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https://issues.apache.org/jira/browse/HADOOP-4906?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12658779#action_12658779
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Sharad Agarwal commented on HADOOP-4906:
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TaskInProgress object references are held by Map<TaskAttemptID, TaskInProgress>
*tasks* and Map<JobID, RunningJob> *runningJobs*. These are not cleared until
the job is complete.
These are not really required to be hanging around till the job completion. As
soon as the task finishes, these can be cleared.
> TaskTracker running out of memory after running several tasks
> -------------------------------------------------------------
>
> Key: HADOOP-4906
> URL: https://issues.apache.org/jira/browse/HADOOP-4906
> Project: Hadoop Core
> Issue Type: Bug
> Components: mapred
> Affects Versions: 0.19.0
> Reporter: Arun C Murthy
> Assignee: Sharad Agarwal
> Priority: Blocker
> Fix For: 0.20.0
>
>
> Looks like the TaskTracker isn't cleaning up correctly after completed/failed
> tasks, I suspect that the JobConfs aren't being deallocated. Eventually the
> TaskTracker runs out of memory after running several tasks.
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