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@@ -33,7 +33,7 @@ public class ExecutorBuilder {
 
 
     public ExecutorBuilder sparkConf() {
-        sparkConf = () -> new SparkConf().setAppName(APP_NAME);
+        sparkConf = () -> new SparkConf().setAppName(APP_NAME).set("spark.serializer", "org.apache.spark.serializer.KryoSerializer");
         return this;
     }