Module Mapred_config

         netplex {
           ...
           namenodes {
             clustername = "cluster1";
             node { addr = "hostname:port" }
             node { addr = "hostname:port" }
             ...
           }
           mapred {
             node { addr = "hostname" }
             node { addr = "hostname" }
             ...
             port = 1234;
             tmpdir = "/somewhere";
             load_limit = 8.1;
           }
        }