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https://issues.apache.org/jira/browse/HADOOP-5607?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Chris Douglas updated HADOOP-5607:
----------------------------------
Attachment: 5607-0.patch
Make JT ref final, avoid NPE by only pulling metrics when used (since gc also
derefs, should be sufficient)
> 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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