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From "Arpit Agarwal (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-1994) Expose YARN/MR endpoints on multiple interfaces
Date Tue, 29 Jul 2014 05:29:42 GMT

    [ https://issues.apache.org/jira/browse/YARN-1994?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14077401#comment-14077401
] 

Arpit Agarwal commented on YARN-1994:
-------------------------------------

+1 from me module one question. Why is the following logic only needed for ContainerManagerImpl.java?
I probably knew this but can't recall now.

{code}

    InetSocketAddress connectAddress;
    String connectHost = conf.getTrimmed(YarnConfiguration.NM_ADDRESS);
    if (connectHost == null || connectHost.isEmpty()) {
      // Get hostname and port from the listening endpoint.
      connectAddress = NetUtils.getConnectAddress(server);
    } else {
      // Combine the configured hostname with the port from the listening
      // endpoint. This gets the correct port number if the configuration
      // specifies an ephemeral port (port number 0).
      connectAddress = NetUtils.getConnectAddress(
          new InetSocketAddress(connectHost.split(":")[0],
                                server.getListenerAddress().getPort()));
    }
{code}

Thanks.

> Expose YARN/MR endpoints on multiple interfaces
> -----------------------------------------------
>
>                 Key: YARN-1994
>                 URL: https://issues.apache.org/jira/browse/YARN-1994
>             Project: Hadoop YARN
>          Issue Type: Improvement
>          Components: nodemanager, resourcemanager, webapp
>    Affects Versions: 2.4.0
>            Reporter: Arpit Agarwal
>            Assignee: Craig Welch
>         Attachments: YARN-1994.0.patch, YARN-1994.1.patch, YARN-1994.11.patch, YARN-1994.11.patch,
YARN-1994.2.patch, YARN-1994.3.patch, YARN-1994.4.patch, YARN-1994.5.patch, YARN-1994.6.patch,
YARN-1994.7.patch
>
>
> YARN and MapReduce daemons currently do not support specifying a wildcard address for
the server endpoints. This prevents the endpoints from being accessible from all interfaces
on a multihomed machine.
> Note that if we do specify INADDR_ANY for any of the options, it will break clients as
they will attempt to connect to 0.0.0.0. We need a solution that allows specifying a hostname
or IP-address for clients while requesting wildcard bind for the servers.
> (List of endpoints is in a comment below)



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