记一次rocketmq推送消息失败的问题。
在springboot集成rocketmq完成后，启动项目时：1. Caused by: org.apache.rocketmq.client.exception.MQBrokerException: CODE: 14 DESC: service not available now, maybe disk full, CL: 0.90 CQ: 0.90 INDEX: 0.90, maybe your broker machine memory too small.这是由于安装brok.
