code: public static JavaRDD<List<Writable>> normalize(Schema schema, JavaRDD<List<Writable>> data, double min,
                      double max) {
          DataRowsFacade frame = DataFrames.toDataFrame(schema, data);
          return DataFrames.toRecords(normalize(frame, min, max, Collections.<String>emptyList())).getSecond();
      }
docs: Scale based on min,max
  
  @param schema the schema of the data to scale
  @param data   the data to sclae
  @param min    the minimum value
  @param max    the maximum value
  @return the normalized ata