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https://issues.apache.org/jira/browse/HBASE-10619?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13915423#comment-13915423
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Anoop Sam John commented on HBASE-10619:
----------------------------------------

bq.Should the check be more generic? For any table in the system namespace?
I was abt to ask this same here.  I am +1 for this.

Now we allow user to create any tables in hbase namespace.  So in such a case 
user will be able to create some table in hbase NS but can not do any changes 
to that or drop that.

As of now we have handled, protecting acl and visibility labels tables in 
AccessController/VisibilityController.   Making a generic check for system NS 
can avoid this code also.

> Don't allow user to disable/drop NS table
> -----------------------------------------
>
>                 Key: HBASE-10619
>                 URL: https://issues.apache.org/jira/browse/HBASE-10619
>             Project: HBase
>          Issue Type: Bug
>            Reporter: Anoop Sam John
>            Assignee: Anoop Sam John
>         Attachments: HBASE-10619.patch
>
>
> We should treat NS table just like META table, which is having checks so that 
> user can not disable/drop.



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