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From "ANANDA G B (Jira)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-12431) NameNode should bind on both IPv6 and IPv4 if running on dual-stack machine and IPv6 enabled
Date Thu, 22 Apr 2021 10:29:00 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-12431?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17327260#comment-17327260
] 

ANANDA G B commented on HADOOP-12431:
-------------------------------------

[~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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