private boolean shouldReschedule(SingularityRequest newRequest, SingularityRequest oldRequest) {
if (newRequest.getInstancesSafe() != oldRequest.getInstancesSafe()) {
return true;
}
if (newRequest.isScheduled() && oldRequest.isScheduled()) {
if (!newRequest.getQuartzScheduleSafe().equals(oldRequest.getQuartzScheduleSafe())) {
return true;
}
}
return false;
}
private int getNumMissingInstances(
List<SingularityTaskId> matchingTaskIds,
SingularityRequest request,
SingularityPendingRequest pendingRequest) {
if (request.isOneOff() && pendingRequest.getPendingType() == PendingType.ONEOFF) {
return 1;
}
final int numInstances = request.getInstancesSafe();
return numInstances - matchingTaskIds.size();
}
private int scheduleTasks(
SingularitySchedulerStateCache stateCache,
SingularityRequest request,
RequestState state,
SingularityDeployStatistics deployStatistics,
SingularityPendingRequest pendingRequest,
List<SingularityTaskId> matchingTaskIds) {
deleteScheduledTasks(stateCache.getScheduledTasks(), pendingRequest);
final int numMissingInstances =
getNumMissingInstances(matchingTaskIds, request, pendingRequest);
LOG.debug(
"Missing {} instances of request {} (matching tasks: {}), pending request: {}",
numMissingInstances,
request.getId(),
matchingTaskIds,
pendingRequest);
if (numMissingInstances > 0) {
final List<SingularityPendingTask> scheduledTasks =
getScheduledTaskIds(
numMissingInstances,
matchingTaskIds,
request,
state,
deployStatistics,
pendingRequest.getDeployId(),
pendingRequest);
if (!scheduledTasks.isEmpty()) {
LOG.trace("Scheduling tasks: {}", scheduledTasks);
for (SingularityPendingTask scheduledTask : scheduledTasks) {
taskManager.savePendingTask(scheduledTask);
}
} else {
LOG.info(
"No new scheduled tasks found for {}, setting state to {}",
request.getId(),
RequestState.FINISHED);
requestManager.finish(request, System.currentTimeMillis());
}
} else if (numMissingInstances < 0) {
final long now = System.currentTimeMillis();
Collections.sort(
matchingTaskIds,
Collections.reverseOrder(
SingularityTaskId.INSTANCE_NO_COMPARATOR)); // clean the highest numbers
for (int i = 0; i < Math.abs(numMissingInstances); i++) {
final SingularityTaskId toCleanup = matchingTaskIds.get(i);
LOG.info(
"Cleaning up task {} due to new request {} - scaling down to {} instances",
toCleanup.getId(),
request.getId(),
request.getInstancesSafe());
taskManager.createTaskCleanup(
new SingularityTaskCleanup(
pendingRequest.getUser(),
TaskCleanupType.SCALING_DOWN,
now,
toCleanup,
Optional.<String>absent()));
}
}
return numMissingInstances;
}