Return-Path: Delivered-To: apmail-hadoop-common-user-archive@www.apache.org Received: (qmail 61517 invoked from network); 22 Feb 2010 19:37:22 -0000 Received: from hermes.apache.org (HELO mail.apache.org) (140.211.11.3) by minotaur.apache.org with SMTP; 22 Feb 2010 19:37:22 -0000 Received: (qmail 92493 invoked by uid 500); 22 Feb 2010 19:37:20 -0000 Delivered-To: apmail-hadoop-common-user-archive@hadoop.apache.org Received: (qmail 92425 invoked by uid 500); 22 Feb 2010 19:37:20 -0000 Mailing-List: contact common-user-help@hadoop.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: common-user@hadoop.apache.org Delivered-To: mailing list common-user@hadoop.apache.org Received: (qmail 92415 invoked by uid 99); 22 Feb 2010 19:37:20 -0000 Received: from nike.apache.org (HELO nike.apache.org) (192.87.106.230) by apache.org (qpsmtpd/0.29) with ESMTP; Mon, 22 Feb 2010 19:37:20 +0000 X-ASF-Spam-Status: No, hits=1.2 required=10.0 tests=SPF_NEUTRAL X-Spam-Check-By: apache.org Received-SPF: neutral (nike.apache.org: local policy) Received: from [209.85.216.198] (HELO mail-px0-f198.google.com) (209.85.216.198) by apache.org (qpsmtpd/0.29) with ESMTP; Mon, 22 Feb 2010 19:37:12 +0000 Received: by pxi36 with SMTP id 36so449679pxi.20 for ; Mon, 22 Feb 2010 11:36:50 -0800 (PST) MIME-Version: 1.0 Received: by 10.140.251.10 with SMTP id y10mr488623rvh.112.1266867410253; Mon, 22 Feb 2010 11:36:50 -0800 (PST) In-Reply-To: <5a921af21002212020u5677fd1tabc549322787c41f@mail.gmail.com> References: <5a921af21002212020u5677fd1tabc549322787c41f@mail.gmail.com> From: Todd Lipcon Date: Mon, 22 Feb 2010 11:36:30 -0800 Message-ID: <45f85f71002221136h64cb3772le89ff9dded58f6a2@mail.gmail.com> Subject: Re: Namenode data loss To: yangxiao9901@gmail.com, common-user@hadoop.apache.org Content-Type: text/plain; charset=ISO-8859-1 X-Virus-Checked: Checked by ClamAV on apache.org Hi Xiao, Are you sure that your secondary namenode was properly running before the dataloss event? Did you configure multiple dfs.name.dirs for your NN? -Todd P.S I moved this thread to common-user - probably a better place than -general. On Sun, Feb 21, 2010 at 8:20 PM, xiao yang wrote: > My namenode failed, and I can't find data back on this machine. > I have look into the data directory in secondary namenode, but the > "name" directory is empty. > What should I do? > > Thanks! > Xiao >