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From "Matteo Bertozzi (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-5352) ACL improvements
Date Thu, 24 May 2012 23:05:17 GMT

    [ https://issues.apache.org/jira/browse/HBASE-5352?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13282823#comment-13282823

Matteo Bertozzi commented on HBASE-5352:

@Laxman yeah create a sub-task for that, ACL can be not in sync with new features, so fill
free to open a new sub-task to sync the coprocessor with the missing stuff.
> ACL improvements
> ----------------
>                 Key: HBASE-5352
>                 URL: https://issues.apache.org/jira/browse/HBASE-5352
>             Project: HBase
>          Issue Type: Improvement
>          Components: security
>    Affects Versions: 0.92.1, 0.94.0
>            Reporter: Enis Soztutar
>            Assignee: Enis Soztutar
> In this issue I would like to open discussion for a few minor ACL related improvements.
The proposed changes are as follows: 
> 1. Introduce something like AccessControllerProtocol.checkPermissions(Permission[] permissions)
API, so that clients can check access rights before carrying out the operations. We need this
kind of operation for HCATALOG-245, which introduces authorization providers for hbase over
hcat. We cannot use getUserPermissions() since it requires ADMIN permissions on the global/table
> 2. getUserPermissions(tableName)/grant/revoke and drop/modify table operations should
not check for global CREATE/ADMIN rights, but table CREATE/ADMIN rights. The reasoning is
that if a user is able to admin or read from a table, she should be able to read the table's
permissions. We can choose whether we want only READ or ADMIN permissions for getUserPermission().
Since we check for global permissions first for table permissions, configuring table access
using global permissions will continue to work.  
> 3. Grant/Revoke global permissions - HBASE-5342 (included for completeness)
> From all 3, we may want to backport the first one to 0.92 since without it, Hive/Hcatalog
cannot use Hbase's authorization mechanism effectively. 
> I will create subissues and convert HBASE-5342 to a subtask when we get some feedback,
and opinions for going further. 

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