com.esotericsoftware.kryo.KryoException

Encountered unregistered class ID: 2422353

Samebug tips1

Kryo doesn't accept multi-threaded data access, there's a few workarounds for this, such as duplicating the buffer, but they sacrifice a bit of performance.

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Solutions on the web166

  • via GitHub by car2008
    , 10 months ago
    Encountered unregistered class ID: 2422353
  • via GitHub by Gladmir
    , 10 months ago
    Encountered unregistered class ID: 46
  • via GitHub by ddispaltro
    , 1 year ago
    Encountered unregistered class ID: 1466714
  • Stack trace

    • com.esotericsoftware.kryo.KryoException: Encountered unregistered class ID: 2422353 at com.esotericsoftware.kryo.util.DefaultClassResolver.readClass(DefaultClassResolver.java:119) at com.esotericsoftware.kryo.Kryo.readClass(Kryo.java:610) at com.esotericsoftware.kryo.Kryo.readClassAndObject(Kryo.java:721) at org.apache.spark.serializer.KryoDeserializationStream.readObject(KryoSerializer.scala:228) at org.apache.spark.serializer.DeserializationStream.readValue(Serializer.scala:171) at org.apache.spark.serializer.DeserializationStream$$anon$2.getNext(Serializer.scala:201) at org.apache.spark.serializer.DeserializationStream$$anon$2.getNext(Serializer.scala:198) at org.apache.spark.util.NextIterator.hasNext(NextIterator.scala:73) at scala.collection.Iterator$$anon$13.hasNext(Iterator.scala:371) at scala.collection.Iterator$$anon$11.hasNext(Iterator.scala:327) at org.apache.spark.util.CompletionIterator.hasNext(CompletionIterator.scala:32) at org.apache.spark.InterruptibleIterator.hasNext(InterruptibleIterator.scala:39) at org.apache.spark.util.collection.ExternalSorter.insertAll(ExternalSorter.scala:197) at org.apache.spark.shuffle.BlockStoreShuffleReader.read(BlockStoreShuffleReader.scala:103) at org.apache.spark.rdd.ShuffledRDD.compute(ShuffledRDD.scala:98) at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:306) at org.apache.spark.rdd.RDD.iterator(RDD.scala:270) at org.apache.spark.rdd.MapPartitionsRDD.compute(MapPartitionsRDD.scala:38) at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:306) at org.apache.spark.rdd.RDD.iterator(RDD.scala:270) at org.apache.spark.scheduler.ResultTask.runTask(ResultTask.scala:66) at org.apache.spark.scheduler.Task.run(Task.scala:89) at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:214) 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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