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From "Chris Douglas (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-5607) TestCapacityScheduler fails with NPE
Date Wed, 01 Apr 2009 21:55:12 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-5607?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12694774#action_12694774

Chris Douglas commented on HADOOP-5607:

     [exec] -1 overall.  
     [exec]     +1 @author.  The patch does not contain any @author tags.
     [exec]     -1 tests included.  The patch doesn't appear to include any new or modified
     [exec]                         Please justify why no tests are needed for this patch.
     [exec]     +1 javadoc.  The javadoc tool did not generate any warning messages.
     [exec]     +1 javac.  The applied patch does not increase the total number of javac compiler
     [exec]     +1 findbugs.  The patch does not introduce any new Findbugs warnings.
     [exec]     +1 Eclipse classpath. The patch retains Eclipse classpath integrity.
     [exec]     +1 release audit.  The applied patch does not increase the total number of
release audit warnings.

Once the patch is applied, TestCapacityScheduler passes.

> TestCapacityScheduler fails with NPE
> ------------------------------------
>                 Key: HADOOP-5607
>                 URL: https://issues.apache.org/jira/browse/HADOOP-5607
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: contrib/capacity-sched, test
>    Affects Versions: 0.20.0
>            Reporter: Chris Douglas
>         Attachments: 5607-0.patch
> Observed on Hudson:
> {noformat}
> java.lang.NullPointerException
> 	at org.apache.hadoop.mapred.JobInProgress.terminateJob(JobInProgress.java:2117)
> 	at org.apache.hadoop.mapred.JobInProgress.terminate(JobInProgress.java:2153)
> 	at org.apache.hadoop.mapred.JobInProgress.kill(JobInProgress.java:2221)
> 	at org.apache.hadoop.mapred.TestCapacityScheduler$FakeTaskTrackerManager.killJob(TestCapacityScheduler.java:359)
> 	at org.apache.hadoop.mapred.CapacityTaskScheduler.killJobIfInvalidRequirements(CapacityTaskScheduler.java:1431)
> 	at org.apache.hadoop.mapred.CapacityTaskScheduler.jobAdded(CapacityTaskScheduler.java:1463)
> 	at org.apache.hadoop.mapred.JobQueuesManager.jobAdded(JobQueuesManager.java:183)
> 	at org.apache.hadoop.mapred.TestCapacityScheduler$FakeTaskTrackerManager.submitJob(TestCapacityScheduler.java:387)
> 	at org.apache.hadoop.mapred.TestCapacityScheduler.submitJob(TestCapacityScheduler.java:625)
> 	at org.apache.hadoop.mapred.TestCapacityScheduler.testHighMemoryJobWithInvalidRequirements(TestCapacityScheduler.java:1992)
> {noformat}
> This was introduced by HADOOP-5565. FakeJobInProgress doesn't pass a JobTracker reference
to the subtype cstr, so calling kill() derefs the null JT field.

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