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https://issues.apache.org/jira/browse/HADOOP-9421?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13692480#comment-13692480
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Luke Lu commented on HADOOP-9421:
---------------------------------

I do recognize what server id can enable: distinct services on the same 
ip:port, a la the HTTP host header and SSL server name indication. It's an 
"insane" solution for HA because HA will not be seamless due the race condition 
I mentioned. It's fixable with more negotiate rounds with more logic though :)


                
> Convert SASL to use ProtoBuf and provide negotiation capabilities
> -----------------------------------------------------------------
>
>                 Key: HADOOP-9421
>                 URL: https://issues.apache.org/jira/browse/HADOOP-9421
>             Project: Hadoop Common
>          Issue Type: Sub-task
>    Affects Versions: 2.0.3-alpha
>            Reporter: Sanjay Radia
>            Assignee: Daryn Sharp
>            Priority: Blocker
>             Fix For: 3.0.0, 2.1.0-beta, 2.2.0
>
>         Attachments: HADOOP-9421.patch, HADOOP-9421.patch, HADOOP-9421.patch, 
> HADOOP-9421.patch, HADOOP-9421.patch, HADOOP-9421.patch, HADOOP-9421.patch, 
> HADOOP-9421.patch, HADOOP-9421.patch, HADOOP-9421-v2-demo.patch
>
>


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