Hi Shridhar,
the exception indicates that something is wrong with the object
serialization. Kryo is unable to serialize the given object.
It might help to
1) register a custom Kryo serializer in the ExecutionConfig or
2 ) pass dedicated type information using the types from
org.apache.flink.api.common.typeinfo.Types such that Kryo as the
"generic" serializer is not necessary anymore.
I hope this helps.
Regards,
Timo
On 28.01.21 12:41, Shridhar Kulkarni wrote:
All,
We are getting the exception, copied at the end of this post. The
exception is thrown when a new flink job is submitted; when Flink tries
to restore the previous state.
Environment:
Flink version: 1.10.1
State persistence: Hadoop 3.3
Zookeeper 3.5.8
Parallelism: 4
The code implements DataStream Transformation functions: ProcessFunction
-> KeySelector -> ProcessFunction
Inbound messages are partitioned by key "sourceId" which is a part of
the exception stack trace. SourceId is String type and is unique.
-------
Caused by: com.esotericsoftware.kryo.KryoException:
java.lang.IndexOutOfBoundsException: Index: 109, Size: 10
Serialization trace:
sourceId (com.contineo.ext.flink.core.ThingState)
-------
We have overridden
"org.apache.flink.streaming.api.functions.ProcessFunction.open()" method
Any help is appreciated
Exception stack trace:
2021-01-19 19:59:56,934 INFO
org.apache.flink.runtime.checkpoint.CheckpointCoordinator -
Checkpoint triggering task Source: Custom Source -> Process -> Process
(3/4) of job c957f40043721b5cab3161991999a7ed is not in state RUNNING
but DEPLOYING instead. Aborting checkpoint.
2021-01-19 19:59:57,358 INFO
org.apache.flink.runtime.executiongraph.ExecutionGraph -
Process -> Sink: Unnamed (4/4) (b2605627c2fffc83dd412b3e7565244d)
switched from RUNNING to FAILED.
java.lang.Exception: Exception while creating StreamOperatorStateContext.
at
org.apache.flink.streaming.api.operators.StreamTaskStateInitializerImpl.streamOperatorStateContext(StreamTaskStateInitializerImpl.java:191)
at
org.apache.flink.streaming.api.operators.AbstractStreamOperator.initializeState(AbstractStreamOperator.java:255)
at
org.apache.flink.streaming.runtime.tasks.StreamTask.initializeStateAndOpen(StreamTask.java:989)
at
org.apache.flink.streaming.runtime.tasks.StreamTask.lambda$beforeInvoke$0(StreamTask.java:453)
at
org.apache.flink.streaming.runtime.tasks.StreamTaskActionExecutor$SynchronizedStreamTaskActionExecutor.runThrowing(StreamTaskActionExecutor.java:94)
at
org.apache.flink.streaming.runtime.tasks.StreamTask.beforeInvoke(StreamTask.java:448)
at
org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:460)
at org.apache.flink.runtime.taskmanager.Task.doRun(Task.java:708)
at org.apache.flink.runtime.taskmanager.Task.run(Task.java:533)
at java.lang.Thread.run(Thread.java:748)
Caused by: org.apache.flink.util.FlinkException: Could not restore keyed
state backend for
LegacyKeyedProcessOperator_c27dcf7b54ef6bfd6cff02ca8870b681_(4/4) from
any of the 1 provided restore options.
at
org.apache.flink.streaming.api.operators.BackendRestorerProcedure.createAndRestore(BackendRestorerProcedure.java:135)
at
org.apache.flink.streaming.api.operators.StreamTaskStateInitializerImpl.keyedStatedBackend(StreamTaskStateInitializerImpl.java:304)
at
org.apache.flink.streaming.api.operators.StreamTaskStateInitializerImpl.streamOperatorStateContext(StreamTaskStateInitializerImpl.java:131)
... 9 more
Caused by: org.apache.flink.runtime.state.BackendBuildingException:
Failed when trying to restore heap backend
at
org.apache.flink.runtime.state.heap.HeapKeyedStateBackendBuilder.build(HeapKeyedStateBackendBuilder.java:116)
at
org.apache.flink.runtime.state.filesystem.FsStateBackend.createKeyedStateBackend(FsStateBackend.java:529)
at
org.apache.flink.streaming.api.operators.StreamTaskStateInitializerImpl.lambda$keyedStatedBackend$1(StreamTaskStateInitializerImpl.java:288)
at
org.apache.flink.streaming.api.operators.BackendRestorerProcedure.attemptCreateAndRestore(BackendRestorerProcedure.java:142)
at
org.apache.flink.streaming.api.operators.BackendRestorerProcedure.createAndRestore(BackendRestorerProcedure.java:121)
... 11 more
Caused by: com.esotericsoftware.kryo.KryoException:
java.lang.IndexOutOfBoundsException: Index: 109, Size: 10
Serialization trace:
sourceId (com.contineo.ext.flink.core.ThingState)
at
com.esotericsoftware.kryo.serializers.ObjectField.read(ObjectField.java:125)
at
com.esotericsoftware.kryo.serializers.FieldSerializer.read(FieldSerializer.java:528)
at com.esotericsoftware.kryo.Kryo.readClassAndObject(Kryo.java:761)
at
org.apache.flink.api.java.typeutils.runtime.kryo.KryoSerializer.deserialize(KryoSerializer.java:346)
at
org.apache.flink.runtime.state.heap.StateTableByKeyGroupReaders.lambda$createV2PlusReader$0(StateTableByKeyGroupReaders.java:77)
at
org.apache.flink.runtime.state.KeyGroupPartitioner$PartitioningResultKeyGroupReader.readMappingsInKeyGroup(KeyGroupPartitioner.java:297)
at
org.apache.flink.runtime.state.heap.HeapRestoreOperation.readKeyGroupStateData(HeapRestoreOperation.java:293)
at
org.apache.flink.runtime.state.heap.HeapRestoreOperation.readStateHandleStateData(HeapRestoreOperation.java:254)
at
org.apache.flink.runtime.state.heap.HeapRestoreOperation.restore(HeapRestoreOperation.java:154)
at
org.apache.flink.runtime.state.heap.HeapKeyedStateBackendBuilder.build(HeapKeyedStateBackendBuilder.java:114)
... 15 more
Caused by: java.lang.IndexOutOfBoundsException: Index: 109, Size: 10
at java.util.ArrayList.rangeCheck(ArrayList.java:659)
at java.util.ArrayList.get(ArrayList.java:435)
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)
... 24 more
Your help is highly appreciated,
Thanks,
Shridhar
