Jobtracker API error - Call to localhost/127.0.0.1:50030 failed on local exception: java.io.EOFException

Try the port number listed in your $HADOOP_HOME/conf/mapred-site.xml under the mapred.job.tracker property. Here's my pseudo mapred-site.xml conf

<property>
    <name>mapred.job.tracker</name>
    <value>localhost:9001</value>
</property>

If you look at the JobTracker.getAddress(Configuration) method, you can see it uses this property if you don't explicitly specify the jobtracker host / port:

public static InetSocketAddress getAddress(Configuration conf) {
  String jobTrackerStr =
    conf.get("mapred.job.tracker", "localhost:8012");
  return NetUtils.createSocketAddr(jobTrackerStr);
}