code: public static List<String> getNamedOutputsList(JobConf conf) {
      List<String> names = new ArrayList<String>();
      StringTokenizer st = new StringTokenizer(conf.get(NAMED_OUTPUTS, ""), " ");
      while (st.hasMoreTokens()) {
        names.add(st.nextToken());
      }
      return names;
    }
docs: Returns list of channel names.
  
  @param conf job conf
  @return List of channel Names