Hi Arvid, this indeed looks like a ClassLoader problem. Are you running a version that you compiled yourself? If yes, could you try replacing line 49 in RuntimeStatefulSerializerFactory.java with this line:
this.loader = Thread.currentThread().getContextClassLoader(); Cheers, Aljoscha On Thu, Jan 29, 2015 at 4:25 PM, Alexander Alexandrov <alexander.s.alexand...@gmail.com> wrote: > Forget what I just said, didn't realize that it's Scala :) > > 2015-01-29 16:24 GMT+01:00 Alexander Alexandrov < > alexander.s.alexand...@gmail.com>: > >> have you tried declaring your UDF classes (e.g. TotalRankDistribution) as >> static? >> >> 2015-01-29 16:14 GMT+01:00 Arvid Heise <arvid.he...@gmail.com>: >> >>> Hi Flinker, >>> >>> I'm currently desparetely trying to get a workflow to run remotely on a >>> server. The workflow works fine in the local execution environment (both >>> with ExecutionEnvironment.getExecutionEnvironment and >>> ExecutionEnvironment.createLocalEnvironment(2)). >>> >>> On the server, I get >>> >>> 01/29/2015 16:05:22: GroupReduce (GroupReduce at >>> de.bund.bfr.flink.outbreakanalysis.OutbreakAnalysis$.main(OutbreakAnalysis.scala:79)) >>> (1/1) switched to FAILED >>> java.lang.RuntimeException: : Repeated instantiation of serializer failed. >>> at >>> org.apache.flink.runtime.operators.RegularPactTask.invoke(RegularPactTask.java:340) >>> at >>> org.apache.flink.runtime.execution.RuntimeEnvironment.run(RuntimeEnvironment.java:257) >>> at java.lang.Thread.run(Thread.java:722) >>> 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.java.typeutils.runtime.TupleComparatorBase.instantiateDeserializationUtils(TupleComparatorBase.java:267) >>> at >>> org.apache.flink.api.scala.typeutils.CaseClassComparator.duplicate(CaseClassComparator.scala:42) >>> at >>> org.apache.flink.runtime.operators.sort.UnilateralSortMerger.<init>(UnilateralSortMerger.java:360) >>> at >>> org.apache.flink.runtime.operators.sort.UnilateralSortMerger.<init>(UnilateralSortMerger.java:227) >>> at >>> org.apache.flink.runtime.operators.sort.UnilateralSortMerger.<init>(UnilateralSortMerger.java:195) >>> at >>> org.apache.flink.runtime.operators.RegularPactTask.initInputLocalStrategy(RegularPactTask.java:981) >>> at >>> org.apache.flink.runtime.operators.RegularPactTask.initLocalStrategies(RegularPactTask.java:842) >>> at >>> org.apache.flink.runtime.operators.RegularPactTask.invoke(RegularPactTask.java:336) >>> ... 2 more >>> Caused by: java.lang.ClassNotFoundException: >>> de.bund.bfr.flink.outbreakanalysis.OutbreakAnalysis$$anon$13$$anon$14$$anon$15 >>> >>> The class is of course in the submitted jar and I use the same flink and >>> java version on both machines. Could it be that the wrong class loader is >>> used for duplicating the comparator? >>> >>> The code is available here >>> https://github.com/SiLeBAT/Other/tree/master/de.bund.bfr.flink.outbreakanalysis >>> . >>> If you need help to invoke the program, please msg me privately, so that >>> I can send you the non-public datasets. >>> >>> Thank you in advance, >>> >>> Arvid >>> >> >>
