scala RDD数据保存到本地txt文件中

代码如下：

package day01

import java.io.PrintWriter
import java.io.File

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

object countWord_2 {
  def main(args: Array[String]): Unit = {
    val conf = new SparkConf().setAppName("countWord_2").setMaster("local")
    val sc = new SparkContext(conf)
    System.setProperty("hadoop.home.dir", "E:\school_Study\spark\hadoop")
    val input = "F:\score.txt"

    val count = sc.textFile(input).flatMap(x => x.split(" ")).map(x => (x, 1)).reduceByKey((x, y) => x + y)
    //文件写入
    val writer = new PrintWriter(new File("res.txt"))

    count.foreach(x => println(String.valueOf(x._1 + " " + x._2)))
    val tuples = count.toArray()
    for (elem <- tuples) {
      writer.write(elem._1 + " " + elem._2 + "n")
    }
    writer.close()
  }
}

使用的Scala版本为：scala-2.10.5