[
https://issues.apache.org/jira/browse/FLINK-2800?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14944991#comment-14944991
]
Fabian Hueske commented on FLINK-2800:
--------------------------------------
I tried to reproduce the issue by crossing two small data sets with generic
types (serialized using Kryo) but that worked without problems.
Do you register any Kryo types in the ExecutionConfig?
> kryo serialization problem
> --------------------------
>
> Key: FLINK-2800
> URL: https://issues.apache.org/jira/browse/FLINK-2800
> Project: Flink
> Issue Type: Bug
> Components: Type Serialization System
> Affects Versions: 1.0
> Environment: linux ubuntu 12.04 LTS, Java 7
> Reporter: Stefano Bortoli
>
> Performing a cross of two dataset of POJOs I have got the exception below.
> The first time I run the process, there was no problem. When I run it the
> second time, I have got the exception. My guess is that it could be a race
> condition related to the reuse of the Kryo serializer object. However, it
> could also be "a bug where type registrations are not properly forwarded to
> all Serializers", as suggested by Stephan.
> ------------------------------------------------------------------------
> 2015-10-01 18:18:21 INFO JobClient:161 - 10/01/2015 18:18:21 Cross(Cross at
> main(FlinkMongoHadoop2LinkPOI2CDA.java:160))(3/4) switched to FAILED
> com.esotericsoftware.kryo.KryoException: Encountered unregistered class ID:
> 114
> at
> com.esotericsoftware.kryo.util.DefaultClassResolver.readClass(DefaultClassResolver.java:119)
> at com.esotericsoftware.kryo.Kryo.readClass(Kryo.java:641)
> at com.esotericsoftware.kryo.Kryo.readClassAndObject(Kryo.java:752)
> at
> org.apache.flink.api.java.typeutils.runtime.kryo.KryoSerializer.deserialize(KryoSerializer.java:210)
> at
> org.apache.flink.api.java.typeutils.runtime.TupleSerializer.deserialize(TupleSerializer.java:127)
> at
> org.apache.flink.api.java.typeutils.runtime.TupleSerializer.deserialize(TupleSerializer.java:30)
> at
> org.apache.flink.runtime.operators.resettable.AbstractBlockResettableIterator.getNextRecord(AbstractBlockResettableIterator.java:180)
> at
> org.apache.flink.runtime.operators.resettable.BlockResettableMutableObjectIterator.next(BlockResettableMutableObjectIterator.java:111)
> at
> org.apache.flink.runtime.operators.CrossDriver.runBlockedOuterSecond(CrossDriver.java:309)
> at
> org.apache.flink.runtime.operators.CrossDriver.run(CrossDriver.java:162)
> at
> org.apache.flink.runtime.operators.RegularPactTask.run(RegularPactTask.java:489)
> at
> org.apache.flink.runtime.operators.RegularPactTask.invoke(RegularPactTask.java:354)
> at org.apache.flink.runtime.taskmanager.Task.run(Task.java:581)
> at java.lang.Thread.run(Thread.java:745)
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
