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https://issues.apache.org/jira/browse/HIVE-16418?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15968256#comment-15968256
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Eugene Koifman commented on HIVE-16418:
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It seems that storing TZ will cause more confusion than it's worth.  I'm not 
even sure it's a good idea to automatically convert UTC to local TZ.  This 
should be done by the application displaying the value or through an explicit 
conversion/formatting SQL function.  This way it's always obvious what the 
default comparison/sorting is and what modifications to those operation any 
particular query is requesting.  

> Allow HiveKey to skip some bytes for comparison
> -----------------------------------------------
>
>                 Key: HIVE-16418
>                 URL: https://issues.apache.org/jira/browse/HIVE-16418
>             Project: Hive
>          Issue Type: New Feature
>            Reporter: Rui Li
>            Assignee: Rui Li
>         Attachments: HIVE-16418.1.patch
>
>
> The feature is required when we have to serialize some fields and prevent 
> them from being used in comparison, e.g. HIVE-14412.



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