// is ready to be read.
		//
		// This is possible to be lock free because
		// - xl.meta for inlined objects has already read the data
		//   into memory, any mutation on xl.meta subsequently is
		//   inconsequential to the overall read operation.
		// - xl.meta metadata is still verified for quorum under lock()
		//   however writing the response doesn't need to serialize

* The dynamic Kubelet config feature will now update the config in the event of a ConfigMap mutation, which reduces the chance for silent config skew. Only name, namespace, and kubeletConfigKey may now be set in `Node.Spec.ConfigSource.ConfigMap`. The least disruptive pattern for config management is still to create a new ConfigMap and incrementally...

### **API Machinery**

#### **Admission Control**

*   Admission webhooks are now in beta, and include the following:
    *   Mutation support for admission webhooks. ([#54892](https://github.com/kubernetes/kubernetes/pull/54892),[ @caesarxuchao](https://github.com/caesarxuchao))

 in your manifest. An object with a spec.selector value that does not match the labels in
 its spec.template is invalid.

 - Selector mutation is disabled for all kinds in the
 app/v1beta2 group version, because the controllers in the workloads API do not handle
 selector mutation in
 a consistent way. This restriction may be lifted in the future, but
 it is likely that that selectors will remain immutable after the move to v1.

- Kubeadm: retry `kubeadm-config` ConfigMap creation or mutation if the apiserver is not responding. This will improve resiliency when joining new control plane nodes. ([#85763](https://github.com/kubernetes/kubernetes/pull/85763), [@ereslibre](https://github.com/ereslibre)) [SIG Cluster Lifecycle]

* Added rkt binary to GCI ([#35321](https://github.com/kubernetes/kubernetes/pull/35321), [@vishh](https://github.com/vishh))
* Fixed mutation warning in Attach/Detach controller ([#35273](https://github.com/kubernetes/kubernetes/pull/35273), [@jsafrane](https://github.com/jsafrane))

* Delete all firewall rules (and optionally network) on GCE/GKE cluster teardown ([#34577](https://github.com/kubernetes/kubernetes/pull/34577), [@ixdy](https://github.com/ixdy))
* Fixed mutation warning in Attach/Detach controller ([#35273](https://github.com/kubernetes/kubernetes/pull/35273), [@jsafrane](https://github.com/jsafrane))

#### TLS Bootstrapping
* [alpha] Rotation of the server TLS certificate on the kubelet. See [TLS bootstrapping - approval controller](https://kubernetes.io/docs/admin/kubelet-tls-bootstrapping/#approval-controller).

- Enabled a mechanism for concurrent log rotatation via `kubelet` using a configuration entity of `containerLogMaxWorkers` which controls the maximum number of concurrent rotation that can be performed and an interval configuration of `containerLogMonitorInterval` that can aid is configuring the monitoring duration to best suite your cluster's log generation standards. ([#114301](https://github.com/kubernetes/kubernetes/pull/114301), [@harshanarayana](https://github.com/harshanarayana)) [SIG...

   * ordering information is updated. This is used to avoid lock contention by recording a memento
   * of reads and delaying a lock acquisition until the threshold is crossed or a mutation occurs.
   *
   * <p>This must be a (2^n)-1 as it is used as a mask.
   */
  static final int DRAIN_THRESHOLD = 0x3F;

  /**