②Map+ Reduce Very MAP Partitioning big REDUcE Result Function data Map Reduce Accepts input key / value Accepts intermediate pair ★ ey/value pair -Emits intermediate Emits output key/value Rey value pairMap+Reduce 7 • Map – Accepts input key/value pair – Emits intermediate key/value pair • Reduce – Accepts intermediate key/value* pair – Emits output key/value pair Very big data Result M A P R E D U C E Partitioning Function