presto-main/src/main/java/io/prestosql/sql/planner/SystemPartitioningHandle.java/RoundRobinBucketFunction/getBucket
class RoundRobinBucketFunction:            @Override
            public int getBucket(Page page, int position)
            {
                int bucket = counter % bucketCount;
                counter = (counter + 1) & 0x7fff_ffff;
                return bucket;
            }