问题
Pretty much the title, but I realize that there are a lot of different edge cases here, but I am somehow not able to find a credible source on this.
回答1:
If co-ordinator goes down mid request , cassandra drivers are designed to handle such case with retry policy which you can configure.
More Details
来源：https://stackoverflow.com/questions/37722828/what-happens-if-a-coordinator-node-goes-down-during-a-write-in-apache-cassandra