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Date: Wed, 15 Aug 2012 10:21:38 +1100 (NCT)
From: "Zhihong Ted Yu (JIRA)" <jira@apache.org>
To: issues@hbase.apache.org
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Subject: [jira] [Commented] (HBASE-6340) HBase RPC does not allow protocol
 extension with common interfaces.
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    [ https://issues.apache.org/jira/browse/HBASE-6340?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13434623#comment-13434623 ] 

Zhihong Ted Yu commented on HBASE-6340:
---------------------------------------

WritableRpcEngine.java would go away through HBASE-6414

Please take a look at the patch in that JIRA and update your patch accordingly.

Thanks
                
> HBase RPC does not allow protocol extension with common interfaces.
> -------------------------------------------------------------------
>
>                 Key: HBASE-6340
>                 URL: https://issues.apache.org/jira/browse/HBASE-6340
>             Project: HBase
>          Issue Type: Bug
>          Components: coprocessors, regionserver
>    Affects Versions: 0.92.0
>            Reporter: Konstantin Shvachko
>            Assignee: Konstantin Shvachko
>         Attachments: RPCInvocation.patch
>
>
> HBase RPC fails if MyProtocol extends an interface, which is not a VersionedProtocol even if MyProtocol also directly extends VersionedProtocol. The reason is that rpc Invocation uses Method.getDeclaringClass(), which returns the interface class rather than the class of MyProtocol.

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