Return-Path: Delivered-To: apmail-hadoop-common-user-archive@www.apache.org Received: (qmail 73300 invoked from network); 27 Nov 2009 06:20:24 -0000 Received: from hermes.apache.org (HELO mail.apache.org) (140.211.11.3) by minotaur.apache.org with SMTP; 27 Nov 2009 06:20:24 -0000 Received: (qmail 10019 invoked by uid 500); 27 Nov 2009 06:20:22 -0000 Delivered-To: apmail-hadoop-common-user-archive@hadoop.apache.org Received: (qmail 9857 invoked by uid 500); 27 Nov 2009 06:20:20 -0000 Mailing-List: contact common-user-help@hadoop.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: common-user@hadoop.apache.org Delivered-To: mailing list common-user@hadoop.apache.org Received: (qmail 9847 invoked by uid 99); 27 Nov 2009 06:20:20 -0000 Received: from nike.apache.org (HELO nike.apache.org) (192.87.106.230) by apache.org (qpsmtpd/0.29) with ESMTP; Fri, 27 Nov 2009 06:20:20 +0000 X-ASF-Spam-Status: No, hits=-4.0 required=10.0 tests=RCVD_IN_DNSWL_MED,SPF_PASS X-Spam-Check-By: apache.org Received-SPF: pass (nike.apache.org: local policy) Received: from [128.205.5.208] (HELO localmailD.acsu.buffalo.edu) (128.205.5.208) by apache.org (qpsmtpd/0.29) with ESMTP; Fri, 27 Nov 2009 06:20:10 +0000 Received: from localmailD.acsu.buffalo.edu (localhost [127.0.0.1]) by localhost (Postfix) with SMTP id 7AF841ACBD for ; Fri, 27 Nov 2009 01:19:49 -0500 (EST) Received: from localmailD.acsu.buffalo.edu (localhost [127.0.0.1]) by localmailD.acsu.buffalo.edu (Postfix) with ESMTP id D00801A562 for ; Fri, 27 Nov 2009 01:19:47 -0500 (EST) Received: from mweb1.acsu.buffalo.edu (mweb1.acsu.buffalo.edu [128.205.5.238]) by localmailD.acsu.buffalo.edu (Prefixe) with ESMTP id 9F8121A6E4 for ; Fri, 27 Nov 2009 01:19:47 -0500 (EST) Received: from localhost (ubmail.acsu.buffalo.edu [128.205.6.72]) by mweb1.acsu.buffalo.edu (Postfix) with ESMTP id CDDCF5B003A for ; Fri, 27 Nov 2009 01:19:46 -0500 (EST) MIME-Version: 1.0 X-Mailer: AtMail PHP 5.41 Message-ID: <35036.1259302786@buffalo.edu> To: Reply-To: aa225@buffalo.edu Content-Type: text/plain; charset="utf-8" X-Origin: 72.228.163.248 X-Atmail-Account: aa225@buffalo.edu Date: Fri, 27 Nov 2009 01:19:46 -0500 Subject: Doubt in Hadoop From: aa225@buffalo.edu Content-Transfer-Encoding: quoted-printable X-PM-EL-Spam-Prob: : 8% X-Virus-Checked: Checked by ClamAV on apache.org Hello Everybody, I have a doubt in Haddop and was wondering if anybody has f= aced a similar problem. I have a package called test. Inside that I have class cal= led A.java, Map.java, Reduce.java. In A.java I have the main method where I am = trying to initialize the jobConf object. I have written jobConf.setMapperClass(Map.class) and similarly for the reduce class as wel= l. The code works correctly when I run the code locally via jobConf.set("mapred.job.tracker","local") but I get an exception when I try= to run this code on my cluster. The stack trace of the exception is as under. = I cannot understand the problem. Any help would be appreciated. java.lang.RuntimeException: java.lang.RuntimeException: java.lang.ClassNotFoundException: test.Map at org.apache.hadoop.conf.Configuration.getClass(Configuration.java= :752) at org.apache.hadoop.mapred.JobConf.getMapperClass(JobConf.java:690= ) at org.apache.hadoop.mapred.MapRunner.configure(MapRunner.java:34) at org.apache.hadoop.util.ReflectionUtils.setConf(ReflectionUtils.j= ava:58) at org.apache.hadoop.util.ReflectionUtils.newInstance(ReflectionUtils.java:83) at org.apache.hadoop.mapred.MapTask.run(MapTask.java:338) at org.apache.hadoop.mapred.Child.main(Child.java:158) Caused by: java.lang.RuntimeException: java.lang.ClassNotFoundException: Markowitz.covarMatrixMap at org.apache.hadoop.conf.Configuration.getClass(Configuration.java= :720) at org.apache.hadoop.conf.Configuration.getClass(Configuration.java= :744) ... 6 more Caused by: java.lang.ClassNotFoundException: test.Map at java.net.URLClassLoader$1.run(URLClassLoader.java:200) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:188) at java.lang.ClassLoader.loadClass(ClassLoader.java:306) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:276) at java.lang.ClassLoader.loadClass(ClassLoader.java:251) at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:247) at org.apache.hadoop.conf.Configuration.getClassByName(Configuration.java:673) at org.apache.hadoop.conf.Configuration.getClass(Configuration.java= :718) ... 7 more Thank You=20 Abhishek Agrawal SUNY- Buffalo (716-435-7122)