public void cleanup() throws InterruptedException, ExecutionException, IOException {
  for (  String keyspace : getNonSystemKeySpaces()) {
    cleanup(keyspace,Collections.emptyList());
  }
}

public void cleanup ( ) throws InterruptedException , ExecutionException , IOException { for ( String keyspace : getNonSystemKeySpaces ( ) ) { cleanup ( keyspace , Collections . emptyList ( ) ) ; } }
cleans the deleted keys and keys that no longer belong to the node for for all key spaces and column families .
