@Override
  public void init(ByteArrayRef bytes, int start, int length) {
    assert (2 == length);
    data.set(LazyBinaryUtils.byteArrayToShort(bytes.getData(), start));
  }
LazyBinaryObject for short which takes two bytes.
serde/src/java/org/apache/hadoop/hive/serde2/lazybinary/LazyBinaryShort.java