Igal Shilman created FLINK-19330:
------------------------------------
Summary: Recovery with async operations fails due to unitialized
runtimeContext
Key: FLINK-19330
URL: https://issues.apache.org/jira/browse/FLINK-19330
Project: Flink
Issue Type: Bug
Components: Stateful Functions
Reporter: Igal Shilman
In Flink 1.11, the AbstractStreamOperator's runtimeContext is not fully
initialized when executing `AbstractStreamOperator#intializeState()` in
particular KeyedStateStore is set after intializeState was finished.
See:
https://github.com/apache/flink/blob/master/flink-streaming-java/src/main/java/org/apache/flink/streaming/api/operators/AbstractStreamOperator.java#L258,L259
This behaviour was changed from Flink 1.10->Flink 1.11.
StateFun's FunctionGroupOperator performs its initialization logic at
initalizeState, and it requires an already initialized runtimeContext.
This situation causes the following failure after recovery:
{code}
java.lang.RuntimeException: java.lang.NullPointerException: Keyed state can
only be used on a 'keyed stream', i.e., after a 'keyBy()' operation.
at
org.apache.flink.runtime.state.AbstractKeyedStateBackend.lambda$applyToAllKeys$0(AbstractKeyedStateBackend.java:256)
~[flink-dist_2.12-1.11.1.jar:1.11.1]
at java.util.Iterator.forEachRemaining(Iterator.java:116) ~[?:1.8.0_265]
at
java.util.Spliterators$IteratorSpliterator.forEachRemaining(Spliterators.java:1801)
~[?:1.8.0_265]
at
java.util.stream.ReferencePipeline$Head.forEach(ReferencePipeline.java:647)
~[?:1.8.0_265]
at
org.apache.flink.runtime.state.AbstractKeyedStateBackend.applyToAllKeys(AbstractKeyedStateBackend.java:249)
~[flink-dist_2.12-1.11.1.jar:1.11.1]
at
org.apache.flink.statefun.flink.core.functions.AsyncOperationFailureNotifier.fireExpiredAsyncOperations(AsyncOperationFailureNotifier.java:42)
~[statefun-flink-core.jar:2.3-SNAPSHOT]
at
org.apache.flink.statefun.flink.core.functions.FunctionGroupOperator.initializeState(FunctionGroupOperator.java:160)
~[statefun-flink-core.jar:2.3-SNAPSHOT]
at
org.apache.flink.streaming.api.operators.StreamOperatorStateHandler.initializeOperatorState(StreamOperatorStateHandler.java:106)
~[flink-dist_2.12-1.11.1.jar:1.11.1]
at
org.apache.flink.streaming.api.operators.AbstractStreamOperator.initializeState(AbstractStreamOperator.java:258)
~[flink-dist_2.12-1.11.1.jar:1.11.1]
at
org.apache.flink.streaming.runtime.tasks.OperatorChain.initializeStateAndOpenOperators(OperatorChain.java:290)
~[flink-dist_2.12-1.11.1.jar:1.11.1]
at
org.apache.flink.streaming.runtime.tasks.StreamTask.lambda$beforeInvoke$0(StreamTask.java:473)
~[flink-dist_2.12-1.11.1.jar:1.11.1]
at
org.apache.flink.streaming.runtime.tasks.StreamTaskActionExecutor$1.runThrowing(StreamTaskActionExecutor.java:47)
~[flink-dist_2.12-1.11.1.jar:1.11.1]
at
org.apache.flink.streaming.runtime.tasks.StreamTask.beforeInvoke(StreamTask.java:469)
~[flink-dist_2.12-1.11.1.jar:1.11.1]
at
org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:522)
~[flink-dist_2.12-1.11.1.jar:1.11.1]
at org.apache.flink.runtime.taskmanager.Task.doRun(Task.java:721)
~[flink-dist_2.12-1.11.1.jar:1.11.1]
at org.apache.flink.runtime.taskmanager.Task.run(Task.java:546)
~[flink-dist_2.12-1.11.1.jar:1.11.1]
at java.lang.Thread.run(Thread.java:748) ~[?:1.8.0_265]
Caused by: java.lang.NullPointerException: Keyed state can only be used on a
'keyed stream', i.e., after a 'keyBy()' operation.
at
org.apache.flink.util.Preconditions.checkNotNull(Preconditions.java:75)
~[flink-dist_2.12-1.11.1.jar:1.11.1]
at
org.apache.flink.streaming.api.operators.StreamingRuntimeContext.checkPreconditionsAndGetKeyedStateStore(StreamingRuntimeContext.java:223)
~[flink-dist_2.12-1.11.1.jar:1.11.1]
at
org.apache.flink.streaming.api.operators.StreamingRuntimeContext.getState(StreamingRuntimeContext.java:188)
~[flink-dist_2.12-1.11.1.jar:1.11.1]
at
org.apache.flink.statefun.flink.core.state.FlinkState.createFlinkStateAccessor(FlinkState.java:69)
~[statefun-flink-core.jar:2.3-SNAPSHOT]
at
org.apache.flink.statefun.flink.core.state.FlinkStateBinder.bindValue(FlinkStateBinder.java:48)
~[statefun-flink-core.jar:2.3-SNAPSHOT]
at
org.apache.flink.statefun.sdk.state.StateBinder.bind(StateBinder.java:30)
~[statefun-flink-distribution.jar:2.3-SNAPSHOT]
at
org.apache.flink.statefun.flink.core.state.PersistedStates.findReflectivelyAndBind(PersistedStates.java:46)
~[statefun-flink-core.jar:2.3-SNAPSHOT]
at
org.apache.flink.statefun.flink.core.functions.StatefulFunctionRepository.load(StatefulFunctionRepository.java:74)
~[statefun-flink-core.jar:2.3-SNAPSHOT]
at
org.apache.flink.statefun.flink.core.functions.StatefulFunctionRepository.get(StatefulFunctionRepository.java:59)
~[statefun-flink-core.jar:2.3-SNAPSHOT]
at
org.apache.flink.statefun.flink.core.functions.LocalFunctionGroup.newActivation(LocalFunctionGroup.java:73)
~[statefun-flink-core.jar:2.3-SNAPSHOT]
at
org.apache.flink.statefun.flink.core.functions.LocalFunctionGroup.enqueue(LocalFunctionGroup.java:50)
~[statefun-flink-core.jar:2.3-SNAPSHOT]
at
org.apache.flink.statefun.flink.core.functions.Reductions.enqueue(Reductions.java:148)
~[statefun-flink-core.jar:2.3-SNAPSHOT]
at
org.apache.flink.statefun.flink.core.functions.Reductions.enqueueAsyncOperationAfterRestore(Reductions.java:154)
~[statefun-flink-core.jar:2.3-SNAPSHOT]
at
org.apache.flink.statefun.flink.core.functions.AsyncOperationFailureNotifier.process(AsyncOperationFailureNotifier.java:66)
~[statefun-flink-core.jar:2.3-SNAPSHOT]
at
org.apache.flink.statefun.flink.core.functions.AsyncOperationFailureNotifier.process(AsyncOperationFailureNotifier.java:30)
~[statefun-flink-core.jar:2.3-SNAPSHOT]
at
org.apache.flink.runtime.state.AbstractKeyedStateBackend.lambda$applyToAllKeys$0(AbstractKeyedStateBackend.java:252)
~[flink-dist_2.12-1.11.1.jar:1.11.1]
... 16 more
{code}
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