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https://issues.apache.org/jira/browse/MAPREDUCE-1397?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12842683#action_12842683
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Hadoop QA commented on MAPREDUCE-1397:
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-1 overall. Here are the results of testing the latest attachment
http://issues.apache.org/jira/secure/attachment/12438177/patch-1397.txt
against trunk revision 920250.
+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 appears to introduce 2 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-h4.grid.sp2.yahoo.net/24/testReport/
Findbugs warnings:
http://hudson.zones.apache.org/hudson/job/Mapreduce-Patch-h4.grid.sp2.yahoo.net/24/artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Checkstyle results:
http://hudson.zones.apache.org/hudson/job/Mapreduce-Patch-h4.grid.sp2.yahoo.net/24/artifact/trunk/build/test/checkstyle-errors.html
Console output:
http://hudson.zones.apache.org/hudson/job/Mapreduce-Patch-h4.grid.sp2.yahoo.net/24/console
This message is automatically generated.
> NullPointerException observed during task failures
> --------------------------------------------------
>
> Key: MAPREDUCE-1397
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-1397
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: tasktracker
> Affects Versions: 0.20.1
> Reporter: Ramya R
> Assignee: Amareshwari Sriramadasu
> Priority: Minor
> Fix For: 0.22.0
>
> Attachments: patch-1397.txt
>
>
> In an environment where many jobs are killed simultaneously, NPEs are
> observed in the TT/JT logs when a task fails. The situation is aggravated
> when the taskcontroller.cfg is not configured properly. Below is the
> exception obtained:
> {noformat}
> INFO org.apache.hadoop.mapred.TaskInProgress: Error from <attempt_ID>:
> java.lang.Throwable: Child Error
> at org.apache.hadoop.mapred.TaskRunner.run(TaskRunner.java:529)
> Caused by: java.lang.NullPointerException
> at
> org.apache.hadoop.mapred.JvmManager$JvmManagerForType.getDetails(JvmManager.java:329)
> at
> org.apache.hadoop.mapred.JvmManager$JvmManagerForType.reapJvm(JvmManager.java:315)
> at
> org.apache.hadoop.mapred.JvmManager$JvmManagerForType.access$000(JvmManager.java:146)
> at org.apache.hadoop.mapred.JvmManager.launchJvm(JvmManager.java:109)
> at org.apache.hadoop.mapred.TaskRunner.run(TaskRunner.java:502)
> {noformat}
--
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