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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-3403) Job tracker's ExpireTackers thread gets NullPointerException if a tasktracker is lost.
Date Fri, 16 May 2008 21:23:55 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-3403?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12597619#action_12597619

Hadoop QA commented on HADOOP-3403:

-1 overall.  Here are the results of testing the latest attachment 
  against trunk revision 656939.

    +1 @author.  The patch does not contain any @author tags.

    -1 tests included.  The patch doesn't appear to include any new or modified tests.
                        Please justify why no tests are needed for this patch.

    +1 javadoc.  The javadoc tool did not generate any warning messages.

    +1 javac.  The applied patch does not increase the total number of javac compiler warnings.

    +1 findbugs.  The patch does not introduce any new Findbugs warnings.

    +1 release audit.  The applied patch does not increase the total number of release audit

    -1 core tests.  The patch failed core unit tests.

    +1 contrib tests.  The patch passed contrib unit tests.

Test results: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch/2491/testReport/
Findbugs warnings: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch/2491/artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Checkstyle results: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch/2491/artifact/trunk/build/test/checkstyle-errors.html
Console output: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch/2491/console

This message is automatically generated.

> 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
>         Attachments: HADOOP-3403_0_20080516.patch
> 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/'
> 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/
> 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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