@Override
 public void run() {
   if (evt instanceof DelegationTokenRenewerAppSubmitEvent) {
     DelegationTokenRenewerAppSubmitEvent appSubmitEvt =
         (DelegationTokenRenewerAppSubmitEvent) evt;
     handleDTRenewerAppSubmitEvent(appSubmitEvt);
   } else if (evt.getType().equals(DelegationTokenRenewerEventType.FINISH_APPLICATION)) {
     DelegationTokenRenewer.this.handleAppFinishEvent(evt);
   }
 }