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From "Devaraj K (Created) (JIRA)" <j...@apache.org>
Subject [jira] [Created] (MAPREDUCE-4047) NullPointerException during the map task merge phase
Date Wed, 21 Mar 2012 09:57:40 GMT
NullPointerException during the map task merge phase
----------------------------------------------------

                 Key: MAPREDUCE-4047
                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4047
             Project: Hadoop Map/Reduce
          Issue Type: Bug
          Components: mrv2
            Reporter: Devaraj K


While executing the tera sort with 1TB data, got the below exception

{code:xml}
2012-03-20 21:02:18,526 FATAL [IPC Server handler 14 on 31776] org.apache.hadoop.mapred.TaskAttemptListenerImpl:
Task: attempt_1332261815858_0002_m_003124_0 - exited : java.lang.NullPointerException
        at org.apache.hadoop.mapred.IFile$Writer.<init>(IFile.java:135)
        at org.apache.hadoop.mapred.MapTask$MapOutputBuffer.mergeParts(MapTask.java:1845)
        at org.apache.hadoop.mapred.MapTask$MapOutputBuffer.flush(MapTask.java:1438)
        at org.apache.hadoop.mapred.MapTask$NewOutputCollector.close(MapTask.java:663)
        at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:730)
        at org.apache.hadoop.mapred.MapTask.run(MapTask.java:332)
        at org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:147)
        at java.security.AccessController.doPrivileged(Native Method)
        at javax.security.auth.Subject.doAs(Subject.java:396)
        at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1177)
        at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:142)
{code}

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