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From "Ted Yu (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-7434) Use generics appropriately in RPCEngine and reduce casts, with fixing a related bug of breaking thread-safety in HConnectionManager
Date Fri, 04 Jan 2013 04:48:13 GMT

    [ https://issues.apache.org/jira/browse/HBASE-7434?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13543594#comment-13543594
] 

Ted Yu commented on HBASE-7434:
-------------------------------

Looking at https://reviews.apache.org/r/8761/diff/#index_header, I only see one revision.
Can you let us know what changed in latest patch ?

Please also attach patch to JIRA for QA run.

Thanks
                
> Use generics appropriately in RPCEngine and reduce casts, with fixing a related bug of
breaking thread-safety in HConnectionManager
> -----------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: HBASE-7434
>                 URL: https://issues.apache.org/jira/browse/HBASE-7434
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: Hiroshi Ikeda
>            Assignee: Hiroshi Ikeda
>            Priority: Minor
>         Attachments: HBASE-7434.patch
>
>
> In RpcEngine,
> {code}
>   VersionedProtocol getProxy(Class<? extends VersionedProtocol> protocol, ...)
> {code}
> should be
> {code}
>   <T extends VersionedProtocol> T getProxy(Class<T> protocol, ...)
> {code}
> Also, while removing casts I encountered a bug of the method HConnectionManager.HConnectionImplementation.getProtocol()
using broken logic just like double-checked locking for HashMap.

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