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From "Owen O'Malley (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-648) JobClient waitForCompletion() method sometimes throws an NPE
Date Tue, 31 Oct 2006 18:07:17 GMT
    [ http://issues.apache.org/jira/browse/HADOOP-648?page=comments#action_12445980 ] 
            
Owen O'Malley commented on HADOOP-648:
--------------------------------------

I looked at the code and that should only come back null if the job has been retired by the
job tracker (24 hours after it finished/failed).

I wonder if there is a race condition on the JobTracker's job map.

> JobClient waitForCompletion() method sometimes throws an NPE
> ------------------------------------------------------------
>
>                 Key: HADOOP-648
>                 URL: http://issues.apache.org/jira/browse/HADOOP-648
>             Project: Hadoop
>          Issue Type: Bug
>          Components: mapred
>    Affects Versions: 0.6.1
>            Reporter: Thomas Friol
>
> java.lang.NullPointerException
>         at org.apache.hadoop.mapred.JobClient$NetworkedJob.isComplete(JobClient.java:113)
>         at org.apache.hadoop.mapred.JobClient$NetworkedJob.waitForCompletion(JobClient.java:128)
> Does someone have an idea why this happens ?
> Thanks for any help.

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