class SecondSortKey(val first:Int,val second:Int) extends Ordered[SecondSortKey] with Serializable{
override def compare(that: SecondSortKey): Int = {
if(this.first - that.first !=0){
this.first-that.first
}else{
this.second-that.second
}
}
}
object SecondSort {
def main(args: Array[String]): Unit = {
val spark = SparkSession.builder().appName("SecondSort").master("local").getOrCreate()
val lines = spark.sparkContext.textFile("D:\\sort.txt")
val pairs = lines.map{line => (
new SecondSortKey(line.split(" ")(0).toInt,line.split(" ")(1).toInt),line
)}
val sortedParis = pairs.sortByKey()
val sortedLines = sortedParis.map(pairs => pairs._2)
sortedLines.foreach(s => println(s))
spark.stop()
}
}