Jdk8 ConcurrentHashMap的死循环bug

	public static void main(String[] args) {
        ConcurrentHashMap<String, Integer> map = new ConcurrentHashMap<>(16);
        map.computeIfAbsent(
                "AaAa",
                key -> {
                    return map.computeIfAbsent(
                            "BBBB",
                            key2 -> 42);
                }
        );
        System.out.println("程序完成");
    }