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From "Konstantin Shvachko (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-6340) HBase RPC does not allow protocol extension with common interfaces.
Date Wed, 15 Aug 2012 00:31:38 GMT

    [ https://issues.apache.org/jira/browse/HBASE-6340?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13434694#comment-13434694
] 

Konstantin Shvachko commented on HBASE-6340:
--------------------------------------------

Looked at HBASE-6414 patch. WritableRpcEngine will go away with or without my change. The
important thing is that the test in this jira will guarantee that the targeted functionality
is preserved.
Also committing this now will make it easy to reuse the patch for back porting into earlier
versions, if that will be desired.
                
> 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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