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https://issues.apache.org/jira/browse/FLINK-7484?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16460905#comment-16460905
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Aljoscha Krettek commented on FLINK-7484:
-----------------------------------------
cc [~srichter]
> CaseClassSerializer.duplicate() does not perform proper deep copy
> -----------------------------------------------------------------
>
> Key: FLINK-7484
> URL: https://issues.apache.org/jira/browse/FLINK-7484
> Project: Flink
> Issue Type: Sub-task
> Components: CEP, DataStream API, Scala API
> Affects Versions: 1.3.2
> Environment: Flink 1.3.2 , Yarn Cluster, FsStateBackend
> Reporter: Shashank Agarwal
> Assignee: Aljoscha Krettek
> Priority: Blocker
> Fix For: 1.4.0, 1.3.4
>
>
> I am using many CEP's and Global Window. I am getting following error
> sometimes and application crashes. I have checked logically there's no flow
> in the program. Here ItemPojo is a Pojo class and we are using
> java.utill.List[ItemPojo]. We are using Scala DataStream API please find
> attached logs.
> {code}
> 2017-08-17 10:04:12,814 INFO org.apache.flink.runtime.taskmanager.Task
> - TriggerWindow(GlobalWindows(),
> ListStateDescriptor{serializer=org.apache.flink.api.common.typeutils.base.ListSerializer@6d36aa3c},
> co.thirdwatch.trigger.TransactionTrigger@5707c1cb,
> WindowedStream.apply(WindowedStream.scala:582)) -> Flat Map -> Map -> Sink:
> Saving CSV Features Sink (1/2) (06c0d4d231bc620ba9e7924b9b0da8d1) switched
> from RUNNING to FAILED.
> com.esotericsoftware.kryo.KryoException: java.lang.IndexOutOfBoundsException:
> Index: 7, Size: 5
> Serialization trace:
> category (co.thirdwatch.pojo.ItemPojo)
> underlying (scala.collection.convert.Wrappers$SeqWrapper)
> 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 com.twitter.chill.TraversableSerializer.read(Traversable.scala:43)
> at com.twitter.chill.TraversableSerializer.read(Traversable.scala:21)
> at com.esotericsoftware.kryo.Kryo.readObject(Kryo.java:679)
> at
> com.esotericsoftware.kryo.serializers.ObjectField.read(ObjectField.java:106)
> at
> com.esotericsoftware.kryo.serializers.FieldSerializer.read(FieldSerializer.java:528)
> at com.esotericsoftware.kryo.Kryo.readObject(Kryo.java:657)
> at
> org.apache.flink.api.java.typeutils.runtime.kryo.KryoSerializer.copy(KryoSerializer.java:190)
> at
> org.apache.flink.api.scala.typeutils.CaseClassSerializer.copy(CaseClassSerializer.scala:101)
> at
> org.apache.flink.api.scala.typeutils.CaseClassSerializer.copy(CaseClassSerializer.scala:32)
> at
> org.apache.flink.runtime.state.ArrayListSerializer.copy(ArrayListSerializer.java:74)
> at
> org.apache.flink.runtime.state.ArrayListSerializer.copy(ArrayListSerializer.java:34)
> at
> org.apache.flink.runtime.state.heap.CopyOnWriteStateTable.get(CopyOnWriteStateTable.java:279)
> at
> org.apache.flink.runtime.state.heap.CopyOnWriteStateTable.get(CopyOnWriteStateTable.java:296)
> at
> org.apache.flink.runtime.state.heap.HeapListState.add(HeapListState.java:77)
> at
> org.apache.flink.streaming.runtime.operators.windowing.WindowOperator.processElement(WindowOperator.java:442)
> at
> org.apache.flink.streaming.runtime.io.StreamInputProcessor.processInput(StreamInputProcessor.java:206)
> at
> org.apache.flink.streaming.runtime.tasks.OneInputStreamTask.run(OneInputStreamTask.java:69)
> at
> org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:263)
> at org.apache.flink.runtime.taskmanager.Task.run(Task.java:702)
> at java.lang.Thread.run(Thread.java:745)
> Caused by: java.lang.IndexOutOfBoundsException: Index: 7, Size: 5
> at java.util.ArrayList.rangeCheck(ArrayList.java:653)
> at java.util.ArrayList.get(ArrayList.java:429)
> at
> com.esotericsoftware.kryo.util.MapReferenceResolver.getReadObject(MapReferenceResolver.java:42)
> at com.esotericsoftware.kryo.Kryo.readReferenceOrNull(Kryo.java:805)
> at com.esotericsoftware.kryo.Kryo.readObjectOrNull(Kryo.java:728)
> at
> com.esotericsoftware.kryo.serializers.ObjectField.read(ObjectField.java:113)
> ... 22 more
> 2017-08-17 10:04:12,816 INFO org.apache.flink.runtime.taskmanager.Task
> - Freeing task resources for TriggerWindow(GlobalWindows(),
> ListStateDescriptor{serializer=org.apache.flink.api.common.typeutils.base.ListSerializer@6d36aa3c},
> co.thirdwatch.trigger.TransactionTrigger@5707c1cb,
> WindowedStream.apply(WindowedStream.scala:582)) -> Flat Map -> Map -> Sink:
> Saving CSV Features Sink (1/2) (06c0d4d231bc620ba9e7924b9b0da8d1).
> 2017-08-17 10:04:12,816 INFO org.apache.flink.runtime.taskmanager.Task
> - Ensuring all FileSystem streams are closed for task
> TriggerWindow(GlobalWindows(),
> ListStateDescriptor{serializer=org.apache.flink.api.common.typeutils.base.ListSerializer@6d36aa3c},
> co.thirdwatch.trigger.TransactionTrigger@5707c1cb,
> WindowedStream.apply(WindowedStream.scala:582)) -> Flat Map -> Map -> Sink:
> Saving CSV Features Sink (1/2) (06c0d4d231bc620ba9e7924b9b0da8d1) [FAILED]
> {code}
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