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https://issues.apache.org/jira/browse/HBASE-5589?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13233947#comment-13233947
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Jonathan Hsieh commented on HBASE-5589:
---------------------------------------

And the calling side encodes method names as part of a Writable Invocation so 
the interface it seems that order in the interface doesn't matter. 

https://github.com/apache/hbase/blob/trunk/src/main/java/org/apache/hadoop/hbase/ipc/Invocation.java#L99

This looks to be the case in 0.90 as well. 
https://github.com/apache/hbase/blob/0.90/src/main/java/org/apache/hadoop/hbase/ipc/HBaseRPC.java#L105

Here's where I need advice.  Should bump the protocol version in 
trunk/0.96/0.94 (HMasterInterface)? What should I do about the protocol version 
number released version to maintain compatibility -- specifically 0.90.x 
(HBaseRPCProtocolVersion) or 0.92.x (HMasterInterface)?  Keep it the same?  

                
> Add of the offline call to the Master Interface
> -----------------------------------------------
>
>                 Key: HBASE-5589
>                 URL: https://issues.apache.org/jira/browse/HBASE-5589
>             Project: HBase
>          Issue Type: Improvement
>          Components: hbck
>    Affects Versions: 0.90.6, 0.92.0, 0.94.0, 0.96.0
>            Reporter: Jonathan Hsieh
>            Assignee: Jonathan Hsieh
>
> Hbck from HBASE-5128 requires an offline method on the master to properly 
> cleanup state during certain assignment repair operations.  This will this 
> method will be added to recent and older versions of HBase.

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