Refactor NPM pipeline to reduce cost of EMR by 97%. This can be achieved by performing data update using cron job on production cluster and model generation alone using EMR.

Details of modification can be read in this document under EMR Optimisation :: https://docs.google.com/document/d/1OFBQDWiGGEb045eTJfNCxz9G4n1jYvH9h3AHe9pXCPc/edit?usp=sharing