The hello word for Apache Spark

SimpleApp.scala

import org.apache.spark.SparkContext
import org.apache.spark.SparkContext._
import org.apache.spark.SparkConf

object SimpleApp {
  def main(args: Array[String]) {
		

    val conf = new SparkConf().setAppName("Simple Application")
    val sc = new SparkContext(conf)

		sc.setLogLevel("WARN")

    val letters = Array('a','b','c','b','c','c','d','e','f')

    val myRDD = sc.parallelize(letters)
    
		myRDD.map(letter => (letter, 1))
			.reduceByKey(_+_)
			.collect()
			.foreach(println)
  }
}