自定义排序——Spark

//////、、、、、、、

object  OrderContext {

  implicit val girlOrdering = new Ordering[Gril]{

    override def compare(x:Gril, y:Gril): Int ={
      if(x.facevalue > y.facevalue) 1
      else if ( x.facevalue == y.facevalue ) {
        if (x.age >y.age) -1 else 1
      } else -1

    }
  }
}


//orderby: faceValue, after age

object  UrlPattitions {

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

    val conf = new SparkConf().setAppName("UrlPattitions").setMaster("local")
    val sc = new SparkContext(conf)
    val rdd1 = sc.parallelize(List(("aa", 90, 28, 1), ("bb", 90, 27, 2), ("cc", 95, 22, 3), ("dd", 85, 20, 4)))

    import  OrderContext._
    val rdd2 = rdd1.sortBy( x => Gril(x._2, x._3), false)


    println(rdd2.collect().toBuffer)
    sc.stop()
  }
}

/*case class Gril (val facevalue: Int, val age: Int)extends  Ordered[Gril] with Serializable{

  override def compare(that: Gril): Int = {

    if (this.facevalue == that.facevalue) {
      that.age - this.age
    }else {
      that.facevalue - this.facevalue
    }
  }
}*/


case class Gril (val facevalue: Int, val age: Int)extends Serializable

///////\\\\\\\

ArrayBuffer((cc,95,22,3), (bb,90,27,2), (aa,90,28,1), (dd,85,20,4))