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Posted to common-dev@hadoop.apache.org by "Konstantin Shvachko (JIRA)" <ji...@apache.org> on 2012/08/14 19:59:38 UTC

[jira] [Resolved] (HADOOP-8558) Hadoop RPC does not allow protocol extension with common interfaces.

     [ https://issues.apache.org/jira/browse/HADOOP-8558?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Konstantin Shvachko resolved HADOOP-8558.
-----------------------------------------

       Resolution: Not A Problem
    Fix Version/s: 3.0.0
         Assignee: Konstantin Shvachko

Resolving as not a problem.
                
> Hadoop RPC does not allow protocol extension with common interfaces.
> --------------------------------------------------------------------
>
>                 Key: HADOOP-8558
>                 URL: https://issues.apache.org/jira/browse/HADOOP-8558
>             Project: Hadoop Common
>          Issue Type: Bug
>    Affects Versions: 2.0.0-alpha
>            Reporter: Konstantin Shvachko
>            Assignee: Konstantin Shvachko
>             Fix For: 3.0.0
>
>         Attachments: TestProtocolExtension.java, TestProtocolExtension.java
>
>
> Hadoop RPC fails if MyProtocol extends an interface, which is not a VersionedProtocol even if MyProtocol extends also VersionedProtocol. The reason is that Invocation uses Method.getDeclaringClass(), which returns the interface class rather than the class of MyProtocol.
> This is incompatible with former versions.

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