ExecutorService executor = newSingleThreadExecutor();
    Future<V> waiter =
        executor.submit(
            new Callable<V>() {
              @Override
              public V call() throws Exception {
                return input.get();
              }
            });

    try {
      return getUninterruptibly(waiter, timeout, unit);
    } catch (ExecutionException e) {

    ExecutorService executor = newSingleThreadExecutor();
    Future<V> waiter =
        executor.submit(
            new Callable<V>() {
              @Override
              public V call() throws Exception {
                return input.get();
              }
            });

    try {
      return getUninterruptibly(waiter, timeout, unit);
    } catch (ExecutionException e) {

    return new HashMap<>(capacity(expectedSize));
  }

  /**
   * Returns a capacity that is sufficient to keep the map from being resized as long as it grows no
   * larger than expectedSize and the load factor is ≥ its default (0.75).
   */
  static int capacity(int expectedSize) {
    if (expectedSize < 3) {
      checkNonnegative(expectedSize, "expectedSize");