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 EB8B0DD53 for ; Thu, 14 Feb 2013 18:25:30 +0000 (UTC) Received: (qmail 55059 invoked by uid 500); 14 Feb 2013 18:25:26 -0000 Delivered-To: apmail-hadoop-user-archive@hadoop.apache.org Received: (qmail 54842 invoked by uid 500); 14 Feb 2013 18:25:25 -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 54835 invoked by uid 99); 14 Feb 2013 18:25:25 -0000 Received: from nike.apache.org (HELO nike.apache.org) (192.87.106.230) by apache.org (qpsmtpd/0.29) with ESMTP; Thu, 14 Feb 2013 18:25:25 +0000 X-ASF-Spam-Status: No, hits=-2.8 required=5.0 tests=HTML_MESSAGE,RCVD_IN_DNSWL_HI,SPF_PASS X-Spam-Check-By: apache.org Received-SPF: pass (nike.apache.org: local policy) Received: from [15.216.28.36] (HELO g1t0029.austin.hp.com) (15.216.28.36) by apache.org (qpsmtpd/0.29) with ESMTP; Thu, 14 Feb 2013 18:25:15 +0000 Received: from G4W6310.americas.hpqcorp.net (g4w6310.houston.hp.com [16.210.26.217]) (using TLSv1 with cipher AES128-SHA (128/128 bits)) (No client certificate requested) by g1t0029.austin.hp.com (Postfix) with ESMTPS id DEB99385FD for ; Thu, 14 Feb 2013 18:24:52 +0000 (UTC) Received: from G4W6304.americas.hpqcorp.net (16.210.26.229) by G4W6310.americas.hpqcorp.net (16.210.26.217) with Microsoft SMTP Server (TLS) id 14.2.328.9; Thu, 14 Feb 2013 18:23:34 +0000 Received: from G4W3205.americas.hpqcorp.net ([169.254.12.37]) by G4W6304.americas.hpqcorp.net ([16.210.26.229]) with mapi id 14.02.0328.009; Thu, 14 Feb 2013 18:23:34 +0000 From: "Henjarappa, Savitha" To: "user@hadoop.apache.org" Subject: How to identify datanodes in a cluster Thread-Topic: How to identify datanodes in a cluster Thread-Index: Ac4K4GM8r1st0znPSh6mCj0Qzvj2nA== Date: Thu, 14 Feb 2013 18:23:33 +0000 Message-ID: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [16.210.48.19] Content-Type: multipart/alternative; boundary="_000_BB35537A2409A340BFCAE5C47EAA8FA487F6FB27G4W3205americas_" MIME-Version: 1.0 X-Virus-Checked: Checked by ClamAV on apache.org --_000_BB35537A2409A340BFCAE5C47EAA8FA487F6FB27G4W3205americas_ Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable All, My questions - If I have multiple Hadoop clusters, how do I make put which DataNod= e is configured to which NameNode? Similary Task Tracker to JobTracker? - Can I install Map and Reduce on separate Nodes? Is there any usecas= e to support this configuration. Thanks, Savitha --_000_BB35537A2409A340BFCAE5C47EAA8FA487F6FB27G4W3205americas_ Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable
All,
 
My questions
  • If I have multiple Hadoop clusters, how do I make put which DataNode is= configured to which NameNode? Similary  Task Tracker to JobTracker?
  • Can I install Map and Reduce on separate Nodes? Is there any usecase= to support this configuration.
 
Thanks,
Savitha
 
 
 
 
 
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