Commits on Oct 29, 2018

1. Use NM_HOST to determine hostname …

   Some clusters have infiniband enabled, which may get picked up by
   `InetAddress` when determining the application-master hostname/IP.
   Infiniband is not currently supported by gRPC, so this would result in
   failures. Instead of trying to more robustly determine the IP for a
   supported network interface, we rely on the `NM_HOST` environment
   variable, which is always set and must resolve correctly on all nodes
   for hadoop to properly work.

   

   jcrist committed Oct 29, 2018
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