java.lang.ClassCastException

cannot assign instance of scala.collection.immutable.List$SerializationProxy to field org.apache.spark.rdd.RDD.org$apache$spark$rdd$RDD$$dependencies_ of type scala.collection.Seq in instance of org.apache.spark.rdd.MapPartitionsRDD

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Stack trace

  • java.lang.ClassCastException: cannot assign instance of scala.collection.immutable.List$SerializationProxy to field org.apache.spark.rdd.RDD.org$apache$spark$rdd$RDD$$dependencies_ of type scala.collection.Seq in instance of org.apache.spark.rdd.MapPartitionsRDD at java.io.ObjectStreamClass$FieldReflector.setObjFieldValues(ObjectStreamClass.java:2133) at java.io.ObjectStreamClass.setObjFieldValues(ObjectStreamClass.java:1305) at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:2024) at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1942) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1808) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1353) at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:2018) at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1942) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1808) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1353) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:373) at org.apache.spark.serializer.JavaDeserializationStream.readObject(JavaSerializer.scala:75) at org.apache.spark.serializer.JavaSerializerInstance.deserialize(JavaSerializer.scala:114) at org.apache.spark.scheduler.ResultTask.runTask(ResultTask.scala:66) at org.apache.spark.scheduler.Task.run(Task.scala:85) at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:274) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:745)

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