org.apache.spark.SparkException: Task not serializable

Stack Overflow | Samy Nathan | 5 months ago
  1. 0

    how to solve this sparkstreaming error

    Stack Overflow | 5 months ago | Samy Nathan
    org.apache.spark.SparkException: Task not serializable
  2. 0

    GitHub comment 1051#142827688

    GitHub | 1 year ago | sgomezg
    org.apache.spark.SparkException: Task not serializable
  3. 0

    GitHub comment 1077#142882450

    GitHub | 1 year ago | danielcsant
    org.apache.spark.SparkException: Task not serializable
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  5. 0

    Spark streaming: task "predict" not serializable

    Stack Overflow | 1 year ago | Javier de la Rosa
    org.apache.spark.SparkException: Task not serializable
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    Twitter Spark Stream Filtering: Task not serializable exception

    Stack Overflow | 2 years ago | Kartikeya Sinha
    org.apache.spark.SparkException: Task not serializable

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    Root Cause Analysis

    1. java.io.NotSerializableException

      edu.stanford.nlp.ie.crf.CRFClassifier Serialization stack: - object not serializable (class: edu.stanford.nlp.ie.crf.CRFClassifier, value: edu.stanford.nlp.ie.crf.CRFClassifier@52cfd138) - field (class: com.bt.product.sparkstreaming.data.Sparkstreaming, name: classifier, type: class edu.stanford.nlp.ie.AbstractSequenceClassifier) - object (class com.bt.product.sparkstreaming.data.Sparkstreaming, com.bt.product.sparkstreaming.data.Sparkstreaming@54859767) - field (class: com.bt.product.sparkstreaming.data.Sparkstreaming$1, name: this$0, type: class com.bt.product.sparkstreaming.data.Sparkstreaming) - object (class com.bt.product.sparkstreaming.data.Sparkstreaming$1, com.bt.product.sparkstreaming.data.Sparkstreaming$1@48c9c466) - field (class: org.apache.spark.api.java.JavaPairRDD$$anonfun$toScalaFunction$1, name: fun$1, type: interface org.apache.spark.api.java.function.Function) - object (class org.apache.spark.api.java.JavaPairRDD$$anonfun$toScalaFunction$1, <function1>)

      at org.apache.spark.serializer.SerializationDebugger$.improveException()
    2. Spark
      SparkContext.clean
      1. org.apache.spark.serializer.SerializationDebugger$.improveException(SerializationDebugger.scala:40)
      2. org.apache.spark.serializer.JavaSerializationStream.writeObject(JavaSerializer.scala:47)
      3. org.apache.spark.serializer.JavaSerializerInstance.serialize(JavaSerializer.scala:84)
      4. org.apache.spark.util.ClosureCleaner$.ensureSerializable(ClosureCleaner.scala:301)
      5. org.apache.spark.util.ClosureCleaner$.org$apache$spark$util$ClosureCleaner$$clean(ClosureCleaner.scala:294)
      6. org.apache.spark.util.ClosureCleaner$.clean(ClosureCleaner.scala:122)
      7. org.apache.spark.SparkContext.clean(SparkContext.scala:2030)
      7 frames
    3. Spark Project Streaming
      DStream$$anonfun$map$1.apply
      1. org.apache.spark.streaming.dstream.DStream$$anonfun$map$1.apply(DStream.scala:528)
      2. org.apache.spark.streaming.dstream.DStream$$anonfun$map$1.apply(DStream.scala:528)
      2 frames
    4. Spark
      SparkContext.withScope
      1. org.apache.spark.rdd.RDDOperationScope$.withScope(RDDOperationScope.scala:147)
      2. org.apache.spark.rdd.RDDOperationScope$.withScope(RDDOperationScope.scala:108)
      3. org.apache.spark.SparkContext.withScope(SparkContext.scala:709)
      3 frames
    5. Spark Project Streaming
      AbstractJavaDStreamLike.map
      1. org.apache.spark.streaming.StreamingContext.withScope(StreamingContext.scala:266)
      2. org.apache.spark.streaming.dstream.DStream.map(DStream.scala:527)
      3. org.apache.spark.streaming.api.java.JavaDStreamLike$class.map(JavaDStreamLike.scala:157)
      4. org.apache.spark.streaming.api.java.AbstractJavaDStreamLike.map(JavaDStreamLike.scala:43)
      4 frames
    6. com.bt.product
      Sparkstreaming.run
      1. com.bt.product.sparkstreaming.data.Sparkstreaming.run(Sparkstreaming.java:251)
      1 frame
    7. Java RT
      Thread.run
      1. java.lang.Thread.run(Thread.java:745)
      1 frame