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From "Eli Collins (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-8198) Support multiple network interfaces
Date Wed, 04 Apr 2012 17:17:24 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-8198?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13246487#comment-13246487
] 

Eli Collins commented on HADOOP-8198:
-------------------------------------

I should clarify that host-level bonding works today as long as the IP of bond is where IPC
comes from as well, eg if a DN is configured only to listen on the IP of the bond. It breaks
if the DN listens on all interfaces and does IPC to the NN on an interface that's not the
bond. Check out specifics in HDFS-3146.
                
> Support multiple network interfaces
> -----------------------------------
>
>                 Key: HADOOP-8198
>                 URL: https://issues.apache.org/jira/browse/HADOOP-8198
>             Project: Hadoop Common
>          Issue Type: New Feature
>          Components: io, performance
>            Reporter: Eli Collins
>            Assignee: Eli Collins
>         Attachments: MultipleNifsv1.pdf, MultipleNifsv2.pdf
>
>
> Hadoop does not currently utilize multiple network interfaces, which is a common user
request, and important in enterprise environments. This jira covers a proposal for enhancements
to Hadoop so it better utilizes multiple network interfaces. The primary motivation being
improved performance, performance isolation, resource utilization and fault tolerance. The
attached design doc covers the high-level use cases, requirements, a proposal for trunk/0.23,
discussion on related features, and a proposal for Hadoop 1.x that covers a subset of the
functionality of the trunk/0.23 proposal.

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