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 > > > > > > -- > View this message in context: > http://apache-spark-user-list.1001560.n3.nabble.com/kryos-serializer-tp16454p25921.html > Sent from the Apache Spark User List mailing list archive at Nabble.com. > > --------------------------------------------------------------------- > To unsubscribe, e-mail: user-unsubscr...@spark.apache.org > For additional commands, e-mail: user-h...@spark.apache.org > >