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 339F6D668 for ; Wed, 17 Oct 2012 11:32:43 +0000 (UTC) Received: (qmail 79659 invoked by uid 500); 17 Oct 2012 11:32:37 -0000 Delivered-To: apmail-hadoop-user-archive@hadoop.apache.org Received: (qmail 79410 invoked by uid 500); 17 Oct 2012 11:32:31 -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 79385 invoked by uid 99); 17 Oct 2012 11:32:31 -0000 Received: from nike.apache.org (HELO nike.apache.org) (192.87.106.230) by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 17 Oct 2012 11:32:31 +0000 X-ASF-Spam-Status: No, hits=-0.1 required=5.0 tests=HTML_MESSAGE,RCVD_IN_DNSWL_MED,SPF_PASS X-Spam-Check-By: apache.org Received-SPF: pass (nike.apache.org: domain of amits@infolinks.com designates 207.126.144.121 as permitted sender) Received: from [207.126.144.121] (HELO eu1sys200aog106.obsmtp.com) (207.126.144.121) by apache.org (qpsmtpd/0.29) with SMTP; Wed, 17 Oct 2012 11:32:21 +0000 Received: from mail-ie0-f198.google.com ([209.85.223.198]) (using TLSv1) by eu1sys200aob106.postini.com ([207.126.147.11]) with SMTP ID DSNKUH6XMMJMpZPjgNJrgOrEpYfNZJz7a2GK@postini.com; Wed, 17 Oct 2012 11:32:01 UTC Received: by mail-ie0-f198.google.com with SMTP id 17so16630862iea.5 for ; Wed, 17 Oct 2012 04:31:59 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20120113; h=mime-version:date:message-id:subject:from:to:content-type :x-gm-message-state; bh=zVpWsV6k88wx1mmkt/X0znIHTYESc7upOkhGLOIYlws=; b=JN077RSsNz8USA8Ar9tROqJ7ZtRsg2OZd49Nyiat4oLnB71UXdmflsAI/bhCEzzKuP h89ncO5vs5fshAOkWaMRuydzw+SwkxiSYlijOJToASIeIh0WeHFgwX0+2/FThlhPt+gP kEBdqtualNFhvSKT6EnpqdejHzhu94Wd4crjP//4swVrDKYmqTTBKlV3rwLlyXt3Q7Yr mMIhNNr11elI/A7A0q5VG0JjTcoOafIExZMV1FBz38gFoAjMRj2/hhBcG1zonwUUsuCn //csPoV2WqiNLuRQRel/MxA78BDDZPbhTHXBML+UbY2SX6x4TCFKM2nPkdvhaNFvC0dz jzBQ== Received: by 10.50.236.6 with SMTP id uq6mr1196254igc.50.1350473519581; Wed, 17 Oct 2012 04:31:59 -0700 (PDT) MIME-Version: 1.0 Received: by 10.50.236.6 with SMTP id uq6mr1196242igc.50.1350473519430; Wed, 17 Oct 2012 04:31:59 -0700 (PDT) Received: by 10.231.239.134 with HTTP; Wed, 17 Oct 2012 04:31:59 -0700 (PDT) Date: Wed, 17 Oct 2012 13:31:59 +0200 Message-ID: Subject: HDFS upgrade From: Amit Sela To: user@hadoop.apache.org Content-Type: multipart/alternative; boundary=14dae9340599677de004cc3f9eaa X-Gm-Message-State: ALoCoQkFgyjcmifg1XMkys5TYKqn5LdGwXTcRel7KMZ5EPbwd5HSEopaDH+RZ/l/jM7bRLTPwUESS04axFFWvoMyNh+MtoXBFCpJos47qYNc7rTwVjX7ZuN8MQZAEnu+Ujsa+uHCDuz/af+lEfItQBvSg2O7LSBv5lxgMe+bQuTEL6NlljkkzIA= X-Virus-Checked: Checked by ClamAV on apache.org --14dae9340599677de004cc3f9eaa Content-Type: text/plain; charset=ISO-8859-1 Hi all, I want to upgrade a 1TB cluster from hadoop 0.20.3 to hadoop 1.0.3. I am interested to know how long does the hdfs upgrade take and in general how long it takes from deploying new versions until the cluster is back to running heavy MapReduce ? I'd also appreciate it if someone could elaborate about how the hdfs file system is actually executed - I read in the book tat data is not replicated but the DNs use hard links. Thanks, --14dae9340599677de004cc3f9eaa Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable
Hi all,=A0
I want to upgrade a 1TB clu= ster from hadoop 0.20.3 to hadoop 1.0.3.

I am interested to know how= long does the hdfs upgrade take and in general how long it takes from depl= oying new versions until the cluster is back to running heavy MapReduce ?

I'd also=A0appreciate it if someone could elaborate about how the hdfs = file system is actually executed - I read in the book tat data is not repli= cated but the DNs use hard links.
Thanks,=A0
--14dae9340599677de004cc3f9eaa--