Object reference in Micrometer metrics prevent GC from reclaiming Session instances

    public static void main(String[] args) throws InterruptedException {
        Semaphore sema = new Semaphore(20);
        for (int i = 0; i < 10000; i++) {
            new Thread(() -> {
                try {
                    sema.acquire();
                    try(CqlSession session = CqlSession.builder()
                            .withCloudSecureConnectBundle(Paths.get("bundle.zip"))
                            .withAuthCredentials("token", "<some token here>")
                            .build()) {
                        // Do stuff
                    }
                } catch (Exception e) {
                    System.out.println(e);
                } finally {
                    sema.release();
                }
            }).start();
        }
    }