Shashank Agarwal created FLINK-7484:
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             Summary: com.esotericsoftware.kryo.KryoException: 
java.lang.IndexOutOfBoundsException: Index: 7, Size: 5
                 Key: FLINK-7484
                 URL: https://issues.apache.org/jira/browse/FLINK-7484
             Project: Flink
          Issue Type: Bug
          Components: DataStream API, Scala API
    Affects Versions: 1.3.2
         Environment: Flink 1.3.2 , Yarn Cluster, FsStateBackend
            Reporter: Shashank Agarwal


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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