Removal of namespace hangs on terminating

[fdehay]

When removing a namespace with CassKop and a running cluster in it without prior warning, K8S cannot complete the task. The namespace hangs on Terminating
This happened on one of our internal clusters

[fdehay]

The issue may come from the finalizer of the CRD (thanks @allamand)

[scott-kausler]

As @fdehay indicates, this does seem to be a finalizer when deleting the CRD at the same time as the namespace. This issue best describes it kubernetes/kubernetes#60538. In my case, I found it helps to wait before deleting the namespace:
kubectl -n <namespace> wait --for=delete --timeout=600s <resource-name>

[ajoskowski]

Any updates here?

[SuhailRahman]

I usually follow the steps in this link to forcefully delete the namespace when it is stuck at terminating state. Hope this is useful.