title: How to properly cleanup Cassandra after stress testing?
body: <p>I've been tasked with standing up and prep'ing our production Cassandra cluster (3.11.1). Everything was fine, loaded in a few hundred million records with the stress testing tool, great. However after I was done I did a "DROP KEYSPACE keyspace1;" (the space used by the stress test) assuming this was like MySQL and the space would be cleaned up.</p>
  
  <p>Now I've run nodetools cleanup, flush, truncatehints, cleansnapshots and just about every other command variation I can find. The disk usage is still ~30GB per node and nothing seems to be going on in Cassandra.</p>
  
  <p>So #1 - How do I recover the diskspace that is being absorbed by the now deleted keyspace?</p>
  
  <p>And #2 - How should I have deleted this data, if this was the "wrong way"?</p>