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https://issues.apache.org/jira/browse/HBASE-5449?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13416416#comment-13416416
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Gary Helmling commented on HBASE-5449:
--------------------------------------

I see two parts of the current security controls that would need better cross 
version support:

# AccessControllerProtocol implementation for handling grant(), revoke(), etc. 
calls as a coprocessor endpoint
# ACL serialization into ZooKeeper znodes for synchronization across the 
cluster -- I think these are still serialized just as Writables

I'm tackling the AccessControllerProtocol conversion as part of HBASE-5448 
(convert coprocessor endpoints to PB-based RPC).  It's making a handy 
proof-of-concept/test case.  I believe the znode serialization still needs to 
be handled, unless that's been picked up elsewhere.
                
> Support for wire-compatible security functionality
> --------------------------------------------------
>
>                 Key: HBASE-5449
>                 URL: https://issues.apache.org/jira/browse/HBASE-5449
>             Project: HBase
>          Issue Type: Sub-task
>          Components: ipc, master, migration, regionserver
>            Reporter: Todd Lipcon
>            Assignee: Jesse Yates
>


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