Spark学习笔记 --- scala实现Spark wordcount例子

package wordcount.WordCount
import org.apache.spark.SparkConf
import org.apache.spark.SparkContext

/**
* Created by Ryan on 2017/3/7.
*/
object scala {
def main(args: Array[String]) : Unit = {
val conf = new SparkConf()
conf.setAppName("WordCountApplication")
conf.setMaster("local")
val sc = new SparkContext(conf)
val lines = sc.textFile("/usr/softwares/spark/ReadMe.md", 3)
val words = lines.flatMap{line => line.split(" ")}
val pairs = words.map(words => (words, 1))
val wordCounts = pairs.reduceByKey(_+_)
wordCounts.foreach(wordNumberPair => println(wordNumberPair._1 + " : " + wordNumberPair._2))
sc.stop()
}
}