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https://issues.apache.org/jira/browse/HIVE-14000?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15331524#comment-15331524
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Matt McCline commented on HIVE-14000:
-------------------------------------

[~sershe] Thank you for the RB comment.  I fixed the problem and resubmitted a 
patch.

> (ORC) Changing a numeric type column of a partitioned table to lower type set 
> values to something other than 'NULL'
> -------------------------------------------------------------------------------------------------------------------
>
>                 Key: HIVE-14000
>                 URL: https://issues.apache.org/jira/browse/HIVE-14000
>             Project: Hive
>          Issue Type: Bug
>          Components: Hive, ORC
>            Reporter: Matt McCline
>            Assignee: Matt McCline
>            Priority: Critical
>         Attachments: HIVE-14000.01.patch, HIVE-14000.03.patch
>
>
> When an integer column is changed to a type that is smaller (e.g. bigint to 
> int) and set hive.metastore.disallow.incompatible.col.type.changes=false, the 
> data is clipped instead of being NULL.



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