sockets and HTTP/2 connections.**

    Previously if you configured a ping interval that would cause OkHttp to send
    pings, but it did not track whether the reply pongs were received. With this
    update OkHttp requires that every ping receive a response: if it does not
    the connection will be closed and the listener's `onFailure()` method will
    be called.

* `metrics-server` is now the recommended way to provide the resource
  metrics API. Deploy `metrics-server` as an add-on in the same way that you deploy Heapster.

##### Cluster Autoscaler

* Cluster autoscaler is now GA
* Cluster support size is increased to 1000 nodes
* Respect graceful pod termination of up to 10 minutes

    val response = call.execute()
    assertThat(response.body.string()).isEqualTo("ABC")
    assertThat(response.protocol).isEqualTo(protocol)

    // Confirm a single ping was sent and received, and its reply was sent and received.
    val logs = testLogHandler.takeAll()
    assertThat(countFrames(logs, "FINE: >> 0x00000000     8 PING          "))
      .isEqualTo(1)

     * is the only one in use, but if we encounter nested concatenations, we start a deque of
     * meta-iterators rather than letting the nesting get arbitrarily deep.  This keeps each
     * operation O(1).
     */

    private @Nullable Iterator<? extends Iterator<? extends T>> topMetaIterator;

    // Only becomes nonnull if we encounter nested concatenations.

## Prerequisites

- Install and configure MinIO Server from [here](https://docs.min.io/community/minio-object-store/operations/deployments/baremetal-deploy-minio-on-redhat-linux.html#procedure).
- Install and configure MinIO Client from [here](https://docs.min.io/community/minio-object-store/reference/minio-mc.html#quickstart).

```
$ mc admin config get myminio | grep notify

    val stream = connection.newStream(headerEntries("c", "cola"), false)
    assertThat(stream.takeHeaders()).isEqualTo(headersOf("a", "android"))
    connection.writePingAndAwaitPong() // Ensure that the 2nd SYN REPLY has been received.

    // Verify the peer received what was expected.
    val synStream = peer.takeFrame()
    assertThat(synStream.type).isEqualTo(Http2.TYPE_HEADERS)
    val ping = peer.takeFrame()

- cloud.google.com/go/dataplex: v1.6.0 → v1.9.0
- cloud.google.com/go/dataqna: v0.7.0 → v0.8.1
- cloud.google.com/go/datastore: v1.11.0 → v1.13.0
- cloud.google.com/go/datastream: v1.7.0 → v1.10.0
- cloud.google.com/go/deploy: v1.8.0 → v1.13.0
- cloud.google.com/go/dialogflow: v1.32.0 → v1.40.0
- cloud.google.com/go/dlp: v1.9.0 → v1.10.1
- cloud.google.com/go/documentai: v1.18.0 → v1.22.0
- cloud.google.com/go/domains: v0.8.0 → v0.9.1

* kubeadm now accepts `--apiserver-extra-args`, `--controller-manager-extra-args` and `--scheduler-extra-args`, making it possible to override / specify additional flags for control plane components. One good example is to deploy Kubernetes with a different admission-control flag on API server. ([#58080](https://github.com/kubernetes/kubernetes/pull/58080), [@simonferquel](https://github.com/simonferquel))

    <glob pattern="*.dist"/>
    <glob pattern="*.distz"/>
    <glob pattern="*.pkg"/>
    <glob pattern="*.bpk"/>
    <glob pattern="*.dump"/>
    <glob pattern="*.elc"/>
    <glob pattern="*.deploy"/>
  </mime-type>

  <mime-type type="application/oda">
    <glob pattern="*.oda"/>
  </mime-type>
  <mime-type type="application/oebps-package+xml">
    <glob pattern="*.opf"/>
  </mime-type>

    - [Container Storage Interface graduations](#container-storage-interface-graduations)
    - [SIG Windows development tools](#sig-windows-development-tools)
    - [Deploy a more secure control plane with kubeadm](#deploy-a-more-secure-control-plane-with-kubeadm)
    - [etcd moves to version 3.5.0](#etcd-moves-to-version-350)
    - [Kubernetes Node system swap support](#kubernetes-node-system-swap-support)