Don't Update Terminal Jobs On Cancel/Reprioritise #4043
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The scheduler ingester was being quite naive when dealing requestCancel/requestReprioritize/requestPreempt. Essentially it was updating all jobs, even those in a terminal state. As terminal jobs cannot be cancelled, reprioritized or preempted this could mean that many more rows were updated that was strictly necessary.
This change addresses that by ensuring that such updates filter to active jobs only.