* Fixed a race condition causing apiserver crashes during etcd healthchecking. ([#60069](https://github.com/kubernetes/kubernetes/pull/60069), [@wojtek-t](https://github.com/wojtek-t))

* Restores the ability of older clients to delete and scale jobs with initContainers ([#59880](https://github.com/kubernetes/kubernetes/pull/59880), [@liggitt](https://github.com/liggitt))
* Fix race causing apiserver crashes during etcd healthchecking ([#60069](https://github.com/kubernetes/kubernetes/pull/60069), [@wojtek-t](https://github.com/wojtek-t))

* Use a more reliable way to get total physical memory on windows nodes ([#57124](https://github.com/kubernetes/kubernetes/pull/57124), [@JiangtianLi](https://github.com/JiangtianLi))
* Fix race causing apiserver crashes during etcd healthchecking ([#60069](https://github.com/kubernetes/kubernetes/pull/60069), [@wojtek-t](https://github.com/wojtek-t))

	_         int32 // For 64 bits alignment
	lastConn  int64

	// HealthCheckFn is the function set to test for health.
	// If not set the client will not keep track of health.
	// Calling this returns true or false if the target
	// is online or offline.
	HealthCheckFn func() bool

	// HealthCheckRetryUnit will be used to calculate the exponential

	if healthCheck {
		// Use a separate client to avoid recursive calls.
		healthClient := rest.NewClient(serverURL, globalInternodeTransport, newCachedAuthToken())
		healthClient.NoMetrics = true
		restClient.HealthCheckFn = func() bool {
			ctx, cancel := context.WithTimeout(context.Background(), restClient.HealthCheckTimeout)
			defer cancel()
			respBody, err := healthClient.Call(ctx, storageRESTMethodHealth, nil, nil, -1)

	healthClient := rest.NewClient(serverURL, globalInternodeTransport, newCachedAuthToken())
	healthClient.NoMetrics = true

	// Construct a new health function.
	restClient.HealthCheckFn = func() bool {
		ctx, cancel := context.WithTimeout(context.Background(), restClient.HealthCheckTimeout)
		defer cancel()
		respBody, err := healthClient.Call(ctx, peerRESTMethodHealth, nil, nil, -1)

		if client == nil {
			continue
		}
		wg.Add(1)
		go func(idx int, client *peerRESTClient) {
			defer wg.Done()
			nodesOnlineIndex[idx] = client.restClient.HealthCheckFn()
		}(idx, client)
	}
	wg.Wait()

	for _, online := range nodesOnlineIndex {
		if online {
			nodesOnline++
		} else {
			nodesOffline++
		}
	}