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https://issues.apache.org/jira/browse/HIVE-12598?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15045510#comment-15045510
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Prasanth Jayachandran commented on HIVE-12598:
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It will be better to fix it by adding data added/modified to decrease 
collision. Also better to remove the description about correctness issue as I 
feel it will scare people away from enabling it. 

> LLAP: disable fileId when not supported
> ---------------------------------------
>
>                 Key: HIVE-12598
>                 URL: https://issues.apache.org/jira/browse/HIVE-12598
>             Project: Hive
>          Issue Type: Bug
>            Reporter: Sergey Shelukhin
>            Assignee: Sergey Shelukhin
>         Attachments: HIVE-12598.patch
>
>
> There is a TODO somewhere in code. We might get a synthetic fileId in absence 
> of the real one in some cases when another FS masquerades as HDFS, we should 
> be able to turn off fileID support explicitly for such cases as they are not 
> bulletproof.



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