GitHub user PAYNE1Z added a comment to the discussion: 5.1 版本controller 无法自动切换： org.apache.rocketmq.client.exception.MQBrokerException: CODE: 2012 DESC: The broker has not master, and this new registered broker can't not be elected as master
（1）下线主备Broker （2）利用cleanBrokerData命令清除Controller中该组Broker元数据 （3）删除主备Broker下的文件～/store/epochFileCheckpoint和epochFileCheckpoint.bak （4）Broker重新上线（尽量保证旧的主备关系，先主后备上线） 参考 #6354 这个操作恢复了 可能是因为我更改过 epochFileCheckpoint 目录 GitHub link: https://github.com/apache/rocketmq/discussions/6685#discussioncomment-5800705 ---- This is an automatically sent email for dev@rocketmq.apache.org. To unsubscribe, please send an email to: dev-unsubscr...@rocketmq.apache.org
