Any known challenges with Beam Model ?

[Eswar Reddy <es...@gmail.com>]

Hi Beamers,

Beam model understandably gravitates more towards what makes sense to do
with data in a more theoretical manner rather than exactly how runner's
process it. That also sets the model free from status quo of runners(and
gives them a level playing field from semantics view point). But are there
any known challenges with the approach? (If yes, I'd like to think they
apply to any unification layer in general)

I have one specific example which may or may not fall into above category.
What if I want to tune at the level of nuts and bolts of the underlying
engine? There is no one-to-one mapping from beam constructs to runner's
granular execution units(say, a bolt in storm).

Cheers,
Eswar.