Polish alibaba/spring-cloud-alibaba#1727 : rollback rocketmq-spring-boot-starter
<curator.version>4.0.1</curator.version>
<!-- Apache RocketMQ -->
- <rocketmq.starter.version>2.1.1</rocketmq.starter.version>
+ <rocketmq.starter.version>2.0.2</rocketmq.starter.version>
<!-- Maven Plugin Versions -->
<maven-compiler-plugin.version>3.7.0</maven-compiler-plugin.version>
