@Override
  public int compareTo(OrcFileValueWrapper o) {
    if (stripeInformation.getOffset() < o.getStripeInformation().getOffset()) {
      return -1;
    } else if (stripeInformation.getOffset() > o.getStripeInformation().getOffset()) {
      return 1;
    } else {
      return 0;
    }
  }
Value for OrcFileMergeMapper. Contains stripe related information for the
current orc file that is being merged.
ql/src/java/org/apache/hadoop/hive/ql/io/orc/OrcFileValueWrapper.java