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https://issues.apache.org/jira/browse/HADOOP-5641?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12702330#action_12702330
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Vinod K V commented on HADOOP-5641:
-----------------------------------
The particular method call in question is {code}
scheduler.taskTrackerManager.getJob(task.getTaskID().getJobID()).getJobConf();
{code} in MemoryMatcher.getMemReservedForTasks(TaskTrackerStatus taskTracker)
> Possible NPE in CapacityScheduler's MemoryMatcher
> -------------------------------------------------
>
> Key: HADOOP-5641
> URL: https://issues.apache.org/jira/browse/HADOOP-5641
> Project: Hadoop Core
> Issue Type: Bug
> Reporter: Vinod K V
> Assignee: rahul k singh
>
> MemoryMatches does a job lookup based on a JobID in its
> getMemReservedForTasks(TaskTrackerStatus taskTracker) method. By this time,
> job might have been removed from JT's memory resulting in a NPE.
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