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https://issues.apache.org/jira/browse/HIVE-12043?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14945832#comment-14945832
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Sergey Shelukhin commented on HIVE-12043:
-----------------------------------------

+1 if it works :) Can you rename the method to some logical name, like 
callWithUgi, or performDataRead, or whatever

> UGI instances being used in IO elevator threads are incorrect
> -------------------------------------------------------------
>
>                 Key: HIVE-12043
>                 URL: https://issues.apache.org/jira/browse/HIVE-12043
>             Project: Hive
>          Issue Type: Sub-task
>            Reporter: Siddharth Seth
>            Assignee: Siddharth Seth
>             Fix For: llap
>
>         Attachments: HIVE-12043.1.txt
>
>
> ... which leads to FileSystem closed exceptions.
> I'm not sure yet if this is a result of the threadpool being used, and UGI 
> not working well with threadpools, or something else.
> The UGI instance which was setup - at what looks to be thread creation time - 
> ends up being used for several different reads, ignoring the actual UGI 
> passed in. At some point this changes to a new incorrect UGI.
> A simple fix is to propagate the correct UGI all the way to the reader, and 
> that fixes the FileSystem Closed exception. Figuring out the precise reason 
> would be good though.
> Related to HIVE-9898.



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