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Posted to dev@flink.apache.org by "Roman Khachatryan (Jira)" <ji...@apache.org> on 2021/03/12 17:20:00 UTC
[jira] [Created] (FLINK-21752) NullPointerException on restore in
PojoSerializer
Roman Khachatryan created FLINK-21752:
-----------------------------------------
Summary: NullPointerException on restore in PojoSerializer
Key: FLINK-21752
URL: https://issues.apache.org/jira/browse/FLINK-21752
Project: Flink
Issue Type: Bug
Components: API / Type Serialization System
Affects Versions: 1.9.3
Reporter: Roman Khachatryan
As originally reported in [thread|http://apache-flink-user-mailing-list-archive.2336050.n4.nabble.com/Schema-Evolution-Cannot-restore-from-savepoint-after-deleting-field-from-POJO-td42162.html], after removing a field from a class restore from savepoint fails with the following exception:
{code}
2021-03-10T20:51:30.406Z INFO org.apache.flink.runtime.taskmanager.Task:960 … (6/8) (d630d5ff0d7ae4fbc428b151abebab52) switched from RUNNING to FAILED. java.lang.Exception: Exception while creating StreamOperatorStateContext.
at org.apache.flink.streaming.api.operators.StreamTaskStateInitializerImpl.streamOperatorStateContext(StreamTaskStateInitializerImpl.java:195)
at org.apache.flink.streaming.api.operators.AbstractStreamOperator.initializeState(AbstractStreamOperator.java:253)
at org.apache.flink.streaming.runtime.tasks.StreamTask.initializeState(StreamTask.java:901)
at org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:415)
at org.apache.flink.runtime.taskmanager.Task.doRun(Task.java:705)
at org.apache.flink.runtime.taskmanager.Task.run(Task.java:530)
at java.lang.Thread.run(Thread.java:748)
Caused by: org.apache.flink.util.FlinkException: Could not restore keyed state backend for KeyedCoProcessOperator_c535ac415eeb524d67c88f4a481077d2_(6/8) 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:307)
at org.apache.flink.streaming.api.operators.StreamTaskStateInitializerImpl.streamOperatorStateContext(StreamTaskStateInitializerImpl.java:135)
... 6 common frames omitted
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.memory.MemoryStateBackend.createKeyedStateBackend(MemoryStateBackend.java:347)
at org.apache.flink.streaming.api.operators.StreamTaskStateInitializerImpl.lambda$keyedStatedBackend$1(StreamTaskStateInitializerImpl.java:291)
at org.apache.flink.streaming.api.operators.BackendRestorerProcedure.attemptCreateAndRestore(BackendRestorerProcedure.java:142)
at org.apache.flink.streaming.api.operators.BackendRestorerProcedure.createAndRestore(BackendRestorerProcedure.java:121)
... 8 common frames omitted
Caused by: java.lang.NullPointerException: null
at org.apache.flink.api.java.typeutils.runtime.PojoSerializer.<init>(PojoSerializer.java:123)
at org.apache.flink.api.java.typeutils.runtime.PojoSerializer.duplicate(PojoSerializer.java:186)
at org.apache.flink.api.java.typeutils.runtime.PojoSerializer.duplicate(PojoSerializer.java:56)
at org.apache.flink.api.common.typeutils.CompositeSerializer$PrecomputedParameters.precompute(CompositeSerializer.java:228)
at org.apache.flink.api.common.typeutils.CompositeSerializer.<init>(CompositeSerializer.java:51)
at org.apache.flink.runtime.state.ttl.TtlStateFactory$TtlSerializer.<init>(TtlStateFactory.java:250)
at org.apache.flink.runtime.state.ttl.TtlStateFactory$TtlSerializerSnapshot.createOuterSerializerWithNestedSerializers(TtlStateFactory.java:359)
at org.apache.flink.runtime.state.ttl.TtlStateFactory$TtlSerializerSnapshot.createOuterSerializerWithNestedSerializers(TtlStateFactory.java:330)
at org.apache.flink.api.common.typeutils.CompositeTypeSerializerSnapshot.restoreSerializer(CompositeTypeSerializerSnapshot.java:194)
at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193)
at java.util.Spliterators$ArraySpliterator.forEachRemaining(Spliterators.java:948)
at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:482)
at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:472)
at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:546)
at java.util.stream.AbstractPipeline.evaluateToArrayNode(AbstractPipeline.java:260)
at java.util.stream.ReferencePipeline.toArray(ReferencePipeline.java:505)
at org.apache.flink.api.common.typeutils.NestedSerializersSnapshotDelegate.snapshotsToRestoreSerializers(NestedSerializersSnapshotDelegate.java:225)
at org.apache.flink.api.common.typeutils.NestedSerializersSnapshotDelegate.getRestoredNestedSerializers(NestedSerializersSnapshotDelegate.java:83)
at org.apache.flink.api.common.typeutils.CompositeTypeSerializerSnapshot.restoreSerializer(CompositeTypeSerializerSnapshot.java:194)
at org.apache.flink.runtime.state.StateSerializerProvider.previousSchemaSerializer(StateSerializerProvider.java:189)
at org.apache.flink.runtime.state.StateSerializerProvider.currentSchemaSerializer(StateSerializerProvider.java:164)
at org.apache.flink.runtime.state.RegisteredKeyValueStateBackendMetaInfo.getStateSerializer(RegisteredKeyValueStateBackendMetaInfo.java:136)
at org.apache.flink.runtime.state.heap.StateTable.getStateSerializer(StateTable.java:315)
at org.apache.flink.runtime.state.heap.CopyOnWriteStateTable.createStateMap(CopyOnWriteStateTable.java:54)
at org.apache.flink.runtime.state.heap.CopyOnWriteStateTable.createStateMap(CopyOnWriteStateTable.java:36)
at org.apache.flink.runtime.state.heap.StateTable.<init>(StateTable.java:98)
at org.apache.flink.runtime.state.heap.CopyOnWriteStateTable.<init>(CopyOnWriteStateTable.java:49)
at org.apache.flink.runtime.state.heap.AsyncSnapshotStrategySynchronicityBehavior.newStateTable(AsyncSnapshotStrategySynchronicityBehavior.java:41)
at org.apache.flink.runtime.state.heap.HeapSnapshotStrategy.newStateTable(HeapSnapshotStrategy.java:243)
at org.apache.flink.runtime.state.heap.HeapRestoreOperation.createOrCheckStateForMetaInfo(HeapRestoreOperation.java:185)
at org.apache.flink.runtime.state.heap.HeapRestoreOperation.restore(HeapRestoreOperation.java:152)
at org.apache.flink.runtime.state.heap.HeapKeyedStateBackendBuilder.build(HeapKeyedStateBackendBuilder.java:114)
... 12 common frames omitted
{code}
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