public static boolean canWrapForLlap(Class<? extends InputFormat> clazz, boolean checkVector) {
    return LlapWrappableInputFormatInterface.class.isAssignableFrom(clazz) &&
        (!checkVector || BatchToRowInputFormat.class.isAssignableFrom(clazz));
  }
The position of the first byte in the file to process.
ql/src/java/org/apache/hadoop/hive/ql/io/HiveInputFormat.java