public void schedule() throws Exception {
try {
final int incompleteTaskNum =
scheduledRequests.leafTaskNum() + scheduledRequests.nonLeafTaskNum();
if (incompleteTaskNum == 0) {
needWakeup.set(true);
// all task is done or tasks is not scheduled
synchronized (schedulingThread) {
schedulingThread.wait(1000);
}
} else {
LinkedList<TaskRequestEvent> taskRequests = createTaskRequest(incompleteTaskNum);
if (taskRequests.size() == 0) {
synchronized (schedulingThread) {
schedulingThread.wait(schedulerDelay);
}
} else {
if (LOG.isDebugEnabled()) {
LOG.debug("Get " + taskRequests.size() + " taskRequestEvents ");
}
if (isLeaf) {
scheduledRequests.assignToLeafTasks(taskRequests);
} else {
scheduledRequests.assignToNonLeafTasks(taskRequests);
}
}
}
} catch (TimeoutException e) {
LOG.error(e.getMessage());
}
}