public void close(){
  log.info("shutting down...");
  exec.shutdown();
  log.info("closing {} JMX clients.",clients.size());
  for (  CassandraJmxCompactionClient client : clients) {
    client.close();
  }
}

public void close ( ) { log . info ( "shutting down..." ) ; exec . shutdown ( ) ; log . info ( "closing {} JMX clients." , clients . size ( ) ) ; for ( CassandraJmxCompactionClient client : clients ) { client . close ( ) ; } }
close all the jmx compaction connections .
