zookeeper 的节点删除不了？

java 客户端用的 curator 加了监听之后节点删除不了 修改依赖到 2.4.2 就可以 代码如下

	<dependency>
            <groupId>org.apache.curator</groupId>
            <artifactId>curator-framework</artifactId>
            <version>4.2.0</version>
        </dependency>
        <dependency>
            <groupId>org.apache.curator</groupId>
            <artifactId>curator-recipes</artifactId>
            <version>4.2.0</version>
        </dependency>

public static void main(String[] args) throws Exception {
        CuratorFramework client = CuratorFrameworkFactory
                .builder()
                .connectString("192.168.215.128:2181")
                .sessionTimeoutMs(5000)
                .retryPolicy(new ExponentialBackoffRetry(1000, 3))
                .build();
        client.start();
        
        String path = "/zk-book";

        PathChildrenCache cache = new PathChildrenCache(client, path, true);
        cache.start(PathChildrenCache.StartMode.POST_INITIALIZED_EVENT);
        cache.getListenable().addListener((client1, event) -> {
            switch (event.getType()) {
                case CHILD_ADDED:
                    System.out.println("CHILD_ADDED," + event.getData().getPath());
                    break;
                case CHILD_UPDATED:
                    System.out.println("CHILD_UPDATED," + event.getData().getPath());
                    break;
                case CHILD_REMOVED:
                    System.out.println("CHILD_REMOVED," + event.getData().getPath());
                    break;
                default:
                    break;
            }
        });

        client.create()
                .withMode(CreateMode.PERSISTENT)
                .forPath(path);

        Thread.sleep(2000);

        client.delete().deletingChildrenIfNeeded().forPath(path);
        System.out.println("done");
        
        Thread.sleep(Integer.MAX_VALUE);
    }