@Override public synchronized void stop(){
  if (running) {
    if (statusLogger != null) {
      statusLogger.cancel(false);
    }
    deduplicator.stop();
    clear();
    running=false;
  }
}

@ Override public synchronized void stop ( ) { if ( running ) { if ( statusLogger != null ) { statusLogger . cancel ( false ) ; } deduplicator . stop ( ) ; clear ( ) ; running = false ; } }
stops this store and purges all registered exchanges .
