code: public static void addInputPaths(JobConf conf, String commaSeparatedPaths) {
      for (String str : getPathStrings(commaSeparatedPaths)) {
        addInputPath(conf, new Path(str));
      }
    }
docs: Add the given comma separated paths to the list of inputs for
  the map-reduce job.
  
  @param conf The configuration of the job
  @param commaSeparatedPaths Comma separated paths to be added to
  the list of inputs for the map-reduce job.