operator开启bk任务，pod都Completed，但是bk资源信息缺失。

[XiaoGe2030 (刘校)]

operator version :v1.1.6
tidb version : v4.0.8

# kubectl get pod -n tidb-incr-bk-014
NAME                                                             READY   STATUS      RESTARTS   AGE
backup-tidb-incr-bk-014-incremental-backup-1608105498727-898vn   0/1     Completed   0          2m37s
tidb-incr-bk-014-discovery-65f7b5b86b-r7p75                      1/1     Running     0          5m57s
tidb-incr-bk-014-monitor-6fdf666bcd-ht8tq                        3/3     Running     0          6m
tidb-incr-bk-014-pd-0                                            1/1     Running     0          5m56s
tidb-incr-bk-014-tidb-0                                          2/2     Running     0          4m11s
tidb-incr-bk-014-tidb-initializer-ls59n                          0/1     Completed   0          6m6s
tidb-incr-bk-014-tikv-0                                          1/1     Running     0          5m7s
tidb-incr-bk-014-tikv-1                                          1/1     Running     0          5m7s
tidb-incr-bk-014-tikv-2                                          1/1     Running     0          5m7s

bk信息：

# kubectl get bk -n tidb-incr-bk-014
NAME                                                BACKUPPATH   BACKUPSIZE   COMMITTS   AGE
tidb-incr-bk-014-incremental-backup-1608105498727                                        5m35s

看这里也获取到了CommitTs，且提示Backup 更新成功，但查询k8s里的bk就是没有信息。
这个显现是偶现的。

麻烦看下，谢谢！

[XiaoGe2030 (刘校)]

还遇到一个奇怪的现象，开始bk有相关信息，后面又消失了:joy:

[zhenjiaogao]

见下面的 issue ：
https://github.com/pingcap/tidb-operator/pull/3667