The Evolution of Parallelism in MapReduce

You really have to change the way you approach the problem to fit it into MapReduce, right? Yeah, and a lot of people are not comfortable with that. If I told you to do that in Python, you would just have two loops. It would be totally obvious to you how to do it. And the only reason you would ever go to the MapReduce land is because you really needed that performance. That's what we've been doing.