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Posted to common-dev@hadoop.apache.org by "Owen O'Malley (JIRA)" <ji...@apache.org> on 2007/03/13 17:39:10 UTC
[jira] Updated: (HADOOP-1011) ConcurrentModificationException in
JobHistory
[ https://issues.apache.org/jira/browse/HADOOP-1011?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Owen O'Malley updated HADOOP-1011:
----------------------------------
Assignee: Tahir Hashmi
> ConcurrentModificationException in JobHistory
> ---------------------------------------------
>
> Key: HADOOP-1011
> URL: https://issues.apache.org/jira/browse/HADOOP-1011
> Project: Hadoop
> Issue Type: Bug
> Components: mapred
> Affects Versions: 0.11.1
> Reporter: Nigel Daley
> Assigned To: Tahir Hashmi
>
> Using the jobtracker web ui to look at job history. Loading multiple history URLs concurrently in differnt browser windows yielded this exception in the jobtracker log:
> 2007-02-12 21:49:00,574 WARN /: /taskdetailshistory.jsp?jobid=job_0001&jobTrackerId=1171157609392&taskid=tip_0001_m_002660:
> java.util.ConcurrentModificationException
> at java.util.HashMap$HashIterator.nextEntry(HashMap.java:787)
> at java.util.HashMap$EntryIterator.next(HashMap.java:829)
> at java.util.HashMap$EntryIterator.next(HashMap.java:827)
> at java.util.HashMap.putAll(HashMap.java:515)
> at org.apache.hadoop.mapred.JobHistory$KeyValuePair.set(JobHistory.java:263)
> at org.apache.hadoop.mapred.JobHistory$KeyValuePair.handle(JobHistory.java:270)
> at org.apache.hadoop.mapred.DefaultJobHistoryParser$JobTasksParseListener.handle(DefaultJobHistoryParser.java:98)
> at org.apache.hadoop.mapred.JobHistory.parseLine(JobHistory.java:150)
> at org.apache.hadoop.mapred.JobHistory.parseHistory(JobHistory.java:125)
> at org.apache.hadoop.mapred.DefaultJobHistoryParser.parseJobTasks(DefaultJobHistoryParser.java:38)
> at org.apache.hadoop.mapred.loadhistory_jsp._jspService(loadhistory_jsp.java:83)
> at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
> at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:427)
> at org.mortbay.jetty.servlet.WebApplicationHandler.dispatch(WebApplicationHandler.java:475)
> at org.mortbay.jetty.servlet.Dispatcher.dispatch(Dispatcher.java:275)
> at org.mortbay.jetty.servlet.Dispatcher.include(Dispatcher.java:161)
> at org.apache.jasper.runtime.JspRuntimeLibrary.include(JspRuntimeLibrary.java:966)
> at org.apache.hadoop.mapred.taskdetailshistory_jsp._jspService(taskdetailshistory_jsp.java:73)
> at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
> at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:427)
> at org.mortbay.jetty.servlet.WebApplicationHandler.dispatch(WebApplicationHandler.java:475)
> at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:567)
> at org.mortbay.http.HttpContext.handle(HttpContext.java:1565)
> at org.mortbay.jetty.servlet.WebApplicationContext.handle(WebApplicationContext.java:635)
> at org.mortbay.http.HttpContext.handle(HttpContext.java:1517)
> at org.mortbay.http.HttpServer.service(HttpServer.java:954)
> at org.mortbay.http.HttpConnection.service(HttpConnection.java:814)
> at org.mortbay.http.HttpConnection.handleNext(HttpConnection.java:981)
> at org.mortbay.http.HttpConnection.handle(HttpConnection.java:831)
> at org.mortbay.http.SocketListener.handleConnection(SocketListener.java:244)
> at org.mortbay.util.ThreadedServer.handle(ThreadedServer.java:357)
> at org.mortbay.util.ThreadPool$PoolThread.run(ThreadPool.java:534)
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