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.


    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],


> 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 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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