@Override
  public boolean equals(Object other) {
    if(other == this) {
      return true;
    }
    if (other == null || other.getClass() != getClass()) {
      return false;
    }
    RecordIdentifier oth = (RecordIdentifier) other;
    return oth.writeId == writeId &&
        oth.bucketId == bucketId &&
        oth.rowId == rowId;
  }
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