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From "Prasad Mujumdar (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SENTRY-498) Sentry authorization V2 via Hive authorization framework
Date Fri, 05 Jun 2015 08:27:01 GMT

    [ https://issues.apache.org/jira/browse/SENTRY-498?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14574119#comment-14574119
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Prasad Mujumdar commented on SENTRY-498:
----------------------------------------

[~dapengsun] Thanks for continuing the work on this. I do think it's a good idea to develop
this on a feature branch. Let's get a consensus from the community to create a branch.

> Sentry authorization V2 via Hive authorization framework
> --------------------------------------------------------
>
>                 Key: SENTRY-498
>                 URL: https://issues.apache.org/jira/browse/SENTRY-498
>             Project: Sentry
>          Issue Type: New Feature
>            Reporter: Xiaomeng Huang
>            Assignee: Dapeng Sun
>         Attachments: SENTRY-498.003.patch
>
>
> Currently Sentry grant/revoke privileges via hook DDLTask, and do authorization via HiveSemanticAnalyzerHook.
Now hive has a pluggable authorization framework via exposing some interfaces HiveAccessController
and HiveAuthorizationValidator. HiveAccessController is used to grant/revoke roles and privileges.
HiveAuthorizationValidator is used to do fine-grained authorization. 
> Advantages to use this framework to grant/revoke privileges and do authorization:
> - This framework is very convenient to use by external authorization system. 
> - Using this framework will be better accepted by community.
> - We don't need to take efforts to add so many hooks. 
> - Some hooks has limitations. e.g. For column level security, we can't get accessed cloumns
from query via HiveSemanticAnalyzerHook, so I extend the readEntity to put accessed columns
into it(HIVE-7730). But if we use this framework, we don't need to extend the readEntity,
we can just get accessed columns from ColumnAccessInfo directly. 
> I will not remove the old sentry authorization framework, I will just add a new authorizationV2
via implement Hive authorization framework. If all the e2e tests passed, we can mark the old
authorization deprecated.



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