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https://issues.apache.org/jira/browse/HBASE-8692?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13692415#comment-13692415
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Andrew Purtell commented on HBASE-8692:
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About to commit. Just fixing the shell 'describe' command to work as expected.
> [AccessController] Restrict HTableDescriptor enumeration
> --------------------------------------------------------
>
> Key: HBASE-8692
> URL: https://issues.apache.org/jira/browse/HBASE-8692
> Project: HBase
> Issue Type: Improvement
> Components: Coprocessors, security
> Affects Versions: 0.98.0, 0.95.1, 0.94.9
> Reporter: Andrew Purtell
> Assignee: Andrew Purtell
> Attachments: 8692-0.94.patch, 8692-0.94.patch, 8692-0.94.patch,
> 8692.patch, 8692.patch, 8692.patch
>
>
> Some users are concerned about having table schema exposed to every user and
> would like it protected, similar to the rest of the admin operations for
> schema.
> This used to be hopeless because META would leak HTableDescriptors in
> HRegionInfo, but that is no longer the case in 0.94+.
> Consider adding CP hooks in the master for intercepting
> HMasterInterface#getHTableDescriptors and
> HMasterInterface#getHTableDescriptors(List<String>). Add support in the
> AccessController for only allowing GLOBAL ADMIN to the first method. Add
> support in the AccessController for allowing access to the descriptors for
> the table names in the list of the second method only if the user has TABLE
> ADMIN privilege for all of the listed table names.
> Then, fix the code in HBaseAdmin (and elsewhere) that expects to be able to
> enumerate all table descriptors e.g. in deleteTable. A TABLE ADMIN can delete
> a table but won’t have GLOBAL ADMIN privilege to enumerate the total list. So
> a minor fixup is needed here, and in other places like this which make the
> same assumption.
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