@Override
    public long getLength() {
      long r = 0;
      try {
        r = inputSplit.getLength();
      } catch (Exception e) {
        throw new RuntimeException(e);
      }
      return r;
    }
The position of the first byte in the file to process.
ql/src/java/org/apache/hadoop/hive/ql/io/HiveInputFormat.java