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From "Owen O'Malley (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HADOOP-593) NullPointerException in JobTracker's ExireTaskTracker thread
Date Tue, 10 Oct 2006 21:20:24 GMT
     [ http://issues.apache.org/jira/browse/HADOOP-593?page=all ]

Owen O'Malley updated HADOOP-593:
---------------------------------

    Status: Patch Available  (was: Open)

> NullPointerException in JobTracker's ExireTaskTracker thread
> ------------------------------------------------------------
>
>                 Key: HADOOP-593
>                 URL: http://issues.apache.org/jira/browse/HADOOP-593
>             Project: Hadoop
>          Issue Type: Bug
>          Components: mapred
>    Affects Versions: 0.7.0
>            Reporter: Owen O'Malley
>         Assigned To: Owen O'Malley
>            Priority: Critical
>             Fix For: 0.7.1
>
>         Attachments: catch-exceptions-in-jt.patch
>
>
> The JobTracker's thread that finds dead task trackers is getting a NullPointerException:
> Exception in thread "Thread-19" java.lang.NullPointerException
>         at org.apache.hadoop.mapred.JobInProgress.failedTask(JobInProgress.java:614)
>         at org.apache.hadoop.mapred.JobInProgress.updateTaskStatus(JobInProgress.java:291)
>         at org.apache.hadoop.mapred.JobInProgress.failedTask(JobInProgress.java:674)
>         at org.apache.hadoop.mapred.JobTracker.lostTaskTracker(JobTracker.java:1204)
>         at org.apache.hadoop.mapred.JobTracker$ExpireTrackers.run(JobTracker.java:225)
>         at java.lang.Thread.run(Thread.java:595)
> Which kills the thread and prevents any other task trackers from being killed.

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