* etcd version 2.2.1
  * etcd version 3.0.14 [has also been validated](https://k8s-gubernator.appspot.com/builds/kubernetes-jenkins/logs/ci-kubernetes-e2e-gce-etcd3/) but does require [specific configuration steps](https://coreos.com/blog/migrating-applications-etcd-v3.html)

## Changelog since v1.5.0-beta.3

### Other notable changes

    assertThat(result.get(1)).isEqualTo("barfoo");
    assertThat(result.get(2)).isEqualTo("barfoo");
    assertThat(cache.getUnchecked(key)).isEqualTo("barfoo");
  }

  // Test ignored because it is extremely flaky in CI builds
  @SuppressWarnings("ThreadPriorityCheck") // doing our best to test for races
  public void
      ignoreTestExpandDuringRefresh()
      throws InterruptedException, ExecutionException {

    assertThat(result.get(1)).isEqualTo("barfoo");
    assertThat(result.get(2)).isEqualTo("barfoo");
    assertThat(cache.getUnchecked(key)).isEqualTo("barfoo");
  }

  // Test ignored because it is extremely flaky in CI builds
  @SuppressWarnings("ThreadPriorityCheck") // doing our best to test for races
  public void
      ignoreTestExpandDuringRefresh()
      throws InterruptedException, ExecutionException {

* Set Dashboard UI version to v1.1.0 ([#27869](https://github.com/kubernetes/kubernetes/pull/27869), [@bryk](https://github.com/bryk))

### Other notable changes

* Build: Add KUBE_GCS_RELEASE_BUCKET_MIRROR option to push-ci-build.sh ([#28172](https://github.com/kubernetes/kubernetes/pull/28172), [@zmerlynn](https://github.com/zmerlynn))

	}

	// Avoid allocating more than half of the available memory
	if maxN := availableMemory() / (blockSizeV2 * 2); n > maxN {
		n = maxN
	}

	if globalIsCICD || strconv.IntSize == 32 {
		n = 256 // 256MiB for CI/CD environments is sufficient or on 32bit platforms.
	}

	// Initialize byte pool once for all sets, bpool size is set to
	// setCount * setDriveCount with each memory upto blockSizeV2.

- Kubeadm: update references to legacy artifacts locations, the `ci-cross` prefix has been removed from the version match as it does not exist in the new `gs://k8s-release-dev` bucket. ([#103813](https://github.com/kubernetes/kubernetes/pull/103813), [@SataQiu](https://github.com/SataQiu))

* - kubeadm now supports "ci/latest-1.8" or "ci-cross/latest-1.8" and similar labels. ([#49119](https://github.com/kubernetes/kubernetes/pull/49119), [@kad](https://github.com/kad))

- Bumped cadvisor version to `v0.47.3`. ([#119225](https://github.com/kubernetes/kubernetes/pull/119225), [@iholder101](https://github.com/iholder101))

### Other (Cleanup or Flake)

- Kubeadm: change the default image repository for CI images from 'gcr.io/kubernetes-ci-images' to 'gcr.io/k8s-staging-ci-images' ([#97087](https://github.com/kubernetes/kubernetes/pull/97087), [@SataQiu](https://github.com/SataQiu)) [SIG Cluster Lifecycle]

For detailed release notes on the three alpha features from SIG AWS, please refer to the following Changelogs: