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https://issues.apache.org/jira/browse/FLINK-34960?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17833060#comment-17833060
]
Robert Metzger commented on FLINK-34960:
----------------------------------------
Is it possible that your `FlinkSessionJobSpec` does not contain any
`flinkConfiguration`? Can you try adding some dummy Flink config (e.g. foo:
bar), just to validate if this resolves the bug?
> NullPointerException while applying parallelism overrides for session jobs
> --------------------------------------------------------------------------
>
> Key: FLINK-34960
> URL: https://issues.apache.org/jira/browse/FLINK-34960
> Project: Flink
> Issue Type: Bug
> Components: Kubernetes Operator
> Affects Versions: 1.8.0
> Reporter: Kunal Rohitas
> Priority: Major
>
> While using the autoscaler for session jobs, the operator throws a
> NullPointerException while trying to apply parallelism overrides, though it's
> able to generate parallelism suggestion report for scaling. The versions used
> here are flink-1.18.1 and flink-kubernetes-operator-1.8.0.
> {code:java}
> 2024-03-26 08:41:21,617 o.a.f.a.JobAutoScalerImpl
> [ERROR][default/clientsession-job] Error applying overrides.
> java.lang.NullPointerException at
> org.apache.flink.kubernetes.operator.autoscaler.KubernetesScalingRealizer.realizeParallelismOverrides(KubernetesScalingRealizer.java:52)
> at
> org.apache.flink.kubernetes.operator.autoscaler.KubernetesScalingRealizer.realizeParallelismOverrides(KubernetesScalingRealizer.java:40)
> at
> org.apache.flink.autoscaler.JobAutoScalerImpl.applyParallelismOverrides(JobAutoScalerImpl.java:161)
> at
> org.apache.flink.autoscaler.JobAutoScalerImpl.scale(JobAutoScalerImpl.java:111)
> at
> org.apache.flink.kubernetes.operator.reconciler.deployment.AbstractFlinkResourceReconciler.applyAutoscaler(AbstractFlinkResourceReconciler.java:192)
> at
> org.apache.flink.kubernetes.operator.reconciler.deployment.AbstractFlinkResourceReconciler.reconcile(AbstractFlinkResourceReconciler.java:139)
> at
> org.apache.flink.kubernetes.operator.controller.FlinkSessionJobController.reconcile(FlinkSessionJobController.java:116)
> at
> org.apache.flink.kubernetes.operator.controller.FlinkSessionJobController.reconcile(FlinkSessionJobController.java:53)
> at
> io.javaoperatorsdk.operator.processing.Controller$1.execute(Controller.java:152)
> at
> io.javaoperatorsdk.operator.processing.Controller$1.execute(Controller.java:110)
> at
> org.apache.flink.kubernetes.operator.metrics.OperatorJosdkMetrics.timeControllerExecution(OperatorJosdkMetrics.java:80)
> at
> io.javaoperatorsdk.operator.processing.Controller.reconcile(Controller.java:109)
> at
> io.javaoperatorsdk.operator.processing.event.ReconciliationDispatcher.reconcileExecution(ReconciliationDispatcher.java:140)
> at
> io.javaoperatorsdk.operator.processing.event.ReconciliationDispatcher.handleReconcile(ReconciliationDispatcher.java:121)
> at
> io.javaoperatorsdk.operator.processing.event.ReconciliationDispatcher.handleDispatch(ReconciliationDispatcher.java:91)
> at
> io.javaoperatorsdk.operator.processing.event.ReconciliationDispatcher.handleExecution(ReconciliationDispatcher.java:64)
> at
> io.javaoperatorsdk.operator.processing.event.EventProcessor$ReconcilerExecutor.run(EventProcessor.java:417)
> 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}
>
> {code:java}
> 2024-03-26 08:41:21,617 o.a.f.a.JobAutoScalerImpl
> [ERROR][default/clientsession-job] Error while scaling job
> java.lang.NullPointerException at
> org.apache.flink.kubernetes.operator.autoscaler.KubernetesScalingRealizer.realizeParallelismOverrides(KubernetesScalingRealizer.java:52)
> at
> org.apache.flink.kubernetes.operator.autoscaler.KubernetesScalingRealizer.realizeParallelismOverrides(KubernetesScalingRealizer.java:40)
> at
> org.apache.flink.autoscaler.JobAutoScalerImpl.applyParallelismOverrides(JobAutoScalerImpl.java:161)
> at
> org.apache.flink.autoscaler.JobAutoScalerImpl.scale(JobAutoScalerImpl.java:111)
> at
> org.apache.flink.kubernetes.operator.reconciler.deployment.AbstractFlinkResourceReconciler.applyAutoscaler(AbstractFlinkResourceReconciler.java:192)
> at
> org.apache.flink.kubernetes.operator.reconciler.deployment.AbstractFlinkResourceReconciler.reconcile(AbstractFlinkResourceReconciler.java:139)
> at
> org.apache.flink.kubernetes.operator.controller.FlinkSessionJobController.reconcile(FlinkSessionJobController.java:116)
> at
> org.apache.flink.kubernetes.operator.controller.FlinkSessionJobController.reconcile(FlinkSessionJobController.java:53)
> at
> io.javaoperatorsdk.operator.processing.Controller$1.execute(Controller.java:152)
> at
> io.javaoperatorsdk.operator.processing.Controller$1.execute(Controller.java:110)
> at
> org.apache.flink.kubernetes.operator.metrics.OperatorJosdkMetrics.timeControllerExecution(OperatorJosdkMetrics.java:80)
> at
> io.javaoperatorsdk.operator.processing.Controller.reconcile(Controller.java:109)
> at
> io.javaoperatorsdk.operator.processing.event.ReconciliationDispatcher.reconcileExecution(ReconciliationDispatcher.java:140)
> at
> io.javaoperatorsdk.operator.processing.event.ReconciliationDispatcher.handleReconcile(ReconciliationDispatcher.java:121)
> at
> io.javaoperatorsdk.operator.processing.event.ReconciliationDispatcher.handleDispatch(ReconciliationDispatcher.java:91)
> at
> io.javaoperatorsdk.operator.processing.event.ReconciliationDispatcher.handleExecution(ReconciliationDispatcher.java:64)
> at
> io.javaoperatorsdk.operator.processing.event.EventProcessor$ReconcilerExecutor.run(EventProcessor.java:417)
> 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}
>
> The document suggests to use latest custom build of 1.18 or 1.19 that
> contains https://issues.apache.org/jira/browse/FLINK-33534 but a
> NullPointerException should never happen ?
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