Return-Path: Delivered-To: apmail-hadoop-core-dev-archive@www.apache.org Received: (qmail 6836 invoked from network); 5 Sep 2008 09:24:11 -0000 Received: from hermes.apache.org (HELO mail.apache.org) (140.211.11.2) by minotaur.apache.org with SMTP; 5 Sep 2008 09:24:11 -0000 Received: (qmail 62521 invoked by uid 500); 5 Sep 2008 09:24:03 -0000 Delivered-To: apmail-hadoop-core-dev-archive@hadoop.apache.org Received: (qmail 62482 invoked by uid 500); 5 Sep 2008 09:24:03 -0000 Mailing-List: contact core-dev-help@hadoop.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: core-dev@hadoop.apache.org Delivered-To: mailing list core-dev@hadoop.apache.org Received: (qmail 62471 invoked by uid 99); 5 Sep 2008 09:24:03 -0000 Received: from athena.apache.org (HELO athena.apache.org) (140.211.11.136) by apache.org (qpsmtpd/0.29) with ESMTP; Fri, 05 Sep 2008 02:24:03 -0700 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 Sep 2008 09:23:13 +0000 Received: from brutus (localhost [127.0.0.1]) by brutus.apache.org (Postfix) with ESMTP id 83CA3234C1D4 for ; Fri, 5 Sep 2008 02:23:44 -0700 (PDT) Message-ID: <1281146139.1220606624538.JavaMail.jira@brutus> Date: Fri, 5 Sep 2008 02:23:44 -0700 (PDT) From: "Hadoop QA (JIRA)" To: core-dev@hadoop.apache.org Subject: [jira] Commented: (HADOOP-3446) The reduce task should not flush the in memory file system before starting the reducer In-Reply-To: <1115045238.1211824682958.JavaMail.jira@brutus> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-Virus-Checked: Checked by ClamAV on apache.org [ https://issues.apache.org/jira/browse/HADOOP-3446?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12628598#action_12628598 ] Hadoop QA commented on HADOOP-3446: ----------------------------------- -1 overall. Here are the results of testing the latest attachment http://issues.apache.org/jira/secure/attachment/12389455/3446-5.patch against trunk revision 692335. +1 @author. The patch does not contain any @author tags. +1 tests included. The patch appears to include 6 new or modified tests. +1 javadoc. The javadoc tool did not generate any warning messages. +1 javac. The applied patch does not increase the total number of javac compiler warnings. +1 findbugs. The patch does not introduce any new Findbugs warnings. -1 core tests. The patch failed core unit tests. +1 contrib tests. The patch passed contrib unit tests. Test results: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch/3184/testReport/ Findbugs warnings: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch/3184/artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html Checkstyle results: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch/3184/artifact/trunk/build/test/checkstyle-errors.html Console output: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch/3184/console This message is automatically generated. > The reduce task should not flush the in memory file system before starting the reducer > -------------------------------------------------------------------------------------- > > Key: HADOOP-3446 > URL: https://issues.apache.org/jira/browse/HADOOP-3446 > Project: Hadoop Core > Issue Type: Improvement > Components: mapred > Reporter: Owen O'Malley > Assignee: Chris Douglas > Priority: Critical > Fix For: 0.19.0 > > Attachments: 3446-0.patch, 3446-1.patch, 3446-2.patch, 3446-3.patch, 3446-4.patch, 3446-5.patch > > > In the case where the entire reduce inputs fit in ram, we currently force the input to disk and re-read it before giving it to the reducer. It would be much better if we merged from the ramfs and any spills to feed the reducer its input. -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.