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https://issues.apache.org/jira/browse/MAPREDUCE-754?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12775110#action_12775110
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Hadoop QA commented on MAPREDUCE-754:
-------------------------------------
+1 overall. Here are the results of testing the latest attachment
http://issues.apache.org/jira/secure/attachment/12424195/mapreduce-754-v1.1.patch
against trunk revision 833990.
+1 @author. The patch does not contain any @author tags.
+1 tests included. The patch appears to include 3 new or modified tests.
+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 warnings.
+1 core tests. The patch passed core unit tests.
+1 contrib tests. The patch passed contrib unit tests.
Test results:
http://hudson.zones.apache.org/hudson/job/Mapreduce-Patch-h6.grid.sp2.yahoo.net/232/testReport/
Findbugs warnings:
http://hudson.zones.apache.org/hudson/job/Mapreduce-Patch-h6.grid.sp2.yahoo.net/232/artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Checkstyle results:
http://hudson.zones.apache.org/hudson/job/Mapreduce-Patch-h6.grid.sp2.yahoo.net/232/artifact/trunk/build/test/checkstyle-errors.html
Console output:
http://hudson.zones.apache.org/hudson/job/Mapreduce-Patch-h6.grid.sp2.yahoo.net/232/console
This message is automatically generated.
> NPE in expiry thread when a TT is lost
> --------------------------------------
>
> Key: MAPREDUCE-754
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-754
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: jobtracker
> Affects Versions: 0.20.1
> Reporter: Ramya R
> Assignee: Amar Kamat
> Priority: Minor
> Fix For: 0.22.0
>
> Attachments: mapreduce-754-v1.1.patch, mapreduce-754-wip.patch
>
>
> NullPointerException is obtained in Tracker Expiry Thread. Below is the
> exception obtained in the JT logs
> {noformat}
> ERROR org.apache.hadoop.mapred.JobTracker: Tracker Expiry Thread got
> exception: java.lang.NullPointerException
> at
> org.apache.hadoop.mapred.JobTracker.updateTaskTrackerStatus(JobTracker.java:2971)
> at org.apache.hadoop.mapred.JobTracker.access$300(JobTracker.java:104)
> at
> org.apache.hadoop.mapred.JobTracker$ExpireTrackers.run(JobTracker.java:381)
> at java.lang.Thread.run(Thread.java:619)
> {noformat}
> The steps to reproduce this issue are:
> * Blacklist a TT.
> * Restart it.
> * The above exception is obtained when the first instance of TT is marked as
> lost.
> However the above exception does not break any functionality.
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