我刚到Kafka，开始探索与样本程序。它以前工作时没有任何问题，但突然consumer.poll（）命令挂起，永远不会返回。谷歌建议检查服务器是否可以访问。生产者和消费者java代码在同一台机器上运行，生产者可以将记录发布到kafka，但消费者轮询方法挂起。
环境：
Kafka版本：1.1.0
客户端：java
在windows中的ubuntu docker容器中运行
zookeeper和两个代理服务器运行在同一个容器中
当我为客户端代码启用日志记录时，我看到以下异常：

2018-07-06 21:24:18 DEBUG NetworkClient:802 - [Consumer clientId=consumer-1, groupId=IDCS_Audit_Event_Consumer] Error connecting to node 4bdce773eb74:9095 (id: 2 rack: null)
java.io.IOException: Can't resolve address: 4bdce773eb74:9095
    at org.apache.kafka.common.network.Selector.doConnect(Selector.java:235)
    at org.apache.kafka.common.network.Selector.connect(Selector.java:214)
    .................
    .................

我不知道为什么消费者试图连接到 4bdce773eb74 即使我的代理服务器 192.168.99.100:9094,192.168.99.100:9095 . 以及我的完整消费代码：

final String BOOTSTRAP_SERVERS = "192.168.99.100:9094,192.168.99.100:9095";
        final Properties props = new Properties();
        props.put(ConsumerConfig.BOOTSTRAP_SERVERS_CONFIG, BOOTSTRAP_SERVERS);
        props.put(ConsumerConfig.GROUP_ID_CONFIG, "Event_Consumer");
        props.put(ConsumerConfig.KEY_DESERIALIZER_CLASS_CONFIG, LongDeserializer.class.getName());
        props.put(ConsumerConfig.VALUE_DESERIALIZER_CLASS_CONFIG, StringDeserializer.class.getName());
        KafkaConsumer<Long, String> consumer = new KafkaConsumer<Long, String>(props);
        TopicPartition tpLogin = new TopicPartition("login1", 0);
        TopicPartition tpLogout = new TopicPartition("logout1", 1);
        List<TopicPartition> tps = Arrays.asList(tpLogin, tpLogout);
        consumer.assign(tps);
        while (true) {
            final ConsumerRecords<Long, String> consumerRecords = consumer.poll(1000);
            if (consumerRecords.count()==0) {
                continue;
            }
            consumerRecords.forEach(record -> {
                System.out.printf("Consumer Record:(%d, %s, %d, %d)\n", record.key(), record.value(),
                        record.partition(), record.offset());
            });
            consumer.commitAsync();
            Thread.sleep(5000);
        }
    }

请帮忙解决这个问题。
如前所述，我有2个代理，比如broker-1和broker-2。如果我停止broker-1，那么上面的异常将不会被记录，但仍然是 poll() 方法未返回。如果我停止broker-1，将无限期地记录以下消息：

2018-07-07 11:31:24 DEBUG AbstractCoordinator:579 - [Consumer clientId=consumer-1, groupId=IDCS_Audit_Event_Consumer] Sending FindCoordinator request to broker 192.168.99.100:9094 (id: 1 rack: null)
2018-07-07 11:31:24 DEBUG AbstractCoordinator:590 - [Consumer clientId=consumer-1, groupId=IDCS_Audit_Event_Consumer] Received FindCoordinator response ClientResponse(receivedTimeMs=1530943284196, latencyMs=2, disconnected=false, requestHeader=RequestHeader(apiKey=FIND_COORDINATOR, apiVersion=1, clientId=consumer-1, correlationId=573), responseBody=FindCoordinatorResponse(throttleTimeMs=0, errorMessage='null', error=COORDINATOR_NOT_AVAILABLE, node=:-1 (id: -1 rack: null)))
2018-07-07 11:31:24 DEBUG AbstractCoordinator:613 - [Consumer clientId=consumer-1, groupId=IDCS_Audit_Event_Consumer] Group coordinator lookup failed: The coordinator is not available.
2018-07-07 11:31:24 DEBUG AbstractCoordinator:227 - [Consumer clientId=consumer-1, groupId=IDCS_Audit_Event_Consumer] Coordinator discovery failed, refreshing metadata

提前谢谢，索曼