private LazyBinaryPrimitive<?, ?> uncheckedGetKey(int index) {
    if (keyIsNull[index]) {
      return null;
    }
    if (!keyInited[index]) {
      keyInited[index] = true;
      if (keyObjects[index] == null) {
        // Keys are always primitive
        keyObjects[index] = LazyBinaryFactory
            .createLazyBinaryPrimitiveClass((PrimitiveObjectInspector) ((MapObjectInspector) oi)
            .getMapKeyObjectInspector());
      }
      keyObjects[index].init(bytes, keyStart[index], keyLength[index]);
    }
    return keyObjects[index];
  }
Get the key object with the index without checking parsed.

@param index
         The index into the array starting from 0
serde/src/java/org/apache/hadoop/hive/serde2/lazybinary/LazyBinaryMap.java