Kubernetes CRD Deletion Hang

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It is possible that the deletion of k8s CRD hang for indefinite time due to dependency issue.

If it happens, manually edit the CRD and empty the finalizers value block:

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finalizers:
- xxx.finalizer.networking.gke.io

For programmatic way, what I did is running delete kubectl command in background and followed by a kubectl patch command to remove the finalizer block, for example the patch command:

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kubectl path <crd type name> <crd resource name> \
{"metadata":{"finalizers":[]}} \
--type merge

The background delete command can be forcely killed at end or after some period of time if it does not fulfill.