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https://issues.apache.org/jira/browse/HIVE-8914?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Eugene Koifman resolved HIVE-8914.
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Resolution: Fixed
Thanks for the contribution [~shanyu]
> HDFSCleanup thread holds reference to FileSystem
> ------------------------------------------------
>
> Key: HIVE-8914
> URL: https://issues.apache.org/jira/browse/HIVE-8914
> Project: Hive
> Issue Type: Bug
> Components: WebHCat
> Affects Versions: 0.13.1
> Reporter: shanyu zhao
> Assignee: shanyu zhao
> Fix For: 0.15.0
>
> Attachments: HIVE-8194.1.patch, HIVE-8914.patch
>
>
> WebHCat server has a long running cleanup thread (HDFSCleanup) which holds a
> reference to FileSystem. Because of this reference, many FileSystem related
> objects (e.g. MetricsSystemImpl) cannot be garbage collected. Sometimes this
> causes OOM exception. Since the cleanup is done every 12 hours by default, we
> can simply recreate a FileSystem when we need to use it.
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