I think the problem is that can't produce multiple Datasets from one source
in one operation - consider that reproducing one of them would mean
reproducing all of them. You can write a method that would do the filtering
multiple times but it wouldn't be faster. What do you have in mind that's
I don't consider it as method to apply filtering multiple time, instead use
it as semi-action not just transformation. Let's think that we have
something like map-partition which accept multiple lambda that each one
collect their ROW for their dataset (or something like it). Is it possible?
On
