.200.172) by apache.org (qpsmtpd/0.29) with ESMTP; Mon, 30 Jun 2008 20:47:25 +0000 Received: by wf-out-1314.google.com with SMTP id 24so1784380wfg.2 for ; Mon, 30 Jun 2008 13:47:45 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:message-id:date:from :user-agent:mime-version:to:subject:references:in-reply-to :content-type:content-transfer-encoding:sender; bh=1yt3FtN1eBPDlWGgEUj82T608nPtraavbIYxDCncnGQ=; b=XjPPq9Vt0KYdmK8X3Cn8QmStmP4njvjT/DLKtUTqES23imHOTdpIqMGyJ3C0RbX+gj zwLfd+YfcjNNVQp5iWoL8fIaregtKtMfQW/tSNcREWnnQ/W6R27H1uNVQB3NuouWxfSE eWtehT3MVLqkzZMVSs7C9HcCPcTreJnKj1g5A= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:user-agent:mime-version:to:subject:references :in-reply-to:content-type:content-transfer-encoding:sender; b=gptVGESf7EuPVrz4X+3OFqCgaQ28zyKfX9+rNNZxhGsiuN0qFDLMIa5UMLULH9Jxfm pUE0vpoflzZ6izpu6pleGmD0cu7XIvZ57yM27kmAThQJPvn2vhADB/08Y6XzSpGnOhzd beKMHKzumflE9wRg49NlX4dQjzZ7dHDy7iseQ= Received: by 10.142.217.17 with SMTP id p17mr2100114wfg.23.1214858865392; Mon, 30 Jun 2008 13:47:45 -0700 (PDT) Received: from ?192.168.168.106? ( [76.103.181.218]) by mx.google.com with ESMTPS id 20sm12896251wfi.11.2008.06.30.13.46.50 (version=TLSv1/SSLv3 cipher=RC4-MD5); Mon, 30 Jun 2008 13:47:33 -0700 (PDT) Message-ID: <48694639.1090507@apache.org> Date: Mon, 30 Jun 2008 13:46:49 -0700 From: Doug Cutting User-Agent: Thunderbird 2.0.0.14 (X11/20080505) MIME-Version: 1.0 To: core-dev@hadoop.apache.org Subject: Re: porting HDFS to Zookeeper?? References: <811fc3830806301336r393d3b61k3f9e43b5ef7909fd@mail.gmail.com> In-Reply-To: <811fc3830806301336r393d3b61k3f9e43b5ef7909fd@mail.gmail.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: Doug Cutting X-Virus-Checked: Checked by ClamAV on apache.org Sangmin Lee wrote: > I heard that there was a plans to porting HDFS to Zookeeper to get a high > availability. > Is this true? > If so, could anyone let me know about the status of this effort? I have heard folks talk of this, but have heard of no concrete plans yet. The radical approach would be to replace the namenode entirely with Zookeeper. Doug