Spark - java.lang.ClassCastException：无法将java.lang.invoke.SerializedLambda的实例分配给字段org.apache.spark.api.java.JavaRDDLike

Question

public class SparkDemo {

    @SuppressWarnings({ "resource" })
    public static void main(String[] args) {

         SparkConf conf = new SparkConf().setAppName("Spark APP").setMaster("spark://xxx.xxx.xxx.xx:7077");


        JavaSparkContext sc = new JavaSparkContext(conf);

        JavaRDD<String> lines = sc.textFile("/Users/mchaurasia/file.txt");

        JavaRDD<String> words = lines.flatMap((String s) -> {
            return Arrays.asList(s.split(" "));
        });

        JavaPairRDD<String, Integer> pairs = words.mapToPair((String s) -> {
            return new Tuple2<String, Integer>(s, 1);
        });

        JavaPairRDD<String, Integer> counts = pairs.reduceByKey((a, b) -> a + b);

        for (Tuple2<String, Integer> result : counts.collect()) {
            System.out.println(result._1 + " , " + result._2);
        }

        sc.close();
        System.out.println("================= DONE ===================");
    }

当我使用setMaster（＆＃34; spark：//xxx.xxx.xxx）将master设置为local（setMaster（＆＃34; local＆＃34;））时，上面的代码工作正常.XX：7077＆＃34）， 我收到了以下错误 -

6/06/21 09:28:59 WARN TaskSetManager: Lost task 1.0 in stage 0.0 (TID 1, xxx.xxx.xxx.xx): java.lang.ClassCastException: cannot assign instance of java.lang.invoke.SerializedLambda to field org.apache.spark.api.java.JavaRDDLike$$anonfun$fn$1$1.f$3 of type org.apache.spark.api.java.function.FlatMapFunction in instance of org.apache.spark.api.java.JavaRDDLike$$anonfun$fn$1$1
    at java.io.ObjectStreamClass$FieldReflector.setObjFieldValues(ObjectStreamClass.java:2089)
    at java.io.ObjectStreamClass.setObjFieldValues(ObjectStreamClass.java:1261)
    at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1999)
    at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1918)
    at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1801)
    at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1351)
    at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1993)
    at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1918)
    at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1801)
    at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1351)
    at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1993)
    at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1918)
    at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1801)
    at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1351)
    at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1993)
    at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1918)
    at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1801)
    at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1351)
    at java.io.ObjectInputStream.readObject(ObjectInputStream.java:371)
    at scala.collection.immutable.$colon$colon.readObject(List.scala:362)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:483)
    at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:1017)
    at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1896)
    at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1801)
    at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1351)
    at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1993)
    at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1918)
    at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1801)
    at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1351)
    at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1993)
    at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1918)

线程中的异常＆＃34; main＆＃34; org.apache.spark.SparkException：作业因阶段失败而中止：阶段0.0中的任务0失败4次，最近失败：阶段0.0中失去的任务0.3（TID 5，xxx.xxx.xxx.xx）：java.lang .ClassCastException：无法将java.lang.invoke.SerializedLambda的实例分配给字段org.apache.apark.api.java.JavaRDDLike $$ anonfun $ fn $ 1 $ 1.f $ 3类型为org.apache.spark.api.java.function在org.apache.spark.api.java.JavaRDDLike $$ anonfun $ fn $ 1 $ 1的实例中.FlatMapFunction     at java.io.ObjectStreamClass $ FieldReflector.setObjFieldValues（ObjectStreamClass.java:2089）     at java.io.ObjectStreamClass.setObjFieldValues（ObjectStreamClass.java:1261）     at java.io.ObjectInputStream.defaultReadFields（ObjectInputStream.java:1999）     at java.io.ObjectInputStream.readSerialData（ObjectInputStream.java:1918）     at java.io.ObjectInputStream.readOrdinaryObject（ObjectInputStream.java:1801）     在java.io.ObjectInputStream.readObject0（ObjectInputStream.java:1351）

请帮忙。