RocketMq Exception "connect to <:10909> failed"问题
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之前使用RocketMQ,遇到过“connect to <:10909> failed”问题。最近使用的时候又遇到了。这里总结一下。
1、代码描述
2、异常描述
com.alibaba.rocketmq.client.exception.MQClientException: Send [3] times, still failed, cost [6542]ms, Topic: TopicTest, BrokersSent: [localhost-241, localhost-241, localhost-241]...Caused by: com.alibaba.rocketmq.remoting.exception.RemotingConnectException: connect to <xxx.xxx.xxx.xxx:10909> failed
3、消息发送失败原因以及解决办法
原因分析:我第一次使用的是rocketmq-client-3.4.6,第二次使用的是rocketmq-client-3.5.7,都出现了这个问题。但是原来使用rocketmq-client-3.2.5却不会出现这个问题。
(1)目前这种写法Rocket默认开启了VIP通道,VIP通道端口为10911-2=10909。若Rocket服务器未启动端口10909,则报connect to <:10909> failed。
(2)解决方式:增加一行代码
producer.setVipChannelEnabled(false);
4、消费者接收不到消息
(1)同理,如果消费者能够启动成功,但是没有接收到消息,原因可能同上。
(2)解决方式:增加一行代码
consumer.setVipChannelEnabled(false);
参考:
https://my.oschina.net/bingoding/blog/685079?p=1
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