@Test
public void testSepculateSuccessfulWithUpdateEvents() throws Exception {
Clock actualClock = new SystemClock();
final ControlledClock clock = new ControlledClock(actualClock);
clock.setTime(System.currentTimeMillis());
MRApp app =
new MRApp(NUM_MAPPERS, NUM_REDUCERS, false, "test", true, clock);
Job job = app.submit(new Configuration(), true, true);
app.waitForState(job, JobState.RUNNING);
Map<TaskId, Task> tasks = job.getTasks();
Assert.assertEquals("Num tasks is not correct", NUM_MAPPERS + NUM_REDUCERS,
tasks.size());
Iterator<Task> taskIter = tasks.values().iterator();
while (taskIter.hasNext()) {
app.waitForState(taskIter.next(), TaskState.RUNNING);
}
// Process the update events
clock.setTime(System.currentTimeMillis() + 1000);
EventHandler appEventHandler = app.getContext().getEventHandler();
for (Map.Entry<TaskId, Task> mapTask : tasks.entrySet()) {
for (Map.Entry<TaskAttemptId, TaskAttempt> taskAttempt : mapTask
.getValue().getAttempts().entrySet()) {
TaskAttemptStatus status =
createTaskAttemptStatus(taskAttempt.getKey(), (float) 0.5,
TaskAttemptState.RUNNING);
TaskAttemptStatusUpdateEvent event =
new TaskAttemptStatusUpdateEvent(taskAttempt.getKey(), status);
appEventHandler.handle(event);
}
}
Task speculatedTask = null;
int numTasksToFinish = NUM_MAPPERS + NUM_REDUCERS - 1;
clock.setTime(System.currentTimeMillis() + 1000);
for (Map.Entry<TaskId, Task> task : tasks.entrySet()) {
for (Map.Entry<TaskAttemptId, TaskAttempt> taskAttempt : task.getValue()
.getAttempts().entrySet()) {
if (numTasksToFinish > 0) {
appEventHandler.handle(new TaskAttemptEvent(taskAttempt.getKey(),
TaskAttemptEventType.TA_DONE));
appEventHandler.handle(new TaskAttemptEvent(taskAttempt.getKey(),
TaskAttemptEventType.TA_CONTAINER_CLEANED));
numTasksToFinish--;
app.waitForState(taskAttempt.getValue(), TaskAttemptState.SUCCEEDED);
} else {
// The last task is chosen for speculation
TaskAttemptStatus status =
createTaskAttemptStatus(taskAttempt.getKey(), (float) 0.75,
TaskAttemptState.RUNNING);
speculatedTask = task.getValue();
TaskAttemptStatusUpdateEvent event =
new TaskAttemptStatusUpdateEvent(taskAttempt.getKey(), status);
appEventHandler.handle(event);
}
}
}
clock.setTime(System.currentTimeMillis() + 15000);
for (Map.Entry<TaskId, Task> task : tasks.entrySet()) {
for (Map.Entry<TaskAttemptId, TaskAttempt> taskAttempt : task.getValue()
.getAttempts().entrySet()) {
if (taskAttempt.getValue().getState() != TaskAttemptState.SUCCEEDED) {
TaskAttemptStatus status =
createTaskAttemptStatus(taskAttempt.getKey(), (float) 0.75,
TaskAttemptState.RUNNING);
TaskAttemptStatusUpdateEvent event =
new TaskAttemptStatusUpdateEvent(taskAttempt.getKey(), status);
appEventHandler.handle(event);
}
}
}
final Task speculatedTaskConst = speculatedTask;
GenericTestUtils.waitFor(new Supplier<Boolean>() {
@Override
public Boolean get() {
if (speculatedTaskConst.getAttempts().size() != 2) {
clock.setTime(System.currentTimeMillis() + 1000);
return false;
} else {
return true;
}
}