老师：
在做测试时，在生产消息发送后返回COMMIT_MESSAGE状态时，打印发送成功的日志，在消费成功，扣减库存后，打印消费成功的日志。
===========rocketMQ transaction producer success ===========
===========rocketMQ transaction producer success ===========
===========rocketMQ transaction producer success ===========
===========rocketMQ transaction producer success ===========
===========rocketMQ consumer success =============
===========rocketMQ transaction producer success ===========
===========rocketMQ consumer success =============
===========rocketMQ transaction producer success ===========
===========rocketMQ consumer success =============
===========rocketMQ transaction producer success ===========
===========rocketMQ consumer success =============
===========rocketMQ transaction producer success ===========
===========rocketMQ transaction producer success ===========
===========rocketMQ consumer success =============
===========rocketMQ transaction producer success ===========
===========rocketMQ consumer success =============

一共下了10单，从打印的日志中看，消息生产了10条，但是消费端消费了6条，有4条并没有消费，stock_log表中记录了10条status为2的数据，item_stock表中，stock剩于94，（总库存100，redis中也为100），redis中剩于库存90。我的问题是，没有消费的4条数据，是丢了吗？还是还在消息队列中？