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https://issues.apache.org/jira/browse/FLINK-32340?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Gyula Fora closed FLINK-32340.
------------------------------
Resolution: Duplicate
This is fixed already in FLINK-32111
> NPE in K8s operator which brakes current and subsequent deployments
> -------------------------------------------------------------------
>
> Key: FLINK-32340
> URL: https://issues.apache.org/jira/browse/FLINK-32340
> Project: Flink
> Issue Type: Bug
> Components: Kubernetes Operator
> Affects Versions: kubernetes-operator-1.5.0
> Reporter: Sergii Nazarov
> Priority: Critical
>
> Prerequisites:
> * Deployment via Apache Flink Kubernetes operator with version 1.5.0
> * Deployment using FlinkDeployment spec
> * Upgrade mode - savepoint
> * Configuration property
> "kubernetes.operator.job.upgrade.last-state-fallback.enabled" is true
> * Flink version 1.15.4
>
> Steps to reproduce:
> # Deploy an app
> # You can wait till the app creates a checkpoint (it doesn't change anything
> even if "kubernetes.operator.job.upgrade.last-state-fallback.enabled" is true)
> # Deploy a new version of the app with an error that causes throwing an
> exception from the main method of the app
> Exception which causes operator NPE
> {code:none}
> 36mo.a.f.k.o.o.JobStatusObserver [m [1;31m[ERROR][flink-apps/myApp] Job
> 0d78a62fe581b047510e28f26393a7ce failed with error:
> org.apache.flink.client.program.ProgramInvocationException: The main method
> caused an error: Consumer does not exist
> at
> org.apache.flink.client.program.PackagedProgram.callMainMethod(PackagedProgram.java:372)
> at
> org.apache.flink.client.program.PackagedProgram.invokeInteractiveModeForExecution(PackagedProgram.java:222)
> at
> org.apache.flink.client.ClientUtils.executeProgram(ClientUtils.java:114)
> at
> org.apache.flink.client.deployment.application.ApplicationDispatcherBootstrap.runApplicationEntryPoint(ApplicationDispatcherBootstrap.java:291)
> at
> org.apache.flink.client.deployment.application.ApplicationDispatcherBootstrap.lambda$runApplicationAsync$2(ApplicationDispatcherBootstrap.java:244)
> at
> java.base/java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
> at java.base/java.util.concurrent.FutureTask.run(Unknown Source)
> at
> org.apache.flink.runtime.concurrent.akka.ActorSystemScheduledExecutorAdapter$ScheduledFutureTask.run(ActorSystemScheduledExecutorAdapter.java:171)
> at
> org.apache.flink.runtime.concurrent.akka.ClassLoadingUtils.runWithContextClassLoader(ClassLoadingUtils.java:68)
> at
> org.apache.flink.runtime.concurrent.akka.ClassLoadingUtils.lambda$withContextClassLoader$0(ClassLoadingUtils.java:41)
> at akka.dispatch.TaskInvocation.run(AbstractDispatcher.scala:49)
> at
> akka.dispatch.ForkJoinExecutorConfigurator$AkkaForkJoinTask.exec(ForkJoinExecutorConfigurator.scala:48)
> at java.base/java.util.concurrent.ForkJoinTask.doExec(Unknown Source)
> at
> java.base/java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec(Unknown
> Source)
> at java.base/java.util.concurrent.ForkJoinPool.scan(Unknown Source)
> at java.base/java.util.concurrent.ForkJoinPool.runWorker(Unknown Source)
> at java.base/java.util.concurrent.ForkJoinWorkerThread.run(Unknown
> Source)
> {code}
> NPE in K8s operator
> {code:none}
> [36mo.a.f.k.o.l.AuditUtils [m [32m[INFO ][flink-apps/myApp] >>> Event
> | Info | JOBSTATUSCHANGED | Job status changed from RECONCILING to FAILED
> [36mo.a.f.k.o.o.SavepointObserver [m [1;31m[ERROR][flink-apps/myApp] Could
> not observe latest savepoint information.
> java.lang.NullPointerException
> at
> org.apache.flink.kubernetes.operator.service.CheckpointHistoryWrapper.getInProgressCheckpoint(CheckpointHistoryWrapper.java:60)
> at
> org.apache.flink.kubernetes.operator.service.AbstractFlinkService.getCheckpointInfo(AbstractFlinkService.java:564)
> at
> org.apache.flink.kubernetes.operator.service.AbstractFlinkService.getLastCheckpoint(AbstractFlinkService.java:520)
> at
> org.apache.flink.kubernetes.operator.observer.SavepointObserver.observeLatestSavepoint(SavepointObserver.java:209)
> at
> org.apache.flink.kubernetes.operator.observer.SavepointObserver.observeSavepointStatus(SavepointObserver.java:73)
> at
> org.apache.flink.kubernetes.operator.observer.deployment.ApplicationObserver.observeFlinkCluster(ApplicationObserver.java:61)
> at
> org.apache.flink.kubernetes.operator.observer.deployment.AbstractFlinkDeploymentObserver.observeInternal(AbstractFlinkDeploymentObserver.java:73)
> at
> org.apache.flink.kubernetes.operator.observer.AbstractFlinkResourceObserver.observe(AbstractFlinkResourceObserver.java:53)
> at
> org.apache.flink.kubernetes.operator.controller.FlinkDeploymentController.reconcile(FlinkDeploymentController.java:134)
> at
> org.apache.flink.kubernetes.operator.controller.FlinkDeploymentController.reconcile(FlinkDeploymentController.java:57)
> at
> io.javaoperatorsdk.operator.processing.Controller$1.execute(Controller.java:138)
> at
> io.javaoperatorsdk.operator.processing.Controller$1.execute(Controller.java:96)
> at
> org.apache.flink.kubernetes.operator.metrics.OperatorJosdkMetrics.timeControllerExecution(OperatorJosdkMetrics.java:80)
> at
> io.javaoperatorsdk.operator.processing.Controller.reconcile(Controller.java:95)
> at
> io.javaoperatorsdk.operator.processing.event.ReconciliationDispatcher.reconcileExecution(ReconciliationDispatcher.java:139)
> at
> io.javaoperatorsdk.operator.processing.event.ReconciliationDispatcher.handleReconcile(ReconciliationDispatcher.java:119)
> at
> io.javaoperatorsdk.operator.processing.event.ReconciliationDispatcher.handleDispatch(ReconciliationDispatcher.java:89)
> at
> io.javaoperatorsdk.operator.processing.event.ReconciliationDispatcher.handleExecution(ReconciliationDispatcher.java:62)
> at
> io.javaoperatorsdk.operator.processing.event.EventProcessor$ReconcilerExecutor.run(EventProcessor.java:414)
> at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown
> Source)
> at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown
> Source)
> at java.base/java.lang.Thread.run(Unknown Source)
> {code}
> What it brakes
> 1. The operator loses the latest savepoint/checkpoint information so you
> cannot deploy a new version of the app with a fix. To workaround it you
> should entirely delete the current deployment, manually find the latest
> checkpoint by job ID in S3 or other checkpoint storages and create a new
> deployment with initialSavepointPath which you manually have found.
> 2. The operator stuck deleting the app when the app is deleted by the command
> {noformat}
> kubectl delete flinkdeployment <deployment name>{noformat}
> To workaround it you need to find and delete the K8s Deployment resource
> {noformat}
> kubectl delete deployment <deployment name>{noformat}
> 3. When the feature "kubernetes.operator.deployment.rollback.enabled" is
> enabled operator doesn't rollback app to a previously deployed version
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