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https://issues.apache.org/jira/browse/HADOOP-6210?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12907000#action_12907000
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Allen Wittenauer commented on HADOOP-6210:
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No, no, it is actually better to bind to a specific IP address.

I just mention that I was thinking of nic aliases when I wrote that because 
most of the non-hacky HA solutions I'm aware of use real, functional aliases to 
perform the ip movement from machine to machine.

> Bind Hadoop RPC outgoing to a specific nic
> ------------------------------------------
>
>                 Key: HADOOP-6210
>                 URL: https://issues.apache.org/jira/browse/HADOOP-6210
>             Project: Hadoop Common
>          Issue Type: New Feature
>    Affects Versions: 0.20.0
>            Reporter: Allen Wittenauer
>
> In environments with multiple interfaces on a machine, it would be useful to 
> be able to bind outgoing traffic to specific interfaces rather than letting 
> the outbound be picked at random.  This is especially important for things 
> like Solaris IPMP.

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