Results 2 comments of xjf

判断error,返回状态425,最终都成功了

![微信图片_20221110153843](https://user-images.githubusercontent.com/15045084/201035504-869dd1ea-bb28-4241-b9c4-5b4cb476c4bb.png) ![微信图片_20221110153925](https://user-images.githubusercontent.com/15045084/201035522-b6c6a166-6255-41ee-ab14-c37a494893d2.png) 模拟高并发下的分布式事务,同时修改一条数据,barrier.MongoCall会返回WriteConflict异常,直接用mongo-driver没有出现过异常