Hi guys
Class mClockQueue calls PullPriorityQueue::pull_request in function
dequeue() . But PullPriorityQueue::pull_request may return a "future"
value. That means the mclock tag of the request are greater than now,
so it should be executed in the future instead of now.The mistake is
that the mClockQueue::dequeue() do not consider about the type of
return value
and execute the request immediately. What is more serious is that
PullPriorityQueue remains the request in queue and it would be
executed twice in the future.
From Weihaocheng
