How to find max value in pair RDD?

Question

I have a spark pair RDD (key, count) as below

Array[(String, Int)] = Array((a,1), (b,2), (c,1), (d,3))

How to find the key with highest co

Answer 1

Spark RDD's are more efficient timewise when they are left as RDD's and not turned into Arrays

strinIntTuppleRDD.reduce((x, y) => if(x._2 > y._2) x else y)