code: private static List<String> getNamedOutputsList(JobContext job) {
  		List<String> names = new ArrayList<String>();
  		StringTokenizer st = new StringTokenizer(job.getConfiguration().get(MULTIPLE_OUTPUTS, ""), " ");
  		while(st.hasMoreTokens()) {
  			names.add(st.nextToken());
  		}
  		return names;
  	}
docs: Returns list of channel names.