@Override
  public String toString() {
    String nameStr = Joiner.on(",").join(fieldNames);
    String valueStr = Joiner.on(",").useForNull("null").join(fieldValues);
    return "[Names:{" + nameStr + "} Values:{" + valueStr + "}]";
  }
Get the value of the field corresponding to the field name.
@param name Name of the field.
@return returns the value of the field.
samza-api/src/main/java/org/apache/samza/sql/SamzaSqlRelRecord.java