2017年7月12日
spark--actions算子--reduce
摘要： import org.apache.spark.{SparkConf, SparkContext} /** * Created by liupeng on 2017/6/16. */ object A_reduce { System.setProperty("hadoop.home.dir","F: 阅读全文
posted @ 2017-07-12 18:32 书灯 阅读(11) 评论(0) 推荐(0)
spark--actions算子--first
摘要： import org.apache.spark.{SparkConf, SparkContext} /** * Created by liupeng on 2017/6/16. */ object A_first { System.setProperty("hadoop.home.dir","F:\ 阅读全文
posted @ 2017-07-12 14:36 书灯 阅读(14) 评论(0) 推荐(0)
spark--actions算子--count
摘要： import org.apache.spark.{SparkConf, SparkContext} /** * Created by liupeng on 2017/6/16. */ object A_count { System.setProperty("hadoop.home.dir","F:\ 阅读全文
posted @ 2017-07-12 14:20 书灯 阅读(15) 评论(0) 推荐(0)