Word count using Scala

WordCount.scala

import org.apache.spark.{SparkConf, SparkContext}

object WordCount extends App {
  val conf = new SparkConf().setAppName("WordCount").setMaster("local[*]")
  val sc = new SparkContext(conf)
  val rdd = sc.textFile(args(0))
  val counts = rdd
    .flatMap(line => line.split("[ _\\-'\",<>\\.]"))
    .filter(_.length > 0)
    .map(word => (word.toLowerCase(), 1))
    .reduceByKey(_ + _)
    .collect.toList.sortBy(kv => -kv._2)
  println(counts)
}