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From Maximilian Alber <alber.maximil...@gmail.com>
Subject Class not found exception in user defined 'open()' function without open() function
Date Thu, 11 Dec 2014 09:48:52 GMT
Hi Flinksters!

I get some strange error. The compiler complains about an error inside a
function, but that function is not declared by my code. So I assume it is
not my bad..

The code (the alternative is just used to show that the error happens in
here...):

// begin alternative /////////////////////
//index_tmp neutralize
// end alternative ///////////////////////

// begin error section ///////////////////
val index = index_tmp map {x: Vector => Tuple1(1)} sum 0

val center = X.filter(new RichFilterFunction[Vector](){
    var index: Int = 0
    //override def open(config: Configuration) = {
    //val x: Tuple1[Int] =
getRuntimeContext.getBroadcastVariable("index").toList.head
    //index = 0//x._1
    //}
    def filter(x: Vector) = x.id == index
}).withBroadcastSet(index, "index")

center neutralize

The error:

 Error: The program execution failed: java.lang.Exception: The user defined
'open()' method caused an exception: Repeated instantiation of serializer
failed.
at
org.apache.flink.runtime.operators.RegularPactTask.run(RegularPactTask.java:488)
at
org.apache.flink.runtime.operators.RegularPactTask.invoke(RegularPactTask.java:360)
at
org.apache.flink.runtime.execution.RuntimeEnvironment.run(RuntimeEnvironment.java:257)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.RuntimeException: Repeated instantiation of serializer
failed.
at
org.apache.flink.api.java.typeutils.runtime.RuntimeStatefulSerializerFactory.getSerializer(RuntimeStatefulSerializerFactory.java:102)
at
org.apache.flink.api.scala.operators.ScalaAggregateOperator$AggregatingUdf.open(ScalaAggregateOperator.java:275)
at
org.apache.flink.api.common.functions.util.FunctionUtils.openFunction(FunctionUtils.java:33)
at
org.apache.flink.runtime.operators.RegularPactTask.run(RegularPactTask.java:484)
... 3 more
Caused by: java.lang.ClassNotFoundException:
bumpboost.BumpBoost$$anon$87$$anon$88
at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:274)
at java.io.ObjectInputStream.resolveClass(ObjectInputStream.java:625)
at
org.apache.flink.util.InstantiationUtil$ClassLoaderObjectInputStream.resolveClass(InstantiationUtil.java:57)
at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1612)
at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1517)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1771)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:370)
at
org.apache.flink.util.InstantiationUtil.deserializeObject(InstantiationUtil.java:274)
at
org.apache.flink.api.java.typeutils.runtime.RuntimeStatefulSerializerFactory.getSerializer(RuntimeStatefulSerializerFactory.java:100)
... 6 more


I append the source code, jar and the input files.

May call it with these params(exchange in_file, random_file,
width_candidates_file):

 'run', '-v', 'bump_boost-0.1.jar', '-c', 'bumpboost.Job',
'in_file=/tmp/tmpKd0Pq0', 'out_file=/tmp/tmpDq6EqG',
'random_file=/tmp/tmpZWiEdt', 'dimensions=1', 'N=100',
'width_candidates_file=/tmp/tmpcLVUeQ', 'N_width_candidates=50',
'iterations=30', 'multi_bump_boost=0', 'gradient_descent_iterations=30',
'cache=False', 'start_width=1.0', 'min_width=-4', 'max_width=6',
'min_width_update=1e-08', 'max_width_update=10'

Cheers
Max

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