[jira] [Closed] (FLINK-34960) NullPointerException while applying parallelism overrides for session jobs

["Gyula Fora (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/FLINK-34960?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Gyula Fora closed FLINK-34960.
------------------------------
    Resolution: Won't Fix

> 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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