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https://issues.apache.org/jira/browse/FLINK-2019?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Robert Metzger resolved FLINK-2019.
-----------------------------------
Resolution: Fixed
Fix Version/s: 0.9
Fixed in http://git-wip-us.apache.org/repos/asf/flink/commit/1698f7e0.
> Grouping by Joda DateTime field fails with Kryo exception
> ---------------------------------------------------------
>
> Key: FLINK-2019
> URL: https://issues.apache.org/jira/browse/FLINK-2019
> Project: Flink
> Issue Type: Improvement
> Components: Type Serialization System
> Affects Versions: 0.9
> Reporter: Robert Metzger
> Assignee: Robert Metzger
> Fix For: 0.9
>
>
> Running
> {code}
> DataSet<Tuple3<String, Integer, DateTime>> counts =
> text.flatMap(new LineSplitter()).groupBy(0, 2).sum(1);
> {code}
> fails with
> {code}
> com.esotericsoftware.kryo.KryoException: Class cannot be created (missing
> no-arg constructor): org.joda.time.chrono.ISOChronology
> Serialization trace:
> iChronology (org.joda.time.DateTime)
> at
> com.esotericsoftware.kryo.Kryo$DefaultInstantiatorStrategy.newInstantiatorOf(Kryo.java:1228)
> at com.esotericsoftware.kryo.Kryo.newInstantiator(Kryo.java:1049)
> at com.esotericsoftware.kryo.Kryo.newInstance(Kryo.java:1058)
> at
> com.esotericsoftware.kryo.serializers.FieldSerializer.createCopy(FieldSerializer.java:620)
> at
> com.esotericsoftware.kryo.serializers.FieldSerializer.copy(FieldSerializer.java:624)
> at com.esotericsoftware.kryo.Kryo.copy(Kryo.java:862)
> at
> com.esotericsoftware.kryo.serializers.ObjectField.copy(ObjectField.java:140)
> at
> com.esotericsoftware.kryo.serializers.FieldSerializer.copy(FieldSerializer.java:634)
> at com.esotericsoftware.kryo.Kryo.copy(Kryo.java:862)
> at
> org.apache.flink.api.java.typeutils.runtime.GenericTypeComparator.setReference(GenericTypeComparator.java:77)
> at
> org.apache.flink.api.java.typeutils.runtime.GenericTypeComparator.setReference(GenericTypeComparator.java:36)
> at
> org.apache.flink.api.java.typeutils.runtime.TupleComparator.setReference(TupleComparator.java:72)
> at
> org.apache.flink.api.java.typeutils.runtime.TupleComparator.setReference(TupleComparator.java:30)
> at
> org.apache.flink.runtime.util.NonReusingKeyGroupedIterator.nextKey(NonReusingKeyGroupedIterator.java:115)
> at
> org.apache.flink.runtime.operators.chaining.SynchronousChainedCombineDriver.sortAndCombine(SynchronousChainedCombineDriver.java:233)
> at
> org.apache.flink.runtime.operators.chaining.SynchronousChainedCombineDriver.close(SynchronousChainedCombineDriver.java:194)
> at
> org.apache.flink.runtime.operators.chaining.ChainedFlatMapDriver.close(ChainedFlatMapDriver.java:87)
> at
> org.apache.flink.runtime.operators.DataSourceTask.invoke(DataSourceTask.java:189)
> at org.apache.flink.runtime.taskmanager.Task.run(Task.java:562)
> at java.lang.Thread.run(Thread.java:745)
> {code}
> The issue has been reported by [~f.pompermaier]:
> http://apache-flink-user-mailing-list-archive.2336050.n4.nabble.com/KryoException-with-joda-Datetime-td1248.html
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