* references, instead of calling {@code equals}, to determine whether a provided object matches
   * an element in the set. For example, {@code contains} returns {@code false} when passed an
   * object that equals a set member, but isn't the same instance. This behavior is similar to the
   * way {@code IdentityHashMap} handles key lookups.
   *
   * @since 8.0
   */
  public static <E extends @Nullable Object> Set<E> newIdentityHashSet() {

* Upgrade to etcd client 3.3.17 to fix bug where etcd client does not parse IPv6 addresses correctly when members are joining, and to fix bug where failover on multi-member etcd cluster fails certificate check on DNS mismatch ([#83968](https://github.com/kubernetes/kubernetes/pull/83968), [@jpbetz](https://github.com/jpbetz))

* If the cluster node count exceeds the GCE TargetPool maximum (currently 1000), ([#25178](https://github.com/kubernetes/kubernetes/pull/25178), [@zmerlynn](https://github.com/zmerlynn))
    * randomly select which nodes are members of Kubernetes External Load Balancers.
* Clarify supported version skew between masters, nodes, and clients ([#25087](https://github.com/kubernetes/kubernetes/pull/25087), [@ihmccreery](https://github.com/ihmccreery))

		HTTPStatusCode: http.StatusBadRequest,
	},
	ErrParseExpectedMember: {
		Code:           "ParseExpectedMember",
		Description:    "The SQL expression contains an unsupported use of MEMBER.",
		HTTPStatusCode: http.StatusBadRequest,
	},
	ErrParseUnsupportedSelect: {
		Code:           "ParseUnsupportedSelect",
		Description:    "The SQL expression contains an unsupported use of SELECT.",

- Kubeadm: during "reset" do not remove the only remaining stacked etcd member from the cluster and just proceed with the cleanup of the local etcd storage. ([#91145](https://github.com/kubernetes/kubernetes/pull/91145), [@tnqn](https://github.com/tnqn)) [SIG Cluster Lifecycle]

- Kubeadm: Fixed an issue where etcd member promotion failed with an error indicating the member was already promoted. ([#130782](https://github.com/kubernetes/kubernetes/pull/130782), [@BernardMC](https://github.com/BernardMC))

- Kubeadm init phase certs now support the `--csr-only` option, simplifying custom CA creation.
- `kubeadm join --experimental-control-plane` now automatically adds a new etcd member for `local etcd` mode, further simplifying required tasks for HA clusters setup.
- Improvements were made to `kubeadm reset` related to cleaning  etcd and notifying the user about the state of iptables.

[Setup topics]: https://kubernetes.io/docs/setup/pick-right-solution/
[SIGs]: https://github.com/kubernetes/community/blob/master/sig-list.md


## Major Themes

Kubernetes is developed by community members whose work is organized into
[Special Interest Groups][]. For the 1.8 release, each SIG provides the
themes that guided their work.

- Moved fluentd-elasticsearch addon images to community controlled location ([#73819](https://github.com/kubernetes/kubernetes/pull/73819), [@coffeepac](https://github.com/coffeepac))
- Removed local etcd members from the etcd cluster when `kubeadm reset` ([#74112](https://github.com/kubernetes/kubernetes/pull/74112), [@pytimer](https://github.com/pytimer))

- If `kubeadm reset` finds no etcd member ID for the peer it removes during the `remove-etcd-member` phase, it continues immediately to other phases, instead of retrying the phase for up to 3 minutes before continuing. ([#117916](https://github.com/kubernetes/kubernetes/pull/117916), [@dlipovetsky](https://github.com/dlipovetsky))...