// no preemption - higher pri. exact match
scheduler.getProgress();
drainableAppCallback.drain();
verify(mockRMClient, times(0)).releaseAssignedContainer((ContainerId)any());
scheduler.allocateTask(mockTask2, taskAsk, null,
null, pri4, null, null);
drainableAppCallback.drain();
// mockTaskPri3Kill gets preempted
scheduler.getProgress();