[转载] cassandra Unable to complete request: one or more nodes were unavailable

今天碰到的问题跟这个一模一样,特地转过来记录一下 

https://support.datastax.com/hc/en-us/articles/204893189-CQL-query-results-in-Unable-to-complete-request-one-or-more-nodes-were-unavailable-https://support.dat