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From "Owen O'Malley (JIRA)" <j...@apache.org>
Subject [jira] Created: (HADOOP-593) NullPointerException in JobTracker's ExireTaskTracker thread
Date Tue, 10 Oct 2006 19:01:21 GMT
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

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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