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https://issues.apache.org/jira/browse/HADOOP-2847?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12571134#action_12571134
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Hemanth Yamijala commented on HADOOP-2847:
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Until HADOOP-2775 is in place, we probably won't have automated unit tests in
HOD.
Also, same patch should apply for the Hadoop 0.16 branch as well.
> [HOD] Idle cluster cleanup does not work if the JobTracker becomes
> unresponsive to RPC calls
> --------------------------------------------------------------------------------------------
>
> Key: HADOOP-2847
> URL: https://issues.apache.org/jira/browse/HADOOP-2847
> Project: Hadoop Core
> Issue Type: Bug
> Components: contrib/hod
> Affects Versions: 0.16.0
> Reporter: Hemanth Yamijala
> Assignee: Hemanth Yamijala
> Priority: Blocker
> Fix For: 0.16.1
>
> Attachments: hadoop-2847
>
>
> In some erroneous conditions, the Hadoop JobTracker becomes unresponsive to
> RPC calls (for e.g. if a misconfiguration causes the JobTracker to run out of
> memory). In such cases, a cluster allocated by HOD no longer runs any jobs
> and is wastefully holding up nodes. The usual idle cluster cleaner should
> deallocate the cluster ideally, but it does not.
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