RocketMQ No route info of this topic问题看完手撕面试官

Exception in thread "main" org.apache.rocketmq.client.exception.MQClientException: No route info of this topic, topic_test_one_way_3See http://rocketmq.apache.org/docs/faq/ for further details. at org.apache.rocketmq.client.impl.producer.DefaultMQProducerImpl.sendDefaultImpl(DefaultMQProducerImpl.java:656) at org.apache.rocketmq.client.impl.producer.DefaultMQProducerImpl.sendOneway(DefaultMQProducerImpl.java:927) at org.apache.rocketmq.client.producer.DefaultMQProducer.sendOneway(DefaultMQProducer.java:354) at com.liliming.rocketmq.OnewayProducer.main(OnewayProducer.java:22)

缘故原由:

经排查创造是由于系统默认的一个 Topic（TBW102）被删掉了，默认开启许可自动创建 Topic 主题的情形下，brocker 启动时会自动创建一个名称为 TBW102 的默认 Topic，生产这便是利用这个 Topic 来进行自动创建其他 topic 的。

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