Return-Path: Delivered-To: apmail-hadoop-mapreduce-dev-archive@minotaur.apache.org Received: (qmail 35075 invoked from network); 28 Jun 2010 16:06:58 -0000 Received: from unknown (HELO mail.apache.org) (140.211.11.3) by 140.211.11.9 with SMTP; 28 Jun 2010 16:06:58 -0000 Received: (qmail 39745 invoked by uid 500); 28 Jun 2010 16:06:58 -0000 Delivered-To: apmail-hadoop-mapreduce-dev-archive@hadoop.apache.org Received: (qmail 39677 invoked by uid 500); 28 Jun 2010 16:06:57 -0000 Mailing-List: contact mapreduce-dev-help@hadoop.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: mapreduce-dev@hadoop.apache.org Delivered-To: mailing list mapreduce-dev@hadoop.apache.org Delivered-To: moderator for mapreduce-dev@hadoop.apache.org Received: (qmail 6291 invoked by uid 99); 28 Jun 2010 12:47:35 -0000 X-ASF-Spam-Status: No, hits=0.0 required=10.0 tests= X-Spam-Check-By: apache.org Received-SPF: unknown (nike.apache.org: error in processing during lookup of madeleine.piffaretti@etu.upmc.fr) X-Ids: courriel1 Message-ID: <20100628144544.rodoo9th2cssg0w4@webmail.etu.upmc.fr> Date: Mon, 28 Jun 2010 14:45:44 +0200 From: Madeleine PIFFARETTI To: mapreduce-dev@hadoop.apache.org Subject: Question about JobQueueTaskScheduler MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; DelSp="Yes"; format="flowed" Content-Disposition: inline Content-Transfer-Encoding: quoted-printable User-Agent: Internet Messaging Program (IMP) H3 (4.1.6) X-Virus-Checked: Checked by ClamAV on apache.org Hey! We are working on MapReduce of Hadoop and we wish to know why the =20 JobQueueTaskScheduler never assign more than 1 reduce task per =20 heartbeat? Regards, Jonathan Lejeune & Madeleine Piffaretti Universit=E9 Pierre et Marie Curie (Paris)