* the segment.
   */
  final transient int segmentMask;

  /**
   * Shift value for indexing within segments. Helps prevent entries that end up in the same segment
   * from also ending up in the same bucket.
   */
  final transient int segmentShift;

  /** The segments, each of which is a specialized hash table. */
  final transient Segment<K, V, E, S>[] segments;

  /** The concurrency level. */

- Kubeadm: get k8s CI version markers from k8s infra bucket ([#98836](https://github.com/kubernetes/kubernetes/pull/98836), [@hasheddan](https://github.com/hasheddan)) [SIG Cluster Lifecycle and Release]

### Production images moved to community control

As of Kuberenetes v1.19, Kubernetes container images are stored on a community-controlled storage bucket, 
located at `{asia,eu,us}.gcr.io/k8s-artifacts-prod`. The `k8s.gcr.io` vanity domain has been updated 
to this new bucket. This brings production artifacts under community control.

### KubeSchedulerConfiguration graduates to Beta

- Kubeadm: get k8s CI version markers from k8s infra bucket ([#98836](https://github.com/kubernetes/kubernetes/pull/98836), [@hasheddan](https://github.com/hasheddan)) [SIG Cluster Lifecycle and Release]

2017          ; disallowed_STD3_mapped ; 0020 0333     # 1.1  DOUBLE LOW LINE
2018..2023    ; valid                  ;      ; NV8    # 1.1  LEFT SINGLE QUOTATION MARK..TRIANGULAR BULLET
2024..2026    ; disallowed                             # 1.1  ONE DOT LEADER..HORIZONTAL ELLIPSIS
2027          ; valid                  ;      ; NV8    # 1.1  HYPHENATION POINT

    zeroLengthPayload("POST")
  }

  @Test
  fun zeroLengthPost_HTTP_2() {
    enableProtocol(Protocol.HTTP_2)
    zeroLengthPost()
  }

  /** For example, creating an Amazon S3 bucket ends up as a zero-length POST.  */
  @Test
  fun zeroLengthPut() {
    zeroLengthPayload("PUT")
  }

  @Test
  fun zeroLengthPut_HTTP_2() {
    enableProtocol(Protocol.HTTP_2)

- Updated apiserver metric `request_filter_duration_seconds` to include a 10s, 15s and 30s bucket.
Updated apiserver metric `request_wait_duration_seconds` to include a 15s bucket. ([#118945](https://github.com/kubernetes/kubernetes/pull/118945), [@andrewsykim](https://github.com/andrewsykim))

- `apiserver_admission_webhook_admission_duration_seconds` buckets have been expanded, 25s is now the largest bucket size to match the webhook default timeout. ([#115802](https://github.com/kubernetes/kubernetes/pull/115802), [@logicalhan](https://github.com/logicalhan)) [SIG API Machinery and Instrumentation]

- Kubeadm: get k8s CI version markers from k8s infra bucket ([#98836](https://github.com/kubernetes/kubernetes/pull/98836), [@hasheddan](https://github.com/hasheddan)) [SIG Cluster Lifecycle and Release]

- Fixed admission metrics histogram bucket sizes to cover 25ms to ~2.5 seconds. ([#78608](https://github.com/kubernetes/kubernetes/pull/78608), [@jpbetz](https://github.com/jpbetz))