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https://issues.apache.org/jira/browse/HIVE-5928?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13850574#comment-13850574
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Brock Noland commented on HIVE-5928:
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bq.  interface HiveBaseAuthorizationProvider
bq.  There will be a subclass of HiveBaseAuthorizationProvider 

Since it doesn't look like we have implemented here...may I interject some 
thoughts? I think we should start moving hive development from inheritance to 
composition where possible[1]. This looks like a great place to start.

[1] http://en.wikipedia.org/wiki/Composition_over_inheritance

> Add a hive authorization plugin api that does not assume privileges needed
> --------------------------------------------------------------------------
>
>                 Key: HIVE-5928
>                 URL: https://issues.apache.org/jira/browse/HIVE-5928
>             Project: Hive
>          Issue Type: Sub-task
>          Components: Authorization
>            Reporter: Thejas M Nair
>   Original Estimate: 120h
>  Remaining Estimate: 120h
>
> The existing HiveAuthorizationProvider interface implementations can be used 
> to support custom authorization models.
> But this interface limits the customization for these reasons -
> 1. It has assumptions about the privileges required for an action.
> 2. It does have not functions that you can implement for having custom ways 
> of doing the actions of access control statements.
> This jira proposes a new interface HiveBaseAuthorizationProvider that does 
> not make assumptions of the privileges required for the actions. The 
> authorize() functions will be equivalent of authorize(<hive object>, 
> <action>). It will also have functions that will be called from the access 
> control statements.
> The current HiveAuthorizationProvider will continue to be supported for 
> backward compatibility. There will be a subclass of 
> HiveBaseAuthorizationProvider that executes actions using this interface.



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