Investigate potential race condition in the scheduler nodeUpdate() method

    // If the node is decommissioning, send an update to have the total
    // resource equal to the used resource, so no available resource to
    // schedule.
    // TODO: Fix possible race-condition when request comes in before
    // update is propagated
    if (nm.getState() == NodeState.DECOMMISSIONING) {
      this.rmContext
          .getDispatcher()
          .getEventHandler()
          .handle(
              new RMNodeResourceUpdateEvent(nm.getNodeID(), ResourceOption
                  .newInstance(getSchedulerNode(nm.getNodeID())
                      .getAllocatedResource(), 0)));
    }