Working on adding support for prefetching in the new DependencyTracker. So I figured out that we'll be able to prefetch PlanFragments for multi-partition queries... Still need to sort out some things like how to identify that we prefetched a query in the PartitionExecutor so that we don't send duplicate requests and how to recognize that it's okay that we executed queries out of order on remote partitions. KB made dinner so I'm going downstairs now. I'll be back in a bit... #125