*  Fix: Release the connection if `Authenticator` throws an exception.
 *  Fix: Change the declaration of `OkHttpClient.cache()` to return a `@Nullable Cache`. The return
    value has always been nullable but it wasn't declared properly.
 *  Fix: Reverse suppression of connect exceptions. When both a call and its retry fail, we now
    throw the initial exception which is most likely to be actionable.

- Add admission plugin that validates PodGroup resources reference an existing Workload and match the declared PodGroupTemplate spec. ([#137464](https://github.com/kubernetes/kubernetes/pull/137464), [@helayoty](https://github.com/helayoty)) [SIG API Machinery, Apps, Auth, CLI, Cloud Provider, Etcd, Node, Scheduling and Testing]

    * This is useful while calling external services, performing costly computation, etc.
    * This also means that if a dependency was declared as a *path operation decorator* dependency, possibly at the router level (with `.include_router()`) and then it is declared again in a specific *path operation*, the dependency will be called only once.

              return axes.get(index).asList();
            }

            @Override
            boolean isPartialView() {
              return true;
            }

            // redeclare to help optimizers with b/310253115
            @SuppressWarnings("RedundantOverride")
            @Override
            @J2ktIncompatible
            @GwtIncompatible

	case dns.ErrInvalidBucketName:
		apiErr = ErrInvalidBucketName
	case dns.ErrBucketConflict:
		apiErr = ErrBucketAlreadyExists
	default:
		if strings.Contains(err.Error(), "request declared a Content-Length") {
			apiErr = ErrIncompleteBody
		} else {
			apiErr = ErrInternalError
		}
	}

	return apiErr
}

var noError = APIError{}

* Fix controller-manager race condition issue which cause endpoints flush during restart ([#23035](https://github.com/kubernetes/kubernetes/pull/23035), [@xinxiaogang](https://github.com/xinxiaogang))
* MESOS: forward globally declared cadvisor housekeeping flags ([#22974](https://github.com/kubernetes/kubernetes/pull/22974), [@jdef](https://github.com/jdef))

- The initialization of nodes using external cloud providers now waits for the providerID value to be available before untainting it. This ensures that nodes are not declared Ready without necessary information such as the providerID and zone labels, which are required for integrations like load balancers to function correctly. Cloud providers that do not implement the GetInstanceProviderID method will not require the...

- Scheduler policy configs can no longer be declared multiple times ([#83963](https://github.com/kubernetes/kubernetes/pull/83963), [@damemi](https://github.com/damemi))

                tools like Swagger UI, used in the automatic path `/docs`.

                It's not required to specify all the tags used.

                The tags that are not declared MAY be organized randomly or based
                on the tools' logic. Each tag name in the list MUST be unique.

                The value of each item is a `dict` containing:

- Fixed a situation when, sometimes, the scheduler incorrectly placed a pod in the `unschedulable` queue instead of the `backoff` queue. This happened when some plugin previously declared the pod as `unschedulable` and then in a later attempt encounters some other error. Scheduling of that pod then got delayed by up to five minutes, after which periodic flushing moved the pod back into the `active` queue. ([#120334](https://githu...