package com.packt.sfjd.ch7; import org.apache.spark.SparkConf; import org.apache.spark.api.java.JavaSparkContext; import org.apache.spark.broadcast.Broadcast; import org.apache.spark.sql.SparkSession; public class BroadcastVariable { public static void main(String[] args) { // SparkConf conf = new SparkConf().setMaster("local").setAppName("BroadCasting"); // JavaSparkContext jsc = new JavaSparkContext(conf); // // Broadcast<String> broadcastVar = jsc.broadcast("Hello Spark"); // SparkSession sparkSession = SparkSession.builder().master("local").appName("My App") .config("spark.sql.warehouse.dir", "file:////C:/Users/sgulati/spark-warehouse").getOrCreate(); Broadcast<String> broadcastVar= sparkSession.sparkContext().broadcast("Hello Spark", scala.reflect.ClassTag$.MODULE$.apply(String.class)); System.out.println(broadcastVar.getValue()); broadcastVar.unpersist(); // broadcastVar.unpersist(true); broadcastVar.destroy(); } }