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https://issues.apache.org/jira/browse/HADOOP-5608?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12694637#action_12694637
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sam rash commented on HADOOP-5608:
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we see this error in the job-tracker logs
2009-04-01 17:39:51,789 INFO org.apache.hadoop.ipc.Server: IPC Server handler 3
on 9001 caught: java.lang.NullPointerException
at org.apache.hadoop.mapred.TaskReport.write(TaskReport.java:132)
at
org.apache.hadoop.io.ObjectWritable.writeObject(ObjectWritable.java:159)
at
org.apache.hadoop.io.ObjectWritable.writeObject(ObjectWritable.java:126)
at org.apache.hadoop.io.ObjectWritable.write(ObjectWritable.java:70)
> NullPointerException when retrieving task reports
> -------------------------------------------------
>
> Key: HADOOP-5608
> URL: https://issues.apache.org/jira/browse/HADOOP-5608
> Project: Hadoop Core
> Issue Type: Bug
> Components: mapred
> Affects Versions: 0.19.0
> Reporter: sam rash
>
> It appears as thought Counters is null for a given task which causes an NPE
> in the logs (and clients to hang)
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