@Override
  public boolean equals(Object o) {
    if (o instanceof AccumuloHiveRow) {
      AccumuloHiveRow other = (AccumuloHiveRow) o;
      if (null == rowId) {
        if (null != other.rowId) {
          return false;
        }
      } else if (!rowId.equals(other.rowId)) {
        return false;
      }

      return tuples.equals(other.tuples);
    }

    return false;
  }
@return byte [] value for first tuple containing fam and qual or null if no match.
accumulo-handler/src/java/org/apache/hadoop/hive/accumulo/AccumuloHiveRow.java