@Test
public void testScheduleWithDyingInstances() {
try {
Scheduler scheduler = new Scheduler(TestingUtils.defaultExecutionContext());
Instance i1 = getRandomInstance(2);
Instance i2 = getRandomInstance(2);
Instance i3 = getRandomInstance(1);
scheduler.newInstanceAvailable(i1);
scheduler.newInstanceAvailable(i2);
scheduler.newInstanceAvailable(i3);
List<SimpleSlot> slots = new ArrayList<SimpleSlot>();
slots.add(scheduler.allocateSlot(new ScheduledUnit(getDummyTask()), false).get());
slots.add(scheduler.allocateSlot(new ScheduledUnit(getDummyTask()), false).get());
slots.add(scheduler.allocateSlot(new ScheduledUnit(getDummyTask()), false).get());
slots.add(scheduler.allocateSlot(new ScheduledUnit(getDummyTask()), false).get());
slots.add(scheduler.allocateSlot(new ScheduledUnit(getDummyTask()), false).get());
i2.markDead();
for (SimpleSlot slot : slots) {
if (slot.getOwner() == i2) {
assertTrue(slot.isCanceled());
} else {
assertFalse(slot.isCanceled());
}
slot.releaseSlot();
}
assertEquals(3, scheduler.getNumberOfAvailableSlots());
i1.markDead();
i3.markDead();
// cannot get another slot, since all instances are dead
try {
scheduler.allocateSlot(new ScheduledUnit(getDummyTask()), false).get();
fail("Scheduler served a slot from a dead instance");
} catch (NoResourceAvailableException e) {
// fine
} catch (Exception e) {
fail("Wrong exception type.");
}
// now the latest, the scheduler should have noticed (through the lazy mechanisms)
// that all instances have vanished
assertEquals(0, scheduler.getNumberOfInstancesWithAvailableSlots());
assertEquals(0, scheduler.getNumberOfAvailableSlots());
} catch (Exception e) {
e.printStackTrace();
fail(e.getMessage());
}
}
@Test
public void testInstanceDies() {
try {
ResourceID resourceID = ResourceID.generate();
HardwareDescription hardwareDescription =
new HardwareDescription(
4, 2L * 1024 * 1024 * 1024, 1024 * 1024 * 1024, 512 * 1024 * 1024);
InetAddress address = InetAddress.getByName("127.0.0.1");
TaskManagerLocation connection = new TaskManagerLocation(resourceID, address, 10001);
Instance instance =
new Instance(
new ActorTaskManagerGateway(DummyActorGateway.INSTANCE),
connection,
new InstanceID(),
hardwareDescription,
3);
assertEquals(3, instance.getNumberOfAvailableSlots());
SimpleSlot slot1 = instance.allocateSimpleSlot(new JobID());
SimpleSlot slot2 = instance.allocateSimpleSlot(new JobID());
SimpleSlot slot3 = instance.allocateSimpleSlot(new JobID());
instance.markDead();
assertEquals(0, instance.getNumberOfAllocatedSlots());
assertEquals(0, instance.getNumberOfAvailableSlots());
assertTrue(slot1.isCanceled());
assertTrue(slot2.isCanceled());
assertTrue(slot3.isCanceled());
} catch (Exception e) {
e.printStackTrace();
fail(e.getMessage());
}
}