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From "Gary Helmling (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-6104) Require EXEC permission to call coprocessor endpoints
Date Fri, 25 May 2012 19:44:22 GMT
Gary Helmling created HBASE-6104:

             Summary: 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
            Reporter: Gary Helmling

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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