Yang Wang created FLINK-27359:
---------------------------------
Summary: Kubernetes operator throws NPE when testing with Flink
1.15
Key: FLINK-27359
URL: https://issues.apache.org/jira/browse/FLINK-27359
Project: Flink
Issue Type: Bug
Components: Kubernetes Operator
Reporter: Yang Wang
Fix For: kubernetes-operator-1.0.0
{code:java}
2022-04-22 10:19:18,307 o.a.f.k.o.c.FlinkDeploymentController [WARN
][default/flink-example-statemachine] Attempt count: 5, last attempt: true
2022-04-22 10:19:18,329 i.j.o.p.e.ReconciliationDispatcher
[ERROR][default/flink-example-statemachine] Error during event processing
ExecutionScope{ resource id:
CustomResourceID{name='flink-example-statemachine', namespace='default'},
version: 4979543} failed.
org.apache.flink.kubernetes.operator.exception.ReconciliationException:
java.lang.NullPointerException
at
org.apache.flink.kubernetes.operator.controller.FlinkDeploymentController.reconcile(FlinkDeploymentController.java:110)
at
org.apache.flink.kubernetes.operator.controller.FlinkDeploymentController.reconcile(FlinkDeploymentController.java:53)
at
io.javaoperatorsdk.operator.processing.Controller$2.execute(Controller.java:101)
at
io.javaoperatorsdk.operator.processing.Controller$2.execute(Controller.java:76)
at
io.javaoperatorsdk.operator.api.monitoring.Metrics.timeControllerExecution(Metrics.java:34)
at
io.javaoperatorsdk.operator.processing.Controller.reconcile(Controller.java:75)
at
io.javaoperatorsdk.operator.processing.event.ReconciliationDispatcher.reconcileExecution(ReconciliationDispatcher.java:143)
at
io.javaoperatorsdk.operator.processing.event.ReconciliationDispatcher.handleReconcile(ReconciliationDispatcher.java:109)
at
io.javaoperatorsdk.operator.processing.event.ReconciliationDispatcher.handleDispatch(ReconciliationDispatcher.java:74)
at
io.javaoperatorsdk.operator.processing.event.ReconciliationDispatcher.handleExecution(ReconciliationDispatcher.java:50)
at
io.javaoperatorsdk.operator.processing.event.EventProcessor$ControllerExecution.run(EventProcessor.java:349)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown
Source)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown
Source)
at java.base/java.lang.Thread.run(Unknown Source)
Caused by: java.lang.NullPointerException
at
org.apache.flink.kubernetes.operator.utils.FlinkUtils.lambda$deleteJobGraphInKubernetesHA$0(FlinkUtils.java:253)
at java.base/java.util.ArrayList.forEach(Unknown Source)
at
org.apache.flink.kubernetes.operator.utils.FlinkUtils.deleteJobGraphInKubernetesHA(FlinkUtils.java:248)
at
org.apache.flink.kubernetes.operator.service.FlinkService.submitApplicationCluster(FlinkService.java:130)
at
org.apache.flink.kubernetes.operator.reconciler.deployment.ApplicationReconciler.deployFlinkJob(ApplicationReconciler.java:205)
at
org.apache.flink.kubernetes.operator.reconciler.deployment.ApplicationReconciler.restoreFromLastSavepoint(ApplicationReconciler.java:218)
at
org.apache.flink.kubernetes.operator.reconciler.deployment.ApplicationReconciler.reconcile(ApplicationReconciler.java:117)
at
org.apache.flink.kubernetes.operator.reconciler.deployment.ApplicationReconciler.reconcile(ApplicationReconciler.java:56)
at
org.apache.flink.kubernetes.operator.controller.FlinkDeploymentController.reconcile(FlinkDeploymentController.java:106)
... 13 more {code}
The root cause is that the Kubernetes HA implementation has changed from 1.15.
When the job is cancelled, the data of leader ConfigMap will be cleared.
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