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https://issues.apache.org/jira/browse/HADOOP-6132?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jitendra Nath Pandey updated HADOOP-6132:
-----------------------------------------

    Attachment: HADOOP-6132-0_20.1.patch

Patch for hadoop 20 added.

> 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
>             Fix For: 0.21.0
>
>         Attachments: 1.patch, 2.patch, HADOOP-6132-0_20.1.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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