complone commented on issue #5055:
URL: https://github.com/apache/rocketmq/issues/5055#issuecomment-1246335220
In fact, to solve the problem of automatic creation (autoCreateTopicEnable)
from RocketMQ 4.3.0, Rocketmq provides a topicKey to specify the default topic,
as shown in the following code:
```
DefaultMQProducer producer = new
DefaultMQProducer("please_rename_unidcque_group_name");
//Set the key value of automatic topic creation
producer.setCreateTopicKey("AUTO_CREATE_TOPIC_KEY");
```
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