I always thought what systems did in practice is that each node can have a variable number of logical buckets assigned to it, so if there is an uneven distribut

I always thought what systems did in practice is that each node can have a variable number of logical buckets assigned to it, so if there is an uneven distribution, the physical node subscribes to more or less buckets. This makes it so that the maximum logical bucket size is the maximum number of items a physical node can hold.