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From "Robert Metzger (JIRA)" <j...@apache.org>
Subject [jira] [Created] (FLINK-2019) Grouping by Joda DateTime field fails with Kryo exception
Date Fri, 15 May 2015 08:52:00 GMT
Robert Metzger created FLINK-2019:
-------------------------------------

             Summary: 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


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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