Return-Path: X-Original-To: apmail-hadoop-user-archive@minotaur.apache.org Delivered-To: apmail-hadoop-user-archive@minotaur.apache.org Received: from mail.apache.org (hermes.apache.org [140.211.11.3]) by minotaur.apache.org (Postfix) with SMTP id 61B4CD296 for ; Thu, 25 Oct 2012 08:28:26 +0000 (UTC) Received: (qmail 74502 invoked by uid 500); 25 Oct 2012 08:28:19 -0000 Delivered-To: apmail-hadoop-user-archive@hadoop.apache.org Received: (qmail 74366 invoked by uid 500); 25 Oct 2012 08:28:19 -0000 Mailing-List: contact user-help@hadoop.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: user@hadoop.apache.org Delivered-To: mailing list user@hadoop.apache.org Received: (qmail 74353 invoked by uid 99); 25 Oct 2012 08:28:19 -0000 Received: from nike.apache.org (HELO nike.apache.org) (192.87.106.230) by apache.org (qpsmtpd/0.29) with ESMTP; Thu, 25 Oct 2012 08:28:19 +0000 X-ASF-Spam-Status: No, hits=1.7 required=5.0 tests=FREEMAIL_ENVFROM_END_DIGIT,HTML_MESSAGE,RCVD_IN_DNSWL_LOW,SPF_PASS X-Spam-Check-By: apache.org Received-SPF: pass (nike.apache.org: domain of liulei412@gmail.com designates 209.85.212.176 as permitted sender) Received: from [209.85.212.176] (HELO mail-wi0-f176.google.com) (209.85.212.176) by apache.org (qpsmtpd/0.29) with ESMTP; Thu, 25 Oct 2012 08:28:11 +0000 Received: by mail-wi0-f176.google.com with SMTP id hn14so4764875wib.11 for ; Thu, 25 Oct 2012 01:27:51 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:date:message-id:subject:from:to:content-type; bh=9TiXflgrnfyFY5ii+1OBlPsngIoZ0wKvV4a6K9Usy2k=; b=dCcEMKo6Y/3dDHTUFOkPBa2UqSlN/TJExhjM2hIAr/BHAT1R84syubq/2ws3GQv2yE Via7+5Pxm3uQHXusgTOr26IIrhAeeR7lh4MvqjfXpdNkhEZ1rfbENEev/RkiEw5PYynb YOyT7MP4HgN4E1SfEjO3nEWg3PFtYMSxsFHFz/0cfATObNjERJr3QUHWZIimwdwrdyoP pxhuVOl5O3J8/GY5fLUDbubnqfB0tKnZ6dEzjMnMqzFPvMczJndwkFfK4QSr5o4H91sU NAHxOCdgy+yrHDgGL8R75z2NT+IZo1zDr4o0oOg3hsz90/gJ4W7yDBoIaLkJO/Vrew/t ew5Q== MIME-Version: 1.0 Received: by 10.216.50.200 with SMTP id z50mr11603302web.9.1351153671023; Thu, 25 Oct 2012 01:27:51 -0700 (PDT) Received: by 10.216.106.67 with HTTP; Thu, 25 Oct 2012 01:27:50 -0700 (PDT) Date: Thu, 25 Oct 2012 16:27:50 +0800 Message-ID: Subject: HDFS HA IO Fencing From: lei liu To: user@hadoop.apache.org Content-Type: multipart/alternative; boundary=0016e6dcd0fb992d4a04ccddfa7e X-Virus-Checked: Checked by ClamAV on apache.org --0016e6dcd0fb992d4a04ccddfa7e Content-Type: text/plain; charset=ISO-8859-1 I want to use HDFS HA function, I find the IO Fencing function is complex in hadoop2.0. I think we can use file lock to implement the IO Fencing function, I think that is simple. Thanks, LiuLei --0016e6dcd0fb992d4a04ccddfa7e Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable I want to use HDFS HA function, I find the=A0 IO Fencing function is=A0 com= plex in hadoop2.0. I think we can use=A0 file lock to implement the=A0 IO = Fencing function, I think that is simple.

Thanks,

LiuLei
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