presto-main/src/main/java/io/prestosql/execution/scheduler/FixedSourcePartitionedScheduler.java/BucketedSplitPlacementPolicy/computeAssignments
class BucketedSplitPlacementPolicy:        @Override
        public SplitPlacementResult computeAssignments(Set<Split> splits)
        {
            return nodeSelector.computeAssignments(splits, remoteTasks.get(), bucketNodeMap);
        }