Sergey Shelukhin created HIVE-16778:
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Summary: 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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