We've found that much of the Hadoop samples assume that running is being done form a cluster node, and that the connection information can be gleaned directly from a configuration object. However, we always run our client from a remote computer, and our users must manually specify the NN/RM addresses and ports. We've found this varies maddeningly between distros and especially on hosted virtual implementations. Getting the wrong port results in various inscrutable errors with red-herring messages about security. Is there a prescribed way to get the correct connection information more easily, like from a web API (where at least we'd only need one address and port)?
john
