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From "Daryn Sharp (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-9683) Wrap IpcConnectionContext in RPC headers
Date Mon, 15 Jul 2013 15:10:49 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-9683?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13708531#comment-13708531
] 

Daryn Sharp commented on HADOOP-9683:
-------------------------------------

Please let us if you are in the process of reviewing.  The patch is almost 2w old and well
tested including manual Kerberos testing. I'd like to commit if there are no objections voiced
by this afternoon.  We can file jiras for any issues that may be found by review?
                
> Wrap IpcConnectionContext in RPC headers
> ----------------------------------------
>
>                 Key: HADOOP-9683
>                 URL: https://issues.apache.org/jira/browse/HADOOP-9683
>             Project: Hadoop Common
>          Issue Type: Sub-task
>          Components: ipc
>            Reporter: Luke Lu
>            Assignee: Daryn Sharp
>            Priority: Blocker
>         Attachments: HADOOP-9683.patch
>
>
> After HADOOP-9421, all RPC exchanges (including SASL) are wrapped in RPC headers except
IpcConnectionContext, which is still raw protobuf, which makes request pipelining (a desirable
feature for things like HDFS-2856) impossible to achieve in a backward compatible way. Let's
finish the job and wrap IpcConnectionContext with the RPC request header with the call id
of SET_IPC_CONNECTION_CONTEXT. Or simply make it an optional field in the RPC request header
that gets set for the first RPC call of a given stream.

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