BinaryOperator<V> mergeFunction) {
    return CollectCollectors.toImmutableSortedMap(
        comparator, keyFunction, valueFunction, mergeFunction);
  }

  /*
   * TODO(kevinb): Confirm that ImmutableSortedMap is faster to construct and
   * uses less memory than TreeMap; then say so in the class Javadoc.
   */
  private static final Comparator<?> NATURAL_ORDER = Ordering.natural();

    calls and for idle connections in the connection pool. (Pings do not impact
    when pooled connections are evicted).

    If you have a configured ping interval, you should confirm that it is long
    enough for a roundtrip from client to server. If your ping interval is too
    short, slow connections may be misinterpreted as failed connections. A ping

		if nErr.Err != nil {
			peersLogOnceIf(logger.SetReqInfo(ctx, reqInfo), nErr.Err, nErr.Host.String())
		}
	}
}

// LoadTransitionTierConfig notifies remote peers to load their remote tier
// configs from config store.
func (sys *NotificationSys) LoadTransitionTierConfig(ctx context.Context) {
	ng := WithNPeers(len(sys.peerClients))
	for idx, client := range sys.peerClients {
		if client == nil {
			continue
		}

* kube-apiserver: The `AdmissionConfiguration` type accepted by `--admission-control-config-file` has been promoted to `apiserver.config.k8s.io/v1` with no schema changes. ([#85098](https...

     *
     * <p>This method performs the following validations:
     * <ul>
     * <li>Checks if username and password are not blank</li>
     * <li>Verifies LDAP admin is enabled for the user</li>
     * <li>Confirms the user exists in LDAP directory</li>
     * </ul>
     *
     * @param username the username of the user (must not be null or blank)
     * @param password the new password (must not be null or blank)

*   The API group/version for the kube-proxy configuration has changed from `componentconfig/v1alpha1` to `kubeproxy.config.k8s.io/v1alpha1`. If you are using a config file for kube-proxy instead of the command line flags, you must change its apiVersion to `kubeproxy.config.k8s.io/v1alpha1`. ([#53645](https://github.com/kubernetes/kubernetes/pull/53645), [@xiangpengzhao](https://github.com/xiangpengzhao))

		defPool = pinfo
		if !isErrObjectNotFound(pinfo.Err) && !isErrVersionNotFound(pinfo.Err) {
			return pinfo, noReadQuorumPools, pinfo.Err
		}

		// No object exists or its a delete marker,
		// check objInfo to confirm.
		if pinfo.ObjInfo.DeleteMarker && pinfo.ObjInfo.Name != "" {
			return pinfo, noReadQuorumPools, nil
		}
	}
	if opts.ReplicationRequest && opts.DeleteMarker && defPool.Index >= 0 {

- '`kube-apiserver`: adds `--authentication-config` flag for reading `AuthenticationConfiguration`
  files. `--authentication-config` flag is mutually exclusive with the existing `--oidc-*`
  flags.' ([#119142](https://github.com/kubernetes/kubernetes/pull/119142), [@aramase](https://github.com/aramase))
- '`kube-scheduler` component config (`KubeSchedulerConfiguration`) `kubescheduler.config.k8s.io/v1beta3`

* Change default clusterCIDRs from /16 to /14 in GCE configs allowing 1000 Node clusters by default. ([#25350](https://github.com/kubernetes/kubernetes/pull/25350), [@gmarek](https://github.com/gmarek))

* Add get/delete cluster, delete context to kubectl config ([#29821](https://github.com/kubernetes/kubernetes/pull/29821), [@alexbrand](https://github.com/alexbrand))
* rkt: Force `rkt fetch` to fetch from remote to conform the image pull policy. ([#31378](https://github.com/kubernetes/kubernetes/pull/31378), [@yifan-gu](https://github.com/yifan-gu))