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https://issues.apache.org/jira/browse/HADOOP-9820?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13735860#comment-13735860
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Hudson commented on HADOOP-9820:
--------------------------------

FAILURE: Integrated in Hadoop-Hdfs-trunk #1487 (See 
[https://builds.apache.org/job/Hadoop-Hdfs-trunk/1487/])
HADOOP-9820. RPCv9 wire protocol is insufficient to support multiplexing. 
Contributed by Daryn Sharp. (jitendra: 
http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1512091)
* /hadoop/common/trunk/hadoop-common-project/hadoop-common/CHANGES.txt
* 
/hadoop/common/trunk/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/ipc/Client.java
* 
/hadoop/common/trunk/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/ipc/Server.java
* 
/hadoop/common/trunk/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/security/SaslRpcClient.java
* 
/hadoop/common/trunk/hadoop-common-project/hadoop-common/src/main/proto/RpcHeader.proto

                
> 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
>             Fix For: 3.0.0, 2.1.0-beta, 2.3.0, 2.1.1-beta
>
>         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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