Finalizer for kubernetes resources created by a workflow

[boniek83]

Summary

I want to make sure that kubernetes resource created by a workflow is deleted when workflow fails or is deleted. Currently using onExit doesn't guarantee that. I can run kubectl delete workflow - it will skip onExit, I can run argo terminate (or press terminate in UI) - it will skip onExit. What happens if argo itself stops working?

Probably related to https://github.com/argoproj/argo-workflows/issues/7860

Use Cases

I want to make sure that SparkApplications (that use a lot of resources) started by a Workflow die with a Workflow.

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[terrytangyuan]

Use resource template and specify ownerReference.

[boniek83]

@terrytangyuan This doesn't work with SparkApplications (https://github.com/GoogleCloudPlatform/spark-on-k8s-operator). When setOwnerReference is set on resource of SparkApplication type SparkApplication stops working correctly.