Return-Path: Delivered-To: apmail-hadoop-mapreduce-issues-archive@minotaur.apache.org Received: (qmail 62888 invoked from network); 5 Feb 2010 23:46:49 -0000 Received: from hermes.apache.org (HELO mail.apache.org) (140.211.11.3) by minotaur.apache.org with SMTP; 5 Feb 2010 23:46:49 -0000 Received: (qmail 66616 invoked by uid 500); 5 Feb 2010 23:46:49 -0000 Delivered-To: apmail-hadoop-mapreduce-issues-archive@hadoop.apache.org Received: (qmail 66546 invoked by uid 500); 5 Feb 2010 23:46:48 -0000 Mailing-List: contact mapreduce-issues-help@hadoop.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: mapreduce-issues@hadoop.apache.org Delivered-To: mailing list mapreduce-issues@hadoop.apache.org Received: (qmail 66536 invoked by uid 99); 5 Feb 2010 23:46:48 -0000 Received: from athena.apache.org (HELO athena.apache.org) (140.211.11.136) by apache.org (qpsmtpd/0.29) with ESMTP; Fri, 05 Feb 2010 23:46:48 +0000 X-ASF-Spam-Status: No, hits=-2000.0 required=10.0 tests=ALL_TRUSTED X-Spam-Check-By: apache.org Received: from [140.211.11.140] (HELO brutus.apache.org) (140.211.11.140) by apache.org (qpsmtpd/0.29) with ESMTP; Fri, 05 Feb 2010 23:46:48 +0000 Received: from brutus.apache.org (localhost [127.0.0.1]) by brutus.apache.org (Postfix) with ESMTP id 1D4AC29A0041 for ; Fri, 5 Feb 2010 15:46:28 -0800 (PST) Message-ID: <258528426.87601265413588118.JavaMail.jira@brutus.apache.org> Date: Fri, 5 Feb 2010 23:46:28 +0000 (UTC) From: "Scott Chen (JIRA)" To: mapreduce-issues@hadoop.apache.org Subject: [jira] Updated: (MAPREDUCE-1463) Reducer should start faster for smaller jobs In-Reply-To: <1285871837.82231265407708017.JavaMail.jira@brutus.apache.org> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-JIRA-FingerPrint: 30527f35849b9dde25b450d4833f0394 [ https://issues.apache.org/jira/browse/MAPREDUCE-1463?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Scott Chen updated MAPREDUCE-1463: ---------------------------------- Attachment: (was: MAPREDUCE-1463-v1.patch) > Reducer should start faster for smaller jobs > -------------------------------------------- > > Key: MAPREDUCE-1463 > URL: https://issues.apache.org/jira/browse/MAPREDUCE-1463 > Project: Hadoop Map/Reduce > Issue Type: Improvement > Components: contrib/fair-share > Reporter: Scott Chen > Assignee: Scott Chen > > Our users often complain about the slowness of smaller ad-hoc jobs. > The overhead to wait for the reducers to start in this case is significant. > It will be good if we can start the reducer sooner in this case. -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.