sum() :
> It adds up the value in an RDD.
> It is an package org.apache.spark.rdd.DoubleRDDFunctions.
> Its return type is Double
Example:
val rdd1 = sc.parallelize(1 to 20)
rdd1.sum
Output:
Double = 210.0
max() :
> It returns a max value from RDD element defined by implicit ordering (element order)
> It is an package org.apache.spark.rdd
Example:
val rdd1 = sc.parallelize(List(1,5,9,0,23,56,99,87))
rdd1.max
Output:
Int = 99
min() :
> It returns a min value from RDD element defined by implicit ordering (element order)
> It is an package org.apache.spark.rdd
Example:
val rdd1 = sc.parallelize(List(1,5,9,0,23,56,99,87))
rdd1.min
Output:
Int = 0
For more operations on RDD read Spark RDD Operations.