Cloud Computing, MapReduce
Comment
Intro map 과 reduce 라는 단어는 functional language 에서 왔다. map: processes each record sequentially and independently reduce: processes set of all records in batches (map square '(1 2 3 4)) ;; (1 4 9 16) (reduce + '(1 4 9 16)) ;; (+16 (+9 (+4 1))) ;; 30 MapReduce (http://webmapreduce.…