TestCallable secondCallable = new TestCallable(SettableFuture.create());
    Future<?> second = serializer.submitAsync(secondCallable, directExecutor());
    assertThat(secondCallable.called).isFalse();
    assertThat(second.toString()).contains(secondCallable.toString());
    firstFuture.set(null);
    assertThat(second.toString()).contains(secondCallable.future.toString());
  }

Isso foi alterado no FastAPI 0.106.0 com a intenção de não manter recursos enquanto se espera a response percorrer a rede.

/// tip | Dica

        ByteBuffer buffer = ByteBuffer.allocate(200);
        buffer.order(ByteOrder.LITTLE_ENDIAN);

        // First notification with nextEntryOffset pointing to second
        int secondOffset = 48;
        buffer.putInt(secondOffset); // nextEntryOffset to second entry
        buffer.putInt(FileNotifyInformation.FILE_ACTION_ADDED);
        String fileName1 = "first.txt";
        byte[] fileNameBytes1 = fileName1.getBytes("UTF-16LE");

      if (first == null) {
        actionWhenFirstParamIsNull.act();
      }
      if (second == null) {
        actionWhenSecondParamIsNull.act();
      }
    }

    /** Two-arg method with no Nullable params. */
    public void normalNormal(String first, Integer second) {
      reactToNullParameters(first, second);
    }

// timestamp as used in S3 Select
func FormatSQLTimestamp(t time.Time) string {
	_, zoneOffset := t.Zone()
	hasZone := zoneOffset != 0
	hasFracSecond := t.Nanosecond() != 0
	hasSecond := t.Second() != 0
	hasTime := t.Hour() != 0 || t.Minute() != 0
	hasDay := t.Day() != 1
	hasMonth := t.Month() != 1

	switch {
	case hasFracSecond:
		return t.Format(layoutNanosecond)
	case hasSecond:

		config.Producer.CompressionLevel = args.Producer.CompressionLevel
	}

	config.Net.ReadTimeout = (5 * time.Second)
	config.Net.DialTimeout = (5 * time.Second)
	config.Net.WriteTimeout = (5 * time.Second)
	config.Metadata.Retry.Max = 1
	config.Metadata.Retry.Backoff = (1 * time.Second)
	config.Metadata.RefreshFrequency = (15 * time.Minute)

	target.config = config

	brokers := []string{}
	for _, broker := range args.Brokers {

		Transport: &http.Transport{
			Proxy: http.ProxyFromEnvironment,
			DialContext: (&net.Dialer{
				Timeout:   3 * time.Second,
				KeepAlive: 5 * time.Second,
			}).DialContext,
			ResponseHeaderTimeout: 3 * time.Second,
			TLSHandshakeTimeout:   3 * time.Second,
			ExpectContinueTimeout: 3 * time.Second,
			TLSClientConfig: &tls.Config{
				RootCAs: args.rootCAs,
			},
			// Go net/http automatically unzip if content-type is

		WriteBufferSize:       WriteBufferSize,
		ReadBufferSize:        ReadBufferSize,
		IdleConnTimeout:       15 * time.Second,
		ResponseHeaderTimeout: 15 * time.Minute, // Conservative timeout is the default (for MinIO internode)
		TLSHandshakeTimeout:   10 * time.Second,
		TLSClientConfig:       &tlsClientConfig,
		ForceAttemptHTTP2:     s.EnableHTTP2,
		// Go net/http automatically unzip if content-type is

	if !drwm1.GetRLock(ctx1, cancel1, id, source, Options{Timeout: time.Second}) {
		panic("Failed to acquire read lock")
	}
	// fmt.Println("1st read lock acquired, waiting...")

	drwm2 := NewDRWMutex(ds, "simplelock")
	ctx2, cancel2 := context.WithCancel(t.Context())
	if !drwm2.GetRLock(ctx2, cancel2, id, source, Options{Timeout: time.Second}) {
		panic("Failed to acquire read lock")
	}

    TestCallable secondCallable = new TestCallable(SettableFuture.create());
    Future<?> second = serializer.submitAsync(secondCallable, directExecutor());
    assertThat(secondCallable.called).isFalse();
    assertThat(second.toString()).contains(secondCallable.toString());
    firstFuture.set(null);
    assertThat(second.toString()).contains(secondCallable.future.toString());
  }