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From "Amareshwari Sriramadasu (JIRA)" <j...@apache.org>
Subject [jira] Created: (HADOOP-3403) Job tracker's ExpireTackers thread gets NullPointerException if a tasktracker is lost.
Date Fri, 16 May 2008 07:52:55 GMT
Job tracker's ExpireTackers thread gets NullPointerException if a tasktracker is lost.
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                 Key: HADOOP-3403
                 URL: https://issues.apache.org/jira/browse/HADOOP-3403
             Project: Hadoop Core
          Issue Type: Bug
          Components: mapred
    Affects Versions: 0.18.0
            Reporter: Amareshwari Sriramadasu
            Assignee: Amareshwari Sriramadasu
             Fix For: 0.18.0


JobTracker's ExpireTrackers gets NullPOinterException, if a tasktracker is lost.
JobTracker's log shows the following:

2008-05-16 04:48:08,170 INFO org.apache.hadoop.mapred.JobTracker: Lost tracker 'tracker_XXXXX.com:XXXXX.com/98.136.100.125:58462'
2008-05-16 04:48:08,170 INFO org.apache.hadoop.mapred.TaskInProgress: Error from attempt_200805160431_0001_m_000001_0:
Lost task tracker: tracker_XXXXX.com:XXXXX.com/98.136.100.125:58462
2008-05-16 04:48:08,171 ERROR org.apache.hadoop.mapred.JobTracker: Tracker Expiry Thread got
exception: java.lang.NullPointerException
	at org.apache.hadoop.mapred.JobInProgress.failedTask(JobInProgress.java:1489)
	at org.apache.hadoop.mapred.JobInProgress.updateTaskStatus(JobInProgress.java:537)
	at org.apache.hadoop.mapred.JobInProgress.failedTask(JobInProgress.java:1595)
	at org.apache.hadoop.mapred.JobTracker.lostTaskTracker(JobTracker.java:2079)
	at org.apache.hadoop.mapred.JobTracker$ExpireTrackers.run(JobTracker.java:301)
	at java.lang.Thread.run(Thread.java:619)


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