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https://issues.apache.org/jira/browse/HADOOP-12431?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17327260#comment-17327260
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ANANDA G B commented on HADOOP-12431:
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[~eclark] We are also working on NameNode to bind on both IPv6 and IPv4 if
running on dual-stack machine and IPv6 enabled. If you have updated any
document it will be helpful, can you please share? If you have done any further
analysis can you please share.
> NameNode should bind on both IPv6 and IPv4 if running on dual-stack machine
> and IPv6 enabled
> --------------------------------------------------------------------------------------------
>
> Key: HADOOP-12431
> URL: https://issues.apache.org/jira/browse/HADOOP-12431
> Project: Hadoop Common
> Issue Type: Sub-task
> Affects Versions: 2.7.1
> Reporter: Nate Edel
> Priority: Major
> Labels: ipv6
>
> NameNode works properly on IPv4 or IPv6 single stack (assuming in the latter
> case that scripts have been changed to disable preferIPv4Stack, and dependent
> on the client/data node fix in HDFS-8078). On dual-stack machines, NameNode
> listens only on IPv4 (even ignoring preferIPv6Addresses being set.)
> Our initial use case for IPv6 is IPv6-only clusters, but ideally we'd support
> binding to both the IPv4 and IPv6 machine addresses so that we can support
> heterogenous clusters (some dual-stack and some IPv6-only machines.)
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