/** The key of the message: Search */
    public static final String LABELS_SEARCH = "{labels.search}";

    /** The key of the message: Showing similar results. */
    public static final String LABELS_similar_doc_result_status = "{labels.similar_doc_result_status}";

* Add support for kube-up.sh to deploy Calico network policy to GCI masters ([#29037](https://github.com/kubernetes/kubernetes/pull/29037), [@matthewdupre](https://github.com/matthewdupre))
* Added 'kubectl top' command showing the resource usage metrics. ([#28844](https://github.com/kubernetes/kubernetes/pull/28844), [@mksalawa](https://github.com/mksalawa))

- Kubectl rollout history sts/sts-name --revision=some-revision will start showing the detailed view of  the sts on that specified revision ([#86506](https://github.com/kubernetes/kubernetes/pull/86506), [@dineshba](https://github.com/dineshba)) [SIG CLI]

- Kubeadm: when a sub command is needed but not provided for a kubeadm command, print a help screen instead of showing a short message. ([#111277](https://github.com/kubernetes/kubernetes/pull/111277), [@chymy](https://github.com/chymy))

- Improved scheduler performance when no scoring plugins were defined.
   ([#122058](https://github.com/kubernetes/kubernetes/pull/122058), [@aleksandra-malinowska](https://github.com/aleksandra-malinowska))
- Improved scheduler performance when no scoring plugins were defined.

- Kubeadm: perform pre-flight validation on host/node name upon `kubeadm init` and `kubeadm join`, showing warnings on non-compliant names ([#99194](https://github.com/kubernetes/kubernetes/pull/99194), [@pacoxu](https://github.com/pacoxu))

    - `scheduler_async_api_call_duration_seconds`: histogram of API call execution duration by call type and result
    - `scheduler_pending_async_api_calls`: gauge showing current number of pending API calls in the queue. ([#133120](https://github.com/kubernetes/kubernetes/pull/133120), [@utam0k](https://github.com/utam0k)) [SIG Release and Scheduling]

- Kube-apiserver backed by etcd3 exports metric showing the database file size. ([#89151](https://github.com/kubernetes/kubernetes/pull/89151), [@jingyih](https://github.com/jingyih)) [SIG API Machinery]

- Fixed a bug where `kubectl describe` incorrectly displayed NetworkPolicy port ranges
  (showing only the starting port). ([#123316](https://github.com/kubernetes/kubernetes/pull/123316), [@jcaamano](https://github.com/jcaamano))
- Fixed a bug where hard evictions due to resource pressure allowed pods

* APIserver backed by etcdv3 exports metric showing number of resources per kind ([#59757](https://github.com/kubernetes/kubernetes/pull/59757), [@gmarek](https://github.com/gmarek))