From hadoop-dev-return-1150-apmail-lucene-hadoop-dev-archive=lucene.apache.org@lucene.apache.org Mon May 01 20:23:41 2006 Return-Path: Delivered-To: apmail-lucene-hadoop-dev-archive@locus.apache.org Received: (qmail 20243 invoked from network); 1 May 2006 20:23:34 -0000 Received: from hermes.apache.org (HELO mail.apache.org) (209.237.227.199) by minotaur.apache.org with SMTP; 1 May 2006 20:23:25 -0000 Received: (qmail 69007 invoked by uid 500); 1 May 2006 20:23:20 -0000 Delivered-To: apmail-lucene-hadoop-dev-archive@lucene.apache.org Received: (qmail 68979 invoked by uid 500); 1 May 2006 20:23:19 -0000 Mailing-List: contact hadoop-dev-help@lucene.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: hadoop-dev@lucene.apache.org Delivered-To: mailing list hadoop-dev@lucene.apache.org Received: (qmail 68970 invoked by uid 99); 1 May 2006 20:23:19 -0000 Received: from asf.osuosl.org (HELO asf.osuosl.org) (140.211.166.49) by apache.org (qpsmtpd/0.29) with ESMTP; Mon, 01 May 2006 13:23:19 -0700 X-ASF-Spam-Status: No, hits=0.0 required=10.0 tests= X-Spam-Check-By: apache.org Received: from [209.237.227.198] (HELO brutus.apache.org) (209.237.227.198) by apache.org (qpsmtpd/0.29) with ESMTP; Mon, 01 May 2006 13:23:18 -0700 Received: from brutus (localhost [127.0.0.1]) by brutus.apache.org (Postfix) with ESMTP id CC5FB7142AD for ; Mon, 1 May 2006 20:22:48 +0000 (GMT) Message-ID: <3465311.1146514968834.JavaMail.jira@brutus> Date: Mon, 1 May 2006 20:22:48 +0000 (GMT+00:00) From: "Sameer Paranjpye (JIRA)" To: hadoop-dev@lucene.apache.org Subject: [jira] Updated: (HADOOP-99) task trackers can only be assigned one task every heartbeat In-Reply-To: <1017503414.1143102720520.JavaMail.jira@ajax> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-Virus-Checked: Checked by ClamAV on apache.org X-Spam-Rating: minotaur.apache.org 1.6.2 0/1000/N [ http://issues.apache.org/jira/browse/HADOOP-99?page=all ] Sameer Paranjpye updated HADOOP-99: ----------------------------------- Fix Version: 0.3 Assign To: Owen O'Malley > task trackers can only be assigned one task every heartbeat > ----------------------------------------------------------- > > Key: HADOOP-99 > URL: http://issues.apache.org/jira/browse/HADOOP-99 > Project: Hadoop > Type: Bug > Components: mapred > Versions: 0.1.0 > Reporter: Owen O'Malley > Assignee: Owen O'Malley > Fix For: 0.3 > > Task trackers only call pollForNewTask once per a heartbeat (10 seconds) rather than when a task finishes. Especially for quick maps this means that the cluster is under utilized, because each map finishes in a cycle and the task tracker never gets a second, third or fourth task to run. -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://issues.apache.org/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira