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Posted to issues@hive.apache.org by "Prasanth Jayachandran (JIRA)" <ji...@apache.org> on 2017/06/02 21:13:04 UTC

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

    [ https://issues.apache.org/jira/browse/HIVE-16778?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16035430#comment-16035430 ] 

Prasanth Jayachandran commented on HIVE-16778:
----------------------------------------------

+1

> LLAP IO: better refcount management
> -----------------------------------
>
>                 Key: HIVE-16778
>                 URL: https://issues.apache.org/jira/browse/HIVE-16778
>             Project: Hive
>          Issue Type: Bug
>            Reporter: Sergey Shelukhin
>            Assignee: Sergey Shelukhin
>         Attachments: HIVE-16778.patch, HIVE-16778.patch
>
>
> 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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