Minor Description
Hi, I started to experiment with Parquet using Protobuf.
When I use the standard Protobuf class: com.twitter.data.proto.tutorial.AddressBookProtos
The code which I run, can be found here: https://github.com/FelixNeutatz/incubator-flink/blob/ParquetAtFlink/flink-addons/flink-hadoop-compatibility/src/main/java/org/apache/flink/hadoopcompatibility/mapreduce/example/ParquetProtobufOutput.java
I get the following exception:
Exception in thread "main" java.lang.Exception: Deserializing the InputFormat (org.apache.flink.api.java.io.CollectionInputFormat) failed: Could not read the user code wrapper: Error while deserializing element from collection
at org.apache.flink.runtime.jobgraph.InputFormatVertex.initializeOnMaster(InputFormatVertex.java:60)
at org.apache.flink.runtime.jobmanager.JobManager$$anonfun$receiveWithLogMessages$1$$anonfun$applyOrElse$5.apply(JobManager.scala:179)
at org.apache.flink.runtime.jobmanager.JobManager$$anonfun$receiveWithLogMessages$1$$anonfun$applyOrElse$5.apply(JobManager.scala:172)
at scala.collection.Iterator$class.foreach(Iterator.scala:727)
at scala.collection.AbstractIterator.foreach(Iterator.scala:1157)
at scala.collection.IterableLike$class.foreach(IterableLike.scala:72)
at scala.collection.AbstractIterable.foreach(Iterable.scala:54)
at org.apache.flink.runtime.jobmanager.JobManager$$anonfun$receiveWithLogMessages$1.applyOrElse(JobManager.scala:172)
at scala.runtime.AbstractPartialFunction$mcVL$sp.apply$mcVL$sp(AbstractPartialFunction.scala:33)
at scala.runtime.AbstractPartialFunction$mcVL$sp.apply(AbstractPartialFunction.scala:33)
at scala.runtime.AbstractPartialFunction$mcVL$sp.apply(AbstractPartialFunction.scala:25)
at org.apache.flink.runtime.ActorLogMessages$$anon$1.apply(ActorLogMessages.scala:34)
at org.apache.flink.runtime.ActorLogMessages$$anon$1.apply(ActorLogMessages.scala:27)
at scala.PartialFunction$class.applyOrElse(PartialFunction.scala:118)
at org.apache.flink.runtime.ActorLogMessages$$anon$1.applyOrElse(ActorLogMessages.scala:27)
at akka.actor.Actor$class.aroundReceive(Actor.scala:465)
at org.apache.flink.runtime.jobmanager.JobManager.aroundReceive(JobManager.scala:52)
at akka.actor.ActorCell.receiveMessage(ActorCell.scala:516)
at akka.actor.ActorCell.invoke(ActorCell.scala:487)
at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:254)
at akka.dispatch.Mailbox.run(Mailbox.scala:221)
at akka.dispatch.Mailbox.exec(Mailbox.scala:231)
at scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260)
at scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339)
at scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979)
at scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107)
Caused by: org.apache.flink.runtime.operators.util.CorruptConfigurationException: Could not read the user code wrapper: Error while deserializing element from collection
at org.apache.flink.runtime.operators.util.TaskConfig.getStubWrapper(TaskConfig.java:285)
at org.apache.flink.runtime.jobgraph.InputFormatVertex.initializeOnMaster(InputFormatVertex.java:57)
... 25 more
Caused by: java.io.IOException: Error while deserializing element from collection
at org.apache.flink.api.java.io.CollectionInputFormat.readObject(CollectionInputFormat.java:108)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:1017)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1893)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1798)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350)
at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1990)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1915)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1798)
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.util.InstantiationUtil.readObjectFromConfig(InstantiationUtil.java:236)
at org.apache.flink.runtime.operators.util.TaskConfig.getStubWrapper(TaskConfig.java:281)
... 26 more
Caused by: com.esotericsoftware.kryo.KryoException: java.lang.UnsupportedOperationException
Serialization trace:
phone_ (com.twitter.data.proto.tutorial.AddressBookProtos$Person)
at com.esotericsoftware.kryo.serializers.ObjectField.read(ObjectField.java:125)
at com.esotericsoftware.kryo.serializers.FieldSerializer.read(FieldSerializer.java:528)
at com.esotericsoftware.kryo.Kryo.readClassAndObject(Kryo.java:761)
at org.apache.flink.api.java.typeutils.runtime.KryoSerializer.deserialize(KryoSerializer.java:130)
at org.apache.flink.api.java.typeutils.runtime.TupleSerializer.deserialize(TupleSerializer.java:106)
at org.apache.flink.api.java.typeutils.runtime.TupleSerializer.deserialize(TupleSerializer.java:30)
at org.apache.flink.api.java.io.CollectionInputFormat.readObject(CollectionInputFormat.java:103)
... 42 more
Caused by: java.lang.UnsupportedOperationException
at java.util.Collections$UnmodifiableCollection.add(Collections.java:1075)
at com.esotericsoftware.kryo.serializers.CollectionSerializer.read(CollectionSerializer.java:109)
at com.esotericsoftware.kryo.serializers.CollectionSerializer.read(CollectionSerializer.java:22)
at com.esotericsoftware.kryo.Kryo.readObject(Kryo.java:679)
at com.esotericsoftware.kryo.serializers.ObjectField.read(ObjectField.java:106)
... 48 more