Hi, maybe Kryo is not able to serialize the class. Is the class holding the data outside of the heap?
In those cases, I would recommend implementing a custom serializer (either by using Flink's TypeInformation system or Kryo). On Tue, Jun 21, 2016 at 5:43 PM, Debaditya Roy <roydca...@gmail.com> wrote: > Hi, > > I am using flink-1.0.3. > > Warm Regards, > Debaditya > > On Tue, Jun 21, 2016 at 5:29 PM, Robert Metzger <rmetz...@apache.org> > wrote: > >> Hi, >> which version of Flink are you using? There has been a recent fix for the >> issue: https://issues.apache.org/jira/browse/FLINK-3762 >> >> Regards, >> Robert >> >> On Tue, Jun 21, 2016 at 5:22 PM, Debaditya Roy <roydca...@gmail.com> >> wrote: >> >>> Hello users, >>> >>> I am getting an error from the flat map function while running my >>> program. My program is sending an object of type Mat(OpenCV) from the >>> custom source function and passing it to the flat map function for >>> processing. However while executing I am getting this error: >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> *org.apache.flink.runtime.client.JobExecutionException: Job execution >>> failed. at >>> org.apache.flink.runtime.jobmanager.JobManager$$anonfun$handleMessage$1$$anonfun$applyOrElse$7.apply$mcV$sp(JobManager.scala:717) >>> at >>> org.apache.flink.runtime.jobmanager.JobManager$$anonfun$handleMessage$1$$anonfun$applyOrElse$7.apply(JobManager.scala:663) >>> at >>> org.apache.flink.runtime.jobmanager.JobManager$$anonfun$handleMessage$1$$anonfun$applyOrElse$7.apply(JobManager.scala:663) >>> at >>> scala.concurrent.impl.Future$PromiseCompletingRunnable.liftedTree1$1(Future.scala:24) >>> at >>> scala.concurrent.impl.Future$PromiseCompletingRunnable.run(Future.scala:24) >>> at akka.dispatch.TaskInvocation.run(AbstractDispatcher.scala:41) at >>> akka.dispatch.ForkJoinExecutorConfigurator$AkkaForkJoinTask.exec(AbstractDispatcher.scala:401) >>> at scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260) >>> at >>> scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.pollAndExecAll(ForkJoinPool.java:1253) >>> at >>> scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1346) >>> at >>> scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979) >>> at >>> scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107)Caused >>> by: java.lang.StackOverflowError at >>> com.esotericsoftware.kryo.util.DefaultClassResolver.writeClass(DefaultClassResolver.java:79) >>> at com.esotericsoftware.kryo.Kryo.writeClass(Kryo.java:488) at >>> com.esotericsoftware.kryo.serializers.ObjectField.write(ObjectField.java:57) >>> at >>> com.esotericsoftware.kryo.serializers.FieldSerializer.write(FieldSerializer.java:495) >>> at com.esotericsoftware.kryo.Kryo.writeObject(Kryo.java:523) at >>> com.esotericsoftware.kryo.serializers.ObjectField.write(ObjectField.java:61) >>> at >>> com.esotericsoftware.kryo.serializers.FieldSerializer.write(FieldSerializer.java:495) >>> at com.esotericsoftware.kryo.Kryo.writeObject(Kryo.java:523) at >>> com.esotericsoftware.kryo.serializers.ObjectField.write(ObjectField.java:61) >>> at >>> com.esotericsoftware.kryo.serializers.FieldSerializer.write(FieldSerializer.java:495) >>> at com.esotericsoftware.kryo.Kryo.writeObject(Kryo.java:523) at >>> com.esotericsoftware.kryo.serializers.ObjectField.write(ObjectField.java:61) >>> at >>> com.esotericsoftware.kryo.serializers.FieldSerializer.write(FieldSerializer.java:495) >>> at com.esotericsoftware.kryo.Kryo.writeObject(Kryo.java:523) at >>> com.esotericsoftware.kryo.serializers.ObjectField.write(ObjectField.java:61) >>> at >>> com.esotericsoftware.kryo.serializers.FieldSerializer.write(FieldSerializer.java:495) >>> at com.esotericsoftware.kryo.Kryo.writeObject(Kryo.java:523) at >>> com.esotericsoftware.kryo.serializers.ObjectField.write(ObjectField.java:61) >>> at >>> com.esotericsoftware.kryo.serializers.FieldSerializer.write(FieldSerializer.java:495) >>> at com.esotericsoftware.kryo.Kryo.writeObject(Kryo.java:523) at >>> com.esotericsoftware.kryo.serializers.ObjectField.write(ObjectField.java:61) >>> at >>> com.esotericsoftware.kryo.serializers.FieldSerializer.write(FieldSerializer.java:495) >>> at com.esotericsoftware.kryo.Kryo.writeObject(Kryo.java:523) at >>> com.esotericsoftware.kryo.serializers.ObjectField.write(ObjectField.java:61) >>> at >>> com.esotericsoftware.kryo.serializers.FieldSerializer.write(FieldSerializer.java:495) >>> at com.esotericsoftware.kryo.Kryo.writeObject(Kryo.java:523) * >>> Any help would be highly appreciated. Thanks in advance. >>> >>> Warm Regards, >>> Debaditya >>> >> >> >
