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https://issues.apache.org/jira/browse/HCATALOG-261?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13209866#comment-13209866
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Alan Gates commented on HCATALOG-261:
-------------------------------------

Looks good.  A couple of questions.

In HCatSemanticAnalyzer, did you mean to take out the authorize calls in the 
DESCTABLE and SHOWPARTITIONS cases?

For the SEQUENCEFILE_INPUT and OUTPUT constants, there are not already Hive 
constants for this that we could reuse?
                
> Enable more DDL statements for HCat
> -----------------------------------
>
>                 Key: HCATALOG-261
>                 URL: https://issues.apache.org/jira/browse/HCATALOG-261
>             Project: HCatalog
>          Issue Type: New Feature
>            Reporter: Daniel Dai
>            Assignee: Daniel Dai
>             Fix For: 0.4
>
>         Attachments: HCATALOG-261-1.patch
>
>
> Currently HCat allow a selected set of DDL statements and delegate them to 
> Hive. We shall allow more DDL statements. The criteria is the DDL statement 
> is nonblocking. Locking is not considered since otherwise most DDL operation 
> will be blocking. Allowed DDL includes:
> * database DDL
> * view DDL
> * index DDL (no actual index building, eg, alter index rebuild is excluded)
> * authorization DDL
> * lock management DDL
> * table management DDL (no create as select)
> * table partition management DDL (no CONCATENATE, archive/unarchive)
> * table schema management DDL
> * Misc: show function, explain, dfs, set
> import/export which are supported before is dropped since they are blocking.

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