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Date: Thu, 8 Aug 2013 21:56:48 +0000 (UTC)
From: "Sanjay Radia (JIRA)" <jira@apache.org>
To: common-issues@hadoop.apache.org
Message-ID: <JIRA.12661292.1375402591805.28454.1375999008248@arcas>
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Subject: [jira] [Commented] (HADOOP-9820) RPCv9 wire protocol is
 insufficient to support multiplexing
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    [ https://issues.apache.org/jira/browse/HADOOP-9820?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13734064#comment-13734064 ] 

Sanjay Radia commented on HADOOP-9820:
--------------------------------------

+1 with a minor nit in java comment.
 // decode message if it's SASL wrapped
should be 
// Must be SASL wrapped, verify and decode.
                
> RPCv9 wire protocol is insufficient to support multiplexing
> -----------------------------------------------------------
>
>                 Key: HADOOP-9820
>                 URL: https://issues.apache.org/jira/browse/HADOOP-9820
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: ipc, security
>    Affects Versions: 3.0.0, 2.1.0-beta
>            Reporter: Daryn Sharp
>            Assignee: Daryn Sharp
>            Priority: Blocker
>         Attachments: HADOOP-9820.patch, HADOOP-9820.patch
>
>
> RPCv9 is intended to allow future support of multiplexing.  This requires all wire messages to be tagged with a RPC header so a demux can decode and route the messages accordingly.
> RPC ping packets and SASL QOP wrapped data is known to not be tagged with a header.

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