hadoop-mapreduce-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Qi Liu (JIRA)" <j...@apache.org>
Subject [jira] Created: (MAPREDUCE-1136) ConcurrentModificationException when tasktracker updates task status to jobtracker
Date Thu, 22 Oct 2009 23:29:59 GMT
ConcurrentModificationException when tasktracker updates task status to jobtracker
----------------------------------------------------------------------------------

                 Key: MAPREDUCE-1136
                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-1136
             Project: Hadoop Map/Reduce
          Issue Type: Bug
          Components: tasktracker
            Reporter: Qi Liu


In Hadoop 0.18.3, the following exception happened during a job execution. It does not happen
often.

Here is the stack trace of the exception.
org.apache.hadoop.ipc.RemoteException: java.io.IOException: java.util.ConcurrentModificationException
        at java.util.TreeMap$PrivateEntryIterator.nextEntry(TreeMap.java:1100)
        at java.util.TreeMap$ValueIterator.next(TreeMap.java:1145)
        at org.apache.hadoop.mapred.JobTracker.getAllJobs(JobTracker.java:2376)
        at sun.reflect.GeneratedMethodAccessor32.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:481)
        at org.apache.hadoop.ipc.Server$Handler.run(Server.java:890)
 org.apache.hadoop.ipc.Client.call(Client.java:716)


-- 
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.


Mime
View raw message