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https://issues.apache.org/jira/browse/HIVE-16778?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sergey Shelukhin reassigned HIVE-16778:
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> LLAP IO: better refcount management I
> -------------------------------------
>
> Key: HIVE-16778
> URL: https://issues.apache.org/jira/browse/HIVE-16778
> Project: Hive
> Issue Type: Bug
> Reporter: Sergey Shelukhin
> Assignee: Sergey Shelukhin
>
> Looks like task cancellation can close the UGI, causing the background thread
> to die with an exception, leaving a bunch of unreleased cache buffers.
> Overall, it's probably better to modify how refcounts are handled - if
> there's some bug in the code we don't want to leak them.
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