01 Spark on WordCount

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


object WordCount {

  def main(args: Array[String]): Unit = {

    val conf: SparkConf = new SparkConf().setAppName("SparkWordCount").setMaster("local[*]")

    val sc: SparkContext = new SparkContext(conf)

    val lines: RDD[String] = sc.textFile("/Users/liyapeng/Desktop/test_data.txt",2)

    val words: RDD[String] = lines.flatMap(_.split("n"))

    val tuples: RDD[(String, Int)] = words.map((_, 1))

    val sum: RDD[(String, Int)] = tuples.reduceByKey(_ + _)

    sum.collect().foreach(println);


    sc.stop()
  }

}