How to use

addIfService

method

in

org.apache.hadoop.yarn.server.resourcemanager.ResourceManager$RMActiveServices

addIfService(scheduler);
rmContext.setScheduler(scheduler);
addIfService(schedulerDispatcher);
rmDispatcher.register(SchedulerEventType.class, schedulerDispatcher);
 if (reservationSystem != null) {
  reservationSystem.setRMContext(rmContext);
  addIfService(reservationSystem);
  rmContext.setReservationSystem(reservationSystem);
  LOG.info("Initialized Reservation system");

addIfService(scheduler);
rmContext.setScheduler(scheduler);
addIfService(schedulerDispatcher);
rmDispatcher.register(SchedulerEventType.class, schedulerDispatcher);
 if (reservationSystem != null) {
  reservationSystem.setRMContext(rmContext);
  addIfService(reservationSystem);
  rmContext.setReservationSystem(reservationSystem);
  LOG.info("Initialized Reservation system");

addIfService(scheduler);
rmContext.setScheduler(scheduler);
addIfService(schedulerDispatcher);
rmDispatcher.register(SchedulerEventType.class, schedulerDispatcher);
 if (reservationSystem != null) {
  reservationSystem.setRMContext(rmContext);
  addIfService(reservationSystem);
  rmContext.setReservationSystem(reservationSystem);
  LOG.info("Initialized Reservation system");
 addIfService(federationStateStoreService);
 LOG.info("Initialized Federation membership.");
  false)) {
 SystemServiceManager systemServiceManager = createServiceManager();
 addIfService(systemServiceManager);