- [Urgent Upgrade Notes](#urgent-upgrade-notes)
    - [(No, really, you MUST do this before you upgrade)](#no-really-you-must-do-this-before-you-upgrade)
  - [Known Issues](#known-issues)
  - [Deprecations](#deprecations)
  - [Major Themes](#major-themes)
    - [SIG API Machinery](#sig-api-machinery)
    - [SIG Auth](#sig-auth)
    - [SIG AWS](#sig-aws)
    - [SIG Azure](#sig-azure)
    - [SIG Big Data](#sig-big-data)

        out.writeObject(entry.getKey());
        out.writeObject(entry.getValue());
      }
      out.writeObject(null); // terminate entries
    }

    @SuppressWarnings("deprecation") // serialization of deprecated feature
    @J2ktIncompatible // java.io.ObjectInputStream
    MapMaker readMapMaker(ObjectInputStream in) throws IOException {
      int size = in.readInt();
      return new MapMaker()

        `tf.data.Dataset.bucket_by_sequence_length` and deprecating the
        experimental endpoint.
    *   Promoting `tf.data.experimental.get_single_element` API to
        `tf.data.Dataset.get_single_element` and deprecating the experimental
        endpoint.
    *   Promoting `tf.data.experimental.group_by_window` API to
        `tf.data.Dataset.group_by_window` and deprecating the experimental
        endpoint.

        out.writeObject(entry.getKey());
        out.writeObject(entry.getValue());
      }
      out.writeObject(null); // terminate entries
    }

    @SuppressWarnings("deprecation") // serialization of deprecated feature
    @J2ktIncompatible // java.io.ObjectInputStream
    MapMaker readMapMaker(ObjectInputStream in) throws IOException {
      int size = in.readInt();
      return new MapMaker()

## **Deprecations**

### Cluster provisioning scripts
* cluster/ubuntu: Removed due to [deprecation](https://github.com/kubernetes/kubernetes/tree/master/cluster#cluster-configuration) and lack of maintenance. ([#44344](https://github.com/kubernetes/kubernetes/pull/44344), [@mikedanese](https://github.com/mikedanese))

      - [Cluster Lifecycle](#cluster-lifecycle)
      - [Network](#network)
      - [Scheduling](#scheduling)
      - [Storage](#storage)
      - [Windows](#windows)
  - [Deprecations and Removals](#deprecations-and-removals)
  - [Metrics Changes](#metrics-changes)
    - [Added metrics](#added-metrics)
    - [Deprecated/changed metrics](#deprecatedchanged-metrics)
  - [Notable Features](#notable-features)

requestAnimationFrame(this.update);\n\n  /**\n   * Collection of utilities useful when writing custom modifiers.\n   * Starting from version 1.7, this method is available only if you\n   * include `popper-utils.js` before `popper.js`.\n   *\n   * **DEPRECATION**: This way to access PopperUtils is deprecated\n   * and will be removed in v2! Use the PopperUtils module directly instead.\n   * Due to the high instability of the methods contained in Utils, we can't\n   * guarantee them to follow semver. Use...

    - [**Node**](#node-1)
    - [**Network**](#network-1)
    - [**Scheduling**](#scheduling)
    - [**Storage**](#storage-1)
    - [**OpenStack**](#openstack-1)
  - [Known Issues](#known-issues)
  - [Deprecations](#deprecations)
    - [**API Machinery**](#api-machinery-2)
    - [**Auth**](#auth-2)
    - [**Cluster Lifecycle**](#cluster-lifecycle-2)
    - [**Network**](#network-2)
    - [**Storage**](#storage-2)

    - [SIG Storage](#sig-storage)
    - [SIG Windows](#sig-windows)
  - [Known Issues](#known-issues)
  - [Before Upgrading](#before-upgrading)
      - [New Deprecations](#new-deprecations)
      - [Removed Deprecations](#removed-deprecations)
      - [Graduated to Stable/GA](#graduated-to-stablega)
      - [Graduated to Beta](#graduated-to-beta)
    - [New alpha features](#new-alpha-features)

  - [Major Themes](#major-themes)
  - [Features](#features)
  - [Known Issues](#known-issues)
  - [Notable Changes to Existing Behavior](#notable-changes-to-existing-behavior)
  - [Deprecations](#deprecations)
  - [Action Required Before Upgrading](#action-required-before-upgrading)
  - [External Dependency Version Information](#external-dependency-version-information)