That exception showed just once, but the following happens randomly (if I
re-run the job after stopping and restartign the cluster it doesn't show up
usually):
Caused by: java.io.IOException: Serializer consumed more bytes than the
record had. This indicates broken serialization. If you are using custom
serialization types (Value or Writable), check their serialization methods.
If you are using a Kryo-serialized type, check the corresponding Kryo
serializer.
at
org.apache.flink.runtime.io.network.api.serialization.SpillingAdaptiveSpanningRecordDeserializer.getNextRecord(SpillingAdaptiveSpanningRecordDeserializer.java:142)
at
org.apache.flink.runtime.io.network.api.reader.AbstractRecordReader.getNextRecord(AbstractRecordReader.java:65)
at
org.apache.flink.runtime.io.network.api.reader.MutableRecordReader.next(MutableRecordReader.java:34)
at
org.apache.flink.runtime.operators.util.ReaderIterator.next(ReaderIterator.java:73)
at
org.apache.flink.runtime.operators.FlatMapDriver.run(FlatMapDriver.java:101)
at org.apache.flink.runtime.operators.BatchTask.run(BatchTask.java:480)
at
org.apache.flink.runtime.operators.BatchTask.invoke(BatchTask.java:345)
at org.apache.flink.runtime.taskmanager.Task.run(Task.java:559)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.ArrayIndexOutOfBoundsException: -2
at java.util.ArrayList.elementData(ArrayList.java:418)
at java.util.ArrayList.get(ArrayList.java:431)
at
com.esotericsoftware.kryo.util.MapReferenceResolver.getReadObject(MapReferenceResolver.java:42)
at com.esotericsoftware.kryo.Kryo.readReferenceOrNull(Kryo.java:805)
at com.esotericsoftware.kryo.Kryo.readClassAndObject(Kryo.java:759)
at
org.apache.flink.api.java.typeutils.runtime.kryo.KryoSerializer.deserialize(KryoSerializer.java:228)
at
org.apache.flink.api.java.typeutils.runtime.PojoSerializer.deserialize(PojoSerializer.java:431)
at
org.apache.flink.api.java.typeutils.runtime.TupleSerializer.deserialize(TupleSerializer.java:135)
at
org.apache.flink.api.java.typeutils.runtime.TupleSerializer.deserialize(TupleSerializer.java:30)
at
org.apache.flink.runtime.plugable.NonReusingDeserializationDelegate.read(NonReusingDeserializationDelegate.java:55)
at
org.apache.flink.runtime.io.network.api.serialization.SpillingAdaptiveSpanningRecordDeserializer.getNextRecord(SpillingAdaptiveSpanningRecordDeserializer.java:124)
On Sun, May 15, 2016 at 10:58 AM, Flavio Pompermaier <pomperma...@okkam.it>
wrote:
> Hi to all,
> in my last run of a job I received this weird Kryo Exception in one of the
> TaskManager...obviously this class in not mentioned anywhere, neither in my
> project nor in flink...
> Any help is appreciated!
>
> Best,
> Flavio
>
> INFO org.apache.flink.runtime.taskmanager.Task - CHAIN GroupReduce
> (GroupReduce at createResult(IndexMappingExecutor.java:42)) -> Map (Map at
> main(Jsonizer.java:128)) (4/9) switched to FAILED with exception.
> java.lang.Exception: The data preparation for task 'CHAIN GroupReduce
> (GroupReduce at createResult(IndexMappingExecutor.java:42)) -> Map (Map at
> main(Jsonizer.java:128))' , caused an error: Error obtaining the sorted
> input: Thread 'SortMerger spilling thread' terminated due to an exception:
> Unable to find class: java.ttil.HashSet
> at
> org.apache.flink.runtime.operators.BatchTask.run(BatchTask.java:456)
> at
> org.apache.flink.runtime.operators.BatchTask.invoke(BatchTask.java:345)
> at org.apache.flink.runtime.taskmanager.Task.run(Task.java:559)
> at java.lang.Thread.run(Thread.java:745)
> Caused by: java.lang.RuntimeException: Error obtaining the sorted input:
> Thread 'SortMerger spilling thread' terminated due to an exception: Unable
> to find class: java.ttil.HashSet
> at
> org.apache.flink.runtime.operators.sort.UnilateralSortMerger.getIterator(UnilateralSortMerger.java:619)
> at
> org.apache.flink.runtime.operators.BatchTask.getInput(BatchTask.java:1079)
> at
> org.apache.flink.runtime.operators.GroupReduceDriver.prepare(GroupReduceDriver.java:94)
> at
> org.apache.flink.runtime.operators.BatchTask.run(BatchTask.java:450)
> ... 3 more
> Caused by: java.io.IOException: Thread 'SortMerger spilling thread'
> terminated due to an exception: Unable to find class: java.ttil.HashSet
> at
> org.apache.flink.runtime.operators.sort.UnilateralSortMerger$ThreadBase.run(UnilateralSortMerger.java:800)
> Caused by: com.esotericsoftware.kryo.KryoException: Unable to find class:
> java.ttil.HashSet
> at
> com.esotericsoftware.kryo.util.DefaultClassResolver.readName(DefaultClassResolver.java:138)
> at
> com.esotericsoftware.kryo.util.DefaultClassResolver.readClass(DefaultClassResolver.java:115)
> at com.esotericsoftware.kryo.Kryo.readClass(Kryo.java:641)
> at com.esotericsoftware.kryo.Kryo.readClassAndObject(Kryo.java:752)
> at
> com.esotericsoftware.kryo.serializers.MapSerializer.read(MapSerializer.java:143)
> at
> com.esotericsoftware.kryo.serializers.MapSerializer.read(MapSerializer.java:21)
> at com.esotericsoftware.kryo.Kryo.readClassAndObject(Kryo.java:761)
> at
> org.apache.flink.api.java.typeutils.runtime.kryo.KryoSerializer.deserialize(KryoSerializer.java:228)
> at
> org.apache.flink.api.java.typeutils.runtime.kryo.KryoSerializer.deserialize(KryoSerializer.java:242)
> at
> org.apache.flink.api.java.typeutils.runtime.kryo.KryoSerializer.copy(KryoSerializer.java:252)
> at
> org.apache.flink.api.java.typeutils.runtime.PojoSerializer.copy(PojoSerializer.java:556)
> at
> org.apache.flink.api.java.typeutils.runtime.TupleSerializerBase.copy(TupleSerializerBase.java:75)
> at
> org.apache.flink.runtime.operators.sort.NormalizedKeySorter.writeToOutput(NormalizedKeySorter.java:499)
> at
> org.apache.flink.runtime.operators.sort.UnilateralSortMerger$SpillingThread.go(UnilateralSortMerger.java:1344)
> at
> org.apache.flink.runtime.operators.sort.UnilateralSortMerger$ThreadBase.run(UnilateralSortMerger.java:796)
> Caused by: java.lang.ClassNotFoundException: java.ttil.HashSet
> at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
> at java.lang.Class.forName0(Native Method)
> at java.lang.Class.forName(Class.java:348)
> at
> com.esotericsoftware.kryo.util.DefaultClassResolver.readName(DefaultClassResolver.java:136)
> ... 14 more
>
>
