On my 5-node cluster, I issued various `drop table <keyspace_name>.<table_name>` commands. After that action, their data on individual nodes still persists under /var/lib/cassandra/data//

I would like to know if there has been any best practice on freeing up space.
Or, would the `rm -rf /var/lib/cassandra/data/<keyspace_name>/*` command on respective nodes suffice?