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https://issues.apache.org/jira/browse/HIVE-13151?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15218669#comment-15218669
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Sushanth Sowmyan commented on HIVE-13151:
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Thanks, Wei - this was an important leak to plug!
> Clean up UGI objects in FileSystem cache for transactions
> ---------------------------------------------------------
>
> Key: HIVE-13151
> URL: https://issues.apache.org/jira/browse/HIVE-13151
> Project: Hive
> Issue Type: Bug
> Components: Hive
> Affects Versions: 2.0.0
> Reporter: Wei Zheng
> Assignee: Wei Zheng
> Fix For: 1.3.0, 2.1.0
>
> Attachments: HIVE-13151.1.patch, HIVE-13151.2.patch,
> HIVE-13151.3.patch, HIVE-13151.4.patch, HIVE-13151.ADDENDUM.patch
>
>
> One issue with FileSystem.CACHE is that it does not clean itself. The key in
> that cache includes UGI object. When new UGI objects are created and used
> with the FileSystem api, new entries get added to the cache.
> We need to manually clean up those UGI objects once they are no longer in use.
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