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Posted to common-dev@hadoop.apache.org by "Arun C Murthy (JIRA)" <ji...@apache.org> on 2008/05/16 20:41:55 UTC
[jira] Assigned: (HADOOP-3403) Job tracker's ExpireTackers thread
gets NullPointerException if a tasktracker is lost.
[ https://issues.apache.org/jira/browse/HADOOP-3403?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Arun C Murthy reassigned HADOOP-3403:
-------------------------------------
Assignee: Arun C Murthy (was: Amareshwari Sriramadasu)
I propose we fix this first-up with a part of the patch which I've put up on HADOOP-3333 (which is a larger patch which needs to be reimplemented/retested).
> Job tracker's ExpireTackers thread gets NullPointerException if a tasktracker is lost.
> --------------------------------------------------------------------------------------
>
> 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: Arun C Murthy
> Priority: Blocker
> 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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