bq. try adding scala.collection.mutable.WrappedArray
But the hint said registering scala.collection.mutable.WrappedArray$ofRef.class
, right ?
On Fri, Jan 8, 2016 at 8:52 AM, jiml <j...@megalearningllc.com> wrote:
> (point of post is to see if anyone has ideas about errors at end of post)
>
> In addition, the real way to test if it's working is to force
> serialization:
>
> In Java:
>
> Create array of all your classes:
> // for kyro serializer it wants to register all classes that need to be
> serialized
> Class[] kryoClassArray = new Class[]{DropResult.class,
> DropEvaluation.class,
> PrintHetSharing.class};
>
> in the builder for your SparkConf (or in conf/spark-defaults.sh)
> .set("spark.serializer",
> "org.apache.spark.serializer.KryoSerializer")
> //require registration of all classes with Kyro
> .set("spark.kryo.registrationRequired", "true")
> // don't forget to register ALL classes or will get error
> .registerKryoClasses(kryoClassArray);
>
> Then you will start to get neat errors like the one I am working on:
>
> Exception in thread "main" org.apache.spark.SparkException: Job aborted due
> to stage failure: Failed to serialize task 0, not attempting to retry it.
> Exception during serialization: java.io.IOException:
> java.lang.IllegalArgumentException: Class is not registered:
> scala.collection.mutable.WrappedArray$ofRef
> Note: To register this class use:
> kryo.register(scala.collection.mutable.WrappedArray$ofRef.class);
>
> I did try adding scala.collection.mutable.WrappedArray to the Class array
> up
> top but no luck. Thanks
>
>
>
>
>
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