weird

yiqigao@yiqigao:~/go/src/sigs.k8s.io/multi-tenancy/incubator/hnc$ k get ns
NAME              STATUS   AGE
default           Active   72d
hnc-system        Active   31s
kube-node-lease   Active   72d
kube-public       Active   72d
kube-system       Active   72d
yiqigao@yiqigao:~/go/src/sigs.k8s.io/multi-tenancy/incubator/hnc$ k get crd
NAME                                        CREATED AT
backendconfigs.cloud.google.com             2020-05-25T13:35:11Z
hierarchyconfigurations.hnc.x-k8s.io        2020-08-06T01:52:51Z
hncconfigurations.hnc.x-k8s.io              2020-08-06T01:56:17Z
managedcertificates.networking.gke.io       2020-05-25T13:35:04Z
scalingpolicies.scalingpolicy.kope.io       2020-05-25T13:35:02Z
storagestates.migration.k8s.io              2020-05-25T13:35:05Z
storageversionmigrations.migration.k8s.io   2020-05-25T13:35:05Z
subnamespaceanchors.hnc.x-k8s.io            2020-08-06T01:52:51Z
updateinfos.nodemanagement.gke.io           2020-05-25T13:35:06Z
yiqigao@yiqigao:~/go/src/sigs.k8s.io/multi-tenancy/incubator/hnc$ k get hierarchyconfigurations.hnc.x-k8s.io --all-namespaces 
NAMESPACE               NAME        AGE
e2e-conversion-test-a   hierarchy   3m59s
yiqigao@yiqigao:~/go/src/sigs.k8s.io/multi-tenancy/incubator/hnc$ k get subnamespaceanchors.hnc.x-k8s.io --all-namespace
Error: unknown flag: --all-namespace
See 'kubectl get --help' for usage.
yiqigao@yiqigao:~/go/src/sigs.k8s.io/multi-tenancy/incubator/hnc$ k get subnamespaceanchors.hnc.x-k8s.io --all-namespaces
NAMESPACE               NAME                    AGE
e2e-conversion-test-a   e2e-conversion-test-b   4m14s
yiqigao@yiqigao:~/go/src/sigs.k8s.io/multi-tenancy/incubator/hnc$ k get hierarchyconfigurations.hnc.x-k8s.io -o yaml
apiVersion: v1
items: []
kind: List
metadata:
  resourceVersion: ""
  selfLink: ""
yiqigao@yiqigao:~/go/src/sigs.k8s.io/multi-tenancy/incubator/hnc$ k edit hierarchyconfigurations.hnc.x-k8s.io hierarchy -n e2e-converstion-test-a
Error from server (NotFound): namespaces "e2e-converstion-test-a" not found
yiqigao@yiqigao:~/go/src/sigs.k8s.io/multi-tenancy/incubator/hnc$ k get subnamespaceanchors.hnc.x-k8s.io --all-namespaces 
NAMESPACE               NAME                    AGE
e2e-conversion-test-a   e2e-conversion-test-b   5m18s
yiqigao@yiqigao:~/go/src/sigs.k8s.io/multi-tenancy/incubator/hnc$ k get hierarchyconfigurations.hnc.x-k8s.io --all-namespaces 
NAMESPACE               NAME        AGE
e2e-conversion-test-a   hierarchy   5m52s
yiqigao@yiqigao:~/go/src/sigs.k8s.io/multi-tenancy/incubator/hnc$ k get hierarchyconfigurations.hnc.x-k8s.io --all-namespaces 
NAMESPACE               NAME        AGE
e2e-conversion-test-a   hierarchy   6m34s
yiqigao@yiqigao:~/go/src/sigs.k8s.io/multi-tenancy/incubator/hnc$ k get hierarchyconfigurations.hnc.x-k8s.io --all-namespaces -o yaml
apiVersion: v1
items:
- apiVersion: hnc.x-k8s.io/v1alpha2
  kind: HierarchyConfiguration
  metadata:
    creationTimestamp: "2020-08-06T01:53:14Z"
    deletionGracePeriodSeconds: 0
    deletionTimestamp: "2020-08-06T01:55:03Z"
    finalizers:
    - hnc.x-k8s.io/hasSubnamespace
    generation: 8
    name: hierarchy
    namespace: e2e-conversion-test-a
    resourceVersion: "27499262"
    selfLink: /apis/hnc.x-k8s.io/v1alpha2/namespaces/e2e-conversion-test-a/hierarchyconfigurations/hierarchy
    uid: e0f0353a-7eb0-465f-967d-cb10e0372226
  spec:
    allowCascadingDelete: true
  status: {}
kind: List
metadata:
  resourceVersion: ""
  selfLink: ""