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From "Devaraj Das (JIRA)" <j...@apache.org>
Subject [jira] Created: (HADOOP-4956) NPE when jobdetails.jsp
Date Tue, 30 Dec 2008 10:30:44 GMT
NPE when jobdetails.jsp 
------------------------

                 Key: HADOOP-4956
                 URL: https://issues.apache.org/jira/browse/HADOOP-4956
             Project: Hadoop Core
          Issue Type: Bug
          Components: mapred
            Reporter: Devaraj Das
            Assignee: Devaraj Das
            Priority: Blocker
             Fix For: 0.20.0
         Attachments: 4956.patch

I see exceptions like the one pasted below on the job UI. This happens when tasks fail.
java.lang.NullPointerException
	at org.apache.hadoop.mapred.Counters.incrAllCounters(Counters.java:440)
	at org.apache.hadoop.mapred.JobInProgress.incrementTaskCounters(JobInProgress.java:910)
	at org.apache.hadoop.mapred.JobInProgress.getMapCounters(JobInProgress.java:880)
	at org.apache.hadoop.mapred.jobdetails_jsp._jspService(jobdetails_jsp.java:313)
	at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
	at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:502)
	at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:363)
	at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
	at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181)
	at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:766)
	at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:417)
	at org.mortbay.jetty.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:230)
	at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
	at org.mortbay.jetty.Server.handle(Server.java:324)
	at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:534)
	at org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:864)
	at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:533)
	at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:207)
	at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:403)
	at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:409)
	at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:522)


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