java.io.NotSerializableException: org.neo4j.driver.internal.InternalNode Serialization stack: - object not serializable (class: org.neo4j.driver.internal.InternalNode, value: node<10516047>) - element of array (index: 0) - array (class [Ljava.lang.Object;, size 1) - field (class: org.apache.spark.sql.catalyst.expressions.GenericRow, name: values, type: class [Ljava.lang.Object;) - object (class org.apache.spark.sql.catalyst.expressions.GenericRowWithSchema, [node<10516047>]) - element of array (index: 0) - array (class [Lorg.apache.spark.sql.Row;, size 1)

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Root Cause Analysis

  1. java.io.NotSerializableException

    org.neo4j.driver.internal.InternalNode Serialization stack: - object not serializable (class: org.neo4j.driver.internal.InternalNode, value: node<10516047>) - element of array (index: 0) - array (class [Ljava.lang.Object;, size 1) - field (class: org.apache.spark.sql.catalyst.expressions.GenericRow, name: values, type: class [Ljava.lang.Object;) - object (class org.apache.spark.sql.catalyst.expressions.GenericRowWithSchema, [node<10516047>]) - element of array (index: 0) - array (class [Lorg.apache.spark.sql.Row;, size 1)

    at org.apache.spark.serializer.SerializationDebugger$.improveException()
  2. Spark
    Executor$TaskRunner.run
    1. org.apache.spark.serializer.SerializationDebugger$.improveException(SerializationDebugger.scala:40)
    2. org.apache.spark.serializer.JavaSerializationStream.writeObject(JavaSerializer.scala:46)
    3. org.apache.spark.serializer.JavaSerializerInstance.serialize(JavaSerializer.scala:100)
    4. org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:313)
    4 frames
  3. Java RT
    Thread.run
    1. java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    2. java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    3. java.lang.Thread.run(Thread.java:745)
    3 frames