private void init() {
    try {
      final byte[] bytes = FileUtil.loadFileBytes(myFile);
      final DataInputStream dis = new DataInputStream(new UnsyncByteArrayInputStream(bytes));
      final int size = dis.readInt();
      for (int i = 0; i < size; i++) {
        final KeyWrapper<K> keyWrapper = new KeyWrapper<>(myKeyDescriptor, myKeyDescriptor.read(dis));
        final V value = myValueExternalizer.read(dis);
        myMap.put(keyWrapper, value);
      }
    } catch (FileNotFoundException ignore) {
    } catch (IOException e) {
      LOG.error(e);
    }
  }
private void init()