### Node Components
* **Kubelet with the Docker-CRI implementation**
  * The Docker-CRI implementation is enabled by default.
  * It is not compatible with containers created by older Kubelets. It is
    recommended to drain your node before upgrade. If you choose to perform
    an in-place upgrade, the Kubelet will automatically restart all
    Kubernetes-managed containers on the node.

- Added `kubectl node drain` helper callbacks `OnPodDeletionOrEvictionStarted`
  and `OnPodDeletionOrEvictionFailed`; people extending `kubectl` can use these
  new callbacks for more granularity. Deprecated the `OnPodDeletedOrEvicted`

- kubectl: support multiple arguments for cordon/uncordon and drain ([#68655](https://github.com/kubernetes/kubernetes/pull/68655), [@goodluckbot](https://github.com/goodluckbot))

     */
    int threshold;

    /** The per-segment table. */
    volatile @Nullable AtomicReferenceArray<E> table;

    /**
     * A counter of the number of reads since the last write, used to drain queues on a small
     * fraction of read operations.
     */
    final AtomicInteger readCount = new AtomicInteger();

    Segment(MapMakerInternalMap<K, V, E, S> map, int initialCapacity) {

- The new flag `--chunk-size=SIZE` for `kubectl drain` has been promoted to beta, and enabled by default. This flag  may be used to alter the number of items or disable this feature when `0` is passed. ([#100148](https://github.com/kubernetes/kubernetes/pull/100148), [@KnVerey](https://github.com/KnVerey))...

    And yet you incessantly stand on your head--
      Do you think, at your age, it is right?'

    `In my youth,' Father William replied to his son,
      `I feared it might injure the brain;
    But, now that I'm perfectly sure I have none,
      Why, I do it again and again.'

    `You are old,' said the youth, `as I mentioned before,
      And have grown most uncommonly fat;

*   Added --dry-run option to kubectl drain. ([#52440](https://github.com/kubernetes/kubernetes/pull/52440),[ @juanvallejo](https://github.com/juanvallejo))

* New kubeDNS image fixes an issue where SRV records were incorrectly being compressed. Added manifest file for multiple arch images. ([#68430](https://github.com/kubernetes/kubernetes/pull/68430), [@prameshj](https://github.com/prameshj))
* Drain should delete terminal pods. ([#68767](https://github.com/kubernetes/kubernetes/pull/68767), [@ravisantoshgudimetla](https://github.com/ravisantoshgudimetla))



# v1.12.0-rc.1

- Fixed a bug where `kubectl` drain would consider a pod as having been deleted if an error occurs while calling the API. ([#122574](https://github.com/kubernetes/kubernetes/pull/122574), [@brianpursley](https://github.com/brianpursley))

- Fixes high CPU usage in kubectl drain ([#95260](https://github.com/kubernetes/kubernetes/pull/95260), [@amandahla](https://github.com/amandahla)) [SIG CLI]