Allow a question from a newbie
1. Lets assume we have a global (matrix) [X,Y,Z] that is distributed across sharded nodes
2. Matrix size doesnt matter, but lets assume it holds 500 GB for the moment
3. I want to return all rows where f(x,y,z) is true. f() is an arbitrary function, i.e. f = x + 20(y*y) > z