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Posted to dev@hive.apache.org by "Sergey Shelukhin (JIRA)" <ji...@apache.org> on 2017/05/27 00:05:04 UTC

[jira] [Created] (HIVE-16778) LLAP IO: better refcount management I

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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