[jira] [Commented] (HBASE-6104) Require EXEC permission to call coprocessor endpoints

["Andrew Purtell (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HBASE-6104?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13854614#comment-13854614 ] 

Andrew Purtell commented on HBASE-6104:
---------------------------------------

We could either put up a fat release note that says to the effect "now you MUST immediately grant all relevant users the ability to execute coprocessors on the respective tables", or grandfather EXEC privilege to all users by default. Thoughts? I think the former makes more sense, but the latter would be transparently backwards compatible.

> Require EXEC permission to call coprocessor endpoints
> -----------------------------------------------------
>
>                 Key: HBASE-6104
>                 URL: https://issues.apache.org/jira/browse/HBASE-6104
>             Project: HBase
>          Issue Type: Sub-task
>          Components: Coprocessors, security
>    Affects Versions: 0.95.2
>            Reporter: Gary Helmling
>            Assignee: Andrew Purtell
>             Fix For: 0.98.0
>
>         Attachments: 6104.patch
>
>
> The EXEC action currently exists as only a placeholder in access control.  It should really be used to enforce access to coprocessor endpoint RPC calls, which are currently unrestricted.
> How the ACLs to support this would be modeled deserves some discussion:
> * Should access be scoped to a specific table and CoprocessorProtocol extension?
> * Should it be possible to grant access to a CoprocessorProtocol implementation globally (regardless of table)?
> * Are per-method restrictions necessary?
> * Should we expose hooks available to endpoint implementors so that they could additionally apply their own permission checks? Some CP endpoints may want to require READ permissions, others may want to enforce WRITE, or READ + WRITE.
> To apply these kinds of checks we would also have to extend the RegionObserver interface to provide hooks wrapping HRegion.exec().



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