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https://issues.apache.org/jira/browse/HADOOP-6132?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12732327#action_12732327
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Raghu Angadi commented on HADOOP-6132:
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+1 for the fix.
There is another instance of use of getDelaringClass() in the same file (though
that part of the code is not used except in some tests).
We need to fix that.
> RPC client opens an extra connection for VersionedProtocol
> ----------------------------------------------------------
>
> Key: HADOOP-6132
> URL: https://issues.apache.org/jira/browse/HADOOP-6132
> Project: Hadoop Common
> Issue Type: Bug
> Components: ipc
> Reporter: Kan Zhang
> Assignee: Kan Zhang
> Attachments: 1.patch, 2.patch
>
>
> RPC client caches connections per protocol. However, since all of our real
> protocols are subclasses of VersionedProtocol, a bug in the implementation
> makes the client opens an extra connection just for the VersionedProtocol,
> which is not needed.
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