Return-Path: Delivered-To: apmail-hadoop-core-user-archive@www.apache.org Received: (qmail 65427 invoked from network); 8 May 2008 12:00:19 -0000 Received: from hermes.apache.org (HELO mail.apache.org) (140.211.11.2) by minotaur.apache.org with SMTP; 8 May 2008 12:00:19 -0000 Received: (qmail 90827 invoked by uid 500); 8 May 2008 12:00:18 -0000 Delivered-To: apmail-hadoop-core-user-archive@hadoop.apache.org Received: (qmail 90791 invoked by uid 500); 8 May 2008 12:00:18 -0000 Mailing-List: contact core-user-help@hadoop.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: core-user@hadoop.apache.org Delivered-To: mailing list core-user@hadoop.apache.org Received: (qmail 90779 invoked by uid 99); 8 May 2008 12:00:18 -0000 Received: from athena.apache.org (HELO athena.apache.org) (140.211.11.136) by apache.org (qpsmtpd/0.29) with ESMTP; Thu, 08 May 2008 05:00:18 -0700 X-ASF-Spam-Status: No, hits=1.2 required=10.0 tests=SPF_NEUTRAL X-Spam-Check-By: apache.org Received-SPF: neutral (athena.apache.org: local policy) Received: from [69.147.107.20] (HELO mrout1-b.corp.re1.yahoo.com) (69.147.107.20) by apache.org (qpsmtpd/0.29) with ESMTP; Thu, 08 May 2008 11:59:29 +0000 Received: from [10.66.75.37] (placesound-lr.eglbp.corp.yahoo.com [10.66.75.37]) by mrout1-b.corp.re1.yahoo.com (8.13.8/8.13.8/y.out) with ESMTP id m48BxQGQ082070 for ; Thu, 8 May 2008 04:59:27 -0700 (PDT) DomainKey-Signature: a=rsa-sha1; s=serpent; d=yahoo-inc.com; c=nofws; q=dns; h=message-id:date:from:user-agent:mime-version:to:subject: content-type:content-transfer-encoding; b=YkG2FM42U+Cbox7l884UGoaFiFtMp0ESLq0UQL2sv5QNNyhdMVpi54U06myGcH/R Message-ID: <4822EB1D.8040003@yahoo-inc.com> Date: Thu, 08 May 2008 17:29:25 +0530 From: deepak User-Agent: Thunderbird 2.0.0.14 (X11/20080421) MIME-Version: 1.0 To: core-user@hadoop.apache.org Subject: How to track alive tasktrackers from master Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Virus-Checked: Checked by ClamAV on apache.org Hi, I'm pretty new to hadoop. Wanted to know if there's some option in hadoop to get status details of the tasktrackers ( on slaves ) from master. like: hadoop dfsadim -report This gives me details of the slaves only. is there any such command to know whether all tasktrackers are alive. Thanks, Deepak