Spark SQL实战
一、程序 1 package sparklearning 2 3 import org.apache.log4j.Logger 4 import org.apache.spark.SparkConf 5 import org.apache.spark.SparkContext 6 import org.apache.spark.sql.SQLContext 7 import org.apache.spark.storage.StorageLevel 8 import org.apache.log4j.Level 9 10 object OnLineTradeStatistics { 11 12 case class User(userID:String,gender:String,age:Int,registerDate:String,provice:String,career:String) 13 case class TradeDetail(tradeID:String, tradeDate:String,productID:Int,amount:Int,userID:String...

