Return-Path: Delivered-To: apmail-hadoop-mapreduce-issues-archive@minotaur.apache.org Received: (qmail 37168 invoked from network); 31 Aug 2009 05:25:54 -0000 Received: from hermes.apache.org (HELO mail.apache.org) (140.211.11.3) by minotaur.apache.org with SMTP; 31 Aug 2009 05:25:54 -0000 Received: (qmail 20766 invoked by uid 500); 31 Aug 2009 05:25:54 -0000 Delivered-To: apmail-hadoop-mapreduce-issues-archive@hadoop.apache.org Received: (qmail 20709 invoked by uid 500); 31 Aug 2009 05:25:54 -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 20698 invoked by uid 99); 31 Aug 2009 05:25:54 -0000 Received: from athena.apache.org (HELO athena.apache.org) (140.211.11.136) by apache.org (qpsmtpd/0.29) with ESMTP; Mon, 31 Aug 2009 05:25:54 +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; Mon, 31 Aug 2009 05:25:52 +0000 Received: from brutus (localhost [127.0.0.1]) by brutus.apache.org (Postfix) with ESMTP id B4669234C004 for ; Sun, 30 Aug 2009 22:25:32 -0700 (PDT) Message-ID: <709072193.1251696332724.JavaMail.jira@brutus> Date: Sun, 30 Aug 2009 22:25:32 -0700 (PDT) From: "Amar Kamat (JIRA)" To: mapreduce-issues@hadoop.apache.org Subject: [jira] Updated: (MAPREDUCE-796) Encountered "ClassCastException" on tasktracker while running wordcount with MultithreadedMapRunner In-Reply-To: <1171583416.1248348674839.JavaMail.jira@brutus> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-JIRA-FingerPrint: 30527f35849b9dde25b450d4833f0394 X-Virus-Checked: Checked by ClamAV on apache.org [ https://issues.apache.org/jira/browse/MAPREDUCE-796?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Amar Kamat updated MAPREDUCE-796: --------------------------------- Release Note: Multithreaded mapper was modified to create a new Runtime exception (object) from a throwable instead of casting a throwable into a RuntimeException, once the Multithreaded map encounters a fault. > Encountered "ClassCastException" on tasktracker while running wordcount with MultithreadedMapRunner > --------------------------------------------------------------------------------------------------- > > Key: MAPREDUCE-796 > URL: https://issues.apache.org/jira/browse/MAPREDUCE-796 > Project: Hadoop Map/Reduce > Issue Type: Bug > Components: examples > Affects Versions: 0.20.1 > Reporter: Suman Sehgal > Assignee: Amar Kamat > Fix For: 0.20.1 > > Attachments: MAPREDUCE-796-v1.0.patch > > > ClassCastException for OutOfMemoryError is encountered on tasktracker while running wordcount example with MultithreadedMapRunner. > Stack trace : > ========= > java.lang.ClassCastException: java.lang.OutOfMemoryError cannot be cast to java.lang.RuntimeException > at org.apache.hadoop.mapreduce.lib.map.MultithreadedMapper.run(MultithreadedMapper.java:149) > at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:581) > at org.apache.hadoop.mapred.MapTask.run(MapTask.java:303) > at org.apache.hadoop.mapred.Child.main(Child.java:170) -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.