spark报错：java反序列化

scheduler.TaskSetManager: Lost task 1.0 in stage 1.0 (TID 3, m103): com.esotericsoftware.kryo.KryoException: Error during Java deserialization

解决方法：

SparkConf sc = new SparkConf().setAppName("InfoExtraction");
sc.set("spark.serializer", "org.apache.spark.serializer.JavaSerializer");
JavaSparkContext jsc = new JavaSparkContext(sc);