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From "sam rash (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-5608) NullPointerException when retrieving task reports
Date Wed, 01 Apr 2009 17:44:12 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-5608?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12694637#action_12694637
] 

sam rash commented on HADOOP-5608:
----------------------------------

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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