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https://issues.apache.org/jira/browse/HIVE-2441?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13103027#comment-13103027
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Carl Steinbach commented on HIVE-2441:
--------------------------------------

@Ashutosh: automatic schema evolution is not safe for production use since it 
can (and has!) resulted in corrupted schemas. Executing all of the DDL up front 
allows the metastore admin to lock down the schema by revoking 
alter/create/drop privileges for users.



> Metastore upgrade scripts for schema change introduced in HIVE-2215
> -------------------------------------------------------------------
>
>                 Key: HIVE-2441
>                 URL: https://issues.apache.org/jira/browse/HIVE-2441
>             Project: Hive
>          Issue Type: Task
>          Components: Metastore
>            Reporter: Carl Steinbach
>            Assignee: Ashutosh Chauhan
>            Priority: Blocker
>             Fix For: 0.8.0
>
>


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