@Override
  public int hashCode() {
    int result = 17;
    result = 31 * result + (int)(writeId ^ (writeId >>> 32));
    result = 31 * result + bucketId;
    result = 31 * result + (int)(rowId ^ (rowId >>> 32));
    return result;
  }
What was the original row id for the last row?
@return the row id
ql/src/java/org/apache/hadoop/hive/ql/io/RecordIdentifier.java