I can't say without more information on the problem to solve. As I said above, there are cases where MapReduce is a good tool. And even if you improve the DS/A

I can't say without more information on the problem to solve. As I said above, there are cases where MapReduce is a good tool. And even if you improve the DS/Algorithm first, usually that is usable by the MapReduce port and you save a lot of time/costs.