RocketMQ报No route info of this topic

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最近某天突然收到报警邮件,线上某个应用发送MQ消息报错,完整异常栈如下:

2018-04-08 18:17:44.126 | DubboServerHandler-10.141.6.116:20968-thread-172 | ERROR | com.xxx.node.application.mq.MqMessageProcessor | 发送MQ消息keys: 26 异常 
com.alibaba.rocketmq.client.exception.MQClientException: No route info of this topic, order 
See http://docs.aliyun.com/cn#/pub/ons/faq/exceptions&topic_not_existfor further details. 
        at com.alibaba.rocketmq.client.impl.producer.DefaultMQProducerImpl.sendDefaultImpl(DefaultMQProducerImpl.java:586) 
        at com.alibaba.rocketmq.client.impl.producer.DefaultMQProducerImpl.send(DefaultMQProducerImpl.java:1034) 
        at com.alibaba.rocketmq.client.impl.producer.DefaultMQProducerImpl.send(DefaultMQProducerImpl.java:1028) 
        at com.alibaba.rocketmq.client.producer.DefaultMQProducer.send(DefaultMQProducer.java:101)

去RocketMQ上控制台上查看该 topic是存在的,而且另外一个应用发送MQ是正常的,说明我们的RocketMQ集群是正常的。
然后我们比较了最近两次上线war包,发现少了fastjson依赖,rocketmq-client又依赖fastjson,感觉可能是这块出问题了。

于是 加上fastjson依赖:

        <!--fastjson-->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>fastjson</artifactId>
            <version>${fastjson.version}</version>
        </dependency>

重新部署,世界又恢复平静了。

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转载自blog.csdn.net/FX_SKY/article/details/79880802
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