Roman Khachatryan created FLINK-22966:
-----------------------------------------
Summary: NPE in StateAssignmentOperation when rescaling
Key: FLINK-22966
URL: https://issues.apache.org/jira/browse/FLINK-22966
Project: Flink
Issue Type: Bug
Components: Runtime / Checkpointing
Affects Versions: 1.13.1
Reporter: Roman Khachatryan
Fix For: 1.14.0, 1.13.2
[Reported|http://apache-flink-user-mailing-list-archive.2336050.n4.nabble.com/NPE-when-restoring-from-savepoint-in-Flink-1-13-1-application-td44345.html]
on user ML.
>From the code, it looks like if an operator doesn't have at least one subtask
>with state , then some variables in
>StateAssignmentOperation.reAssignSubKeyedStates can be null:
{code}
subManagedKeyedState.isEmpty() && subRawKeyedState.isEmpty()
{code}
{code}
2021-06-09 13:08:59,849 WARN
org.apache.flink.client.deployment.application.DetachedApplicationRunner [] -
Could not execute application:
org.apache.flink.client.program.ProgramInvocationException: The main method
caused an error: Failed to execute job '<censored>'.
at
org.apache.flink.client.program.PackagedProgram.callMainMethod(PackagedProgram.java:372)
~[flink-dist_2.12-1.13.1.jar:1.13.1]
at
org.apache.flink.client.program.PackagedProgram.invokeInteractiveModeForExecution(PackagedProgram.java:222)
~[flink-dist_2.12-1.13.1.jar:1.13.1]
at
org.apache.flink.client.ClientUtils.executeProgram(ClientUtils.java:114)
~[flink-dist_2.12-1.13.1.jar:1.13.1]
at
org.apache.flink.client.deployment.application.DetachedApplicationRunner.tryExecuteJobs(DetachedApplicationRunner.java:84)
~[flink-dist_2.12-1.13.1.jar:1.13.1]
at
org.apache.flink.client.deployment.application.DetachedApplicationRunner.run(DetachedApplicationRunner.java:70)
~[flink-dist_2.12-1.13.1.jar:1.13.1]
at
org.apache.flink.runtime.webmonitor.handlers.JarRunHandler.lambda$handleRequest$0(JarRunHandler.java:102)
~[flink-dist_2.12-1.13.1.jar:1.13.1]
at
java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java:1700)
[?:?]
at
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515) [?:?]
at java.util.concurrent.FutureTask.run(FutureTask.java:264) [?:?]
at
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:304)
[?:?]
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
[?:?]
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
[?:?]
at java.lang.Thread.run(Thread.java:834) [?:?]
Caused by: org.apache.flink.util.FlinkException: Failed to execute job
'<censored>'.
at
org.apache.flink.streaming.api.environment.StreamExecutionEnvironment.executeAsync(StreamExecutionEnvironment.java:1970)
~[flink-dist_2.12-1.13.1.jar:1.13.1]
at
org.apache.flink.client.program.StreamContextEnvironment.executeAsync(StreamContextEnvironment.java:135)
~[flink-dist_2.12-1.13.1.jar:1.13.1]
at
org.apache.flink.client.program.StreamContextEnvironment.execute(StreamContextEnvironment.java:76)
~[flink-dist_2.12-1.13.1.jar:1.13.1]
at
org.apache.flink.streaming.api.environment.StreamExecutionEnvironment.execute(StreamExecutionEnvironment.java:1834)
~[flink-dist_2.12-1.13.1.jar:1.13.1]
at
org.apache.flink.streaming.api.scala.StreamExecutionEnvironment.execute(StreamExecutionEnvironment.scala:801)
~[flink-dist_2.12-1.13.1.jar:1.13.1]
at <censored> ~[?:?]
at <censored> ~[?:?]
at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native
Method) ~[?:?]
at
jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
~[?:?]
at
jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
~[?:?]
at java.lang.reflect.Method.invoke(Method.java:566) ~[?:?]
at
org.apache.flink.client.program.PackagedProgram.callMainMethod(PackagedProgram.java:355)
~[flink-dist_2.12-1.13.1.jar:1.13.1]
... 12 more
Caused by: java.lang.RuntimeException:
org.apache.flink.runtime.client.JobInitializationException: Could not start the
JobMaster.
at
org.apache.flink.util.ExceptionUtils.rethrow(ExceptionUtils.java:316)
~[flink-dist_2.12-1.13.1.jar:1.13.1]
at
org.apache.flink.util.function.FunctionUtils.lambda$uncheckedFunction$2(FunctionUtils.java:75)
~[flink-dist_2.12-1.13.1.jar:1.13.1]
at
java.util.concurrent.CompletableFuture$UniApply.tryFire(CompletableFuture.java:642)
~[?:?]
at
java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:478)
~[?:?]
... 1 more
Caused by: org.apache.flink.runtime.client.JobInitializationException:
Could not start the JobMaster.
at
org.apache.flink.runtime.jobmaster.DefaultJobMasterServiceProcess.lambda$new$0(DefaultJobMasterServiceProcess.java:97)
~[flink-dist_2.12-1.13.1.jar:1.13.1]
at
java.util.concurrent.CompletableFuture.uniWhenComplete(CompletableFuture.java:859)
~[?:?]
at
java.util.concurrent.CompletableFuture$UniWhenComplete.tryFire(CompletableFuture.java:837)
~[?:?]
at
java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:506)
~[?:?]
at
java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java:1705)
~[?:?]
... 6 more
Caused by: java.util.concurrent.CompletionException:
java.lang.NullPointerException
at
java.util.concurrent.CompletableFuture.encodeThrowable(CompletableFuture.java:314)
~[?:?]
at
java.util.concurrent.CompletableFuture.completeThrowable(CompletableFuture.java:319)
~[?:?]
at
java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java:1702)
~[?:?]
... 6 more
Caused by: java.lang.NullPointerException
at
org.apache.flink.runtime.checkpoint.StateAssignmentOperation.reAssignSubKeyedStates(StateAssignmentOperation.java:300)
~[flink-dist_2.12-1.13.1.jar:1.13.1]
at
org.apache.flink.runtime.checkpoint.StateAssignmentOperation.lambda$reDistributeKeyedStates$0(StateAssignmentOperation.java:260)
~[flink-dist_2.12-1.13.1.jar:1.13.1]
at java.util.HashMap.forEach(HashMap.java:1336) ~[?:?]
at
org.apache.flink.runtime.checkpoint.StateAssignmentOperation.reDistributeKeyedStates(StateAssignmentOperation.java:252)
~[flink-dist_2.12-1.13.1.jar:1.13.1]
at
org.apache.flink.runtime.checkpoint.StateAssignmentOperation.assignAttemptState(StateAssignmentOperation.java:196)
~[flink-dist_2.12-1.13.1.jar:1.13.1]
at
org.apache.flink.runtime.checkpoint.StateAssignmentOperation.assignStates(StateAssignmentOperation.java:139)
~[flink-dist_2.12-1.13.1.jar:1.13.1]
at
org.apache.flink.runtime.checkpoint.CheckpointCoordinator.restoreLatestCheckpointedStateInternal(CheckpointCoordinator.java:1562)
~[flink-dist_2.12-1.13.1.jar:1.13.1]
at
org.apache.flink.runtime.checkpoint.CheckpointCoordinator.restoreSavepoint(CheckpointCoordinator.java:1642)
~[flink-dist_2.12-1.13.1.jar:1.13.1]
at
org.apache.flink.runtime.scheduler.DefaultExecutionGraphFactory.tryRestoreExecutionGraphFromSavepoint(DefaultExecutionGraphFactory.java:163)
~[flink-dist_2.12-1.13.1.jar:1.13.1]
at
org.apache.flink.runtime.scheduler.DefaultExecutionGraphFactory.createAndRestoreExecutionGraph(DefaultExecutionGraphFactory.java:138)
~[flink-dist_2.12-1.13.1.jar:1.13.1]
at
org.apache.flink.runtime.scheduler.SchedulerBase.createAndRestoreExecutionGraph(SchedulerBase.java:342)
~[flink-dist_2.12-1.13.1.jar:1.13.1]
at
org.apache.flink.runtime.scheduler.SchedulerBase.<init>(SchedulerBase.java:190)
~[flink-dist_2.12-1.13.1.jar:1.13.1]
at
org.apache.flink.runtime.scheduler.DefaultScheduler.<init>(DefaultScheduler.java:120)
~[flink-dist_2.12-1.13.1.jar:1.13.1]
at
org.apache.flink.runtime.scheduler.DefaultSchedulerFactory.createInstance(DefaultSchedulerFactory.java:132)
~[flink-dist_2.12-1.13.1.jar:1.13.1]
at
org.apache.flink.runtime.jobmaster.DefaultSlotPoolServiceSchedulerFactory.createScheduler(DefaultSlotPoolServiceSchedulerFactory.java:110)
~[flink-dist_2.12-1.13.1.jar:1.13.1]
at
org.apache.flink.runtime.jobmaster.JobMaster.createScheduler(JobMaster.java:340)
~[flink-dist_2.12-1.13.1.jar:1.13.1]
at
org.apache.flink.runtime.jobmaster.JobMaster.<init>(JobMaster.java:317)
~[flink-dist_2.12-1.13.1.jar:1.13.1]
at
org.apache.flink.runtime.jobmaster.factories.DefaultJobMasterServiceFactory.internalCreateJobMasterService(DefaultJobMasterServiceFactory.java:107)
~[flink-dist_2.12-1.13.1.jar:1.13.1]
at
org.apache.flink.runtime.jobmaster.factories.DefaultJobMasterServiceFactory.lambda$createJobMasterService$0(DefaultJobMasterServiceFactory.java:95)
~[flink-dist_2.12-1.13.1.jar:1.13.1]
at
org.apache.flink.util.function.FunctionUtils.lambda$uncheckedSupplier$4(FunctionUtils.java:112)
~[flink-dist_2.12-1.13.1.jar:1.13.1]
... 7 more
2021-06-09 13:08:59,852 ERROR
org.apache.flink.runtime.webmonitor.handlers.JarRunHandler [] - Exception
occurred in REST handler: Could not execute application.
{code}
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