tidb-scheduler can't scheduling pd

[weekface]

When a pvc both have tidb.pingcap.com/pod-scheduling and tidb.pingcap.com/pvc-defer-deleting, later pods cannot be scheduled：

apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  annotations:
    pv.kubernetes.io/bind-completed: "yes"
    tidb.pingcap.com/pod-name: stability-cluster1-pd-4
    tidb.pingcap.com/pod-scheduling: 2019-04-30T10:39:17Z
    tidb.pingcap.com/pvc-defer-deleting: 2019-04-30T10:41:56Z

E0430 11:32:36.422566       1 mux.go:107] unable to filter nodes: pods "stability-cluster1-pd-4" not found
I0430 11:32:36.427365       1 scheduler.go:75] scheduling pod: stability-cluster2/stability-cluster2-pd-2
I0430 11:32:36.427410       1 scheduler.go:78] entering predicate: HighAvailability, nodes: [172.16.4.156]
E0430 11:32:36.822106       1 mux.go:107] unable to filter nodes: pods "stability-cluster2-pd-4" not found
I0430 11:32:36.826812       1 scheduler.go:75] scheduling pod: stability-cluster1/stability-cluster1-pd-2
I0430 11:32:36.826833       1 scheduler.go:78] entering predicate: HighAvailability, nodes: [172.16.4.160]
E0430 11:32:37.221874       1 mux.go:107] unable to filter nodes: pods "stability-cluster1-pd-4" not found
I0430 11:32:37.226280       1 scheduler.go:75] scheduling pod: stability-cluster2/stability-cluster2-pd-2
I0430 11:32:37.226295       1 scheduler.go:78] entering predicate: HighAvailability, nodes: [172.16.4.156]
E0430 11:32:37.622519       1 mux.go:107] unable to filter nodes: pods "stability-cluster2-pd-4" not found
I0430 11:32:37.627086       1 scheduler.go:75] scheduling pod: stability-cluster1/stability-cluster1-pd-2
I0430 11:32:37.627126       1 scheduler.go:78] entering predicate: HighAvailability, nodes: [172.16.4.160]
E0430 11:32:38.021707       1 mux.go:107] unable to filter nodes: pods "stability-cluster1-pd-4" not found
I0430 11:32:38.026198       1 scheduler.go:75] scheduling pod: stability-cluster2/stability-cluster2-pd-2
I0430 11:32:38.026219       1 scheduler.go:78] entering predicate: HighAvailability, nodes: [172.16.4.156]
E0430 11:32:38.421899       1 mux.go:107] unable to filter nodes: pods "stability-cluster2-pd-4" not found
I0430 11:32:38.427214       1 scheduler.go:75] scheduling pod: stability-cluster1/stability-cluster1-pd-2
I0430 11:32:38.427249       1 scheduler.go:78] entering predicate: HighAvailability, nodes: [172.16.4.160]
E0430 11:32:38.821963       1 mux.go:107] unable to filter nodes: pods "stability-cluster1-pd-4" not found