- Updated `kubeadm` to use the `InitialCorruptCheck=true` etcd feature gate instead of the deprecated `--experimental-initial-corrupt-check` flag. Also replaced the use of `--experimental-watch-progress-notify-interval` with its graduated counterpart `--watch-progress-notify-interval`. ([#132838](https://github.com/kubernetes/kubernetes/pull/132838), [@AwesomePatrol](https://github.com/AwesomePatrol))

   *
   * @param mayInterruptIfRunning {@code true} if the thread executing this task should be
   *     interrupted; otherwise, in-progress tasks are allowed to complete, but the step will be
   *     cancelled regardless
   * @return {@code false} if the step could not be cancelled, typically because it has already

Node-local DNS cache feature is available in Alpha. This feature deploys a lightweight DNS caching Daemonset that avoids the conntrack and converts queries from UDP to more reliable TCP.
PodReady++ feature now has `kubectl` CLI support.

Progress was made towards finalizing the IPv6 dual stack support KEP and support for topological routing of services.

### SIG Node

  fun readAndWriteOverlapsMaintainConsistency(parameters: Pair<FileSystem, Boolean>) {
    setUp(parameters.first, parameters.second)
    Assumptions.assumeFalse(windows) // Can't edit while a read is in progress.

    val v1Creator = cache.edit("k1")!!
    v1Creator.setString(0, "AAaa")
    v1Creator.setString(1, "BBbb")
    v1Creator.commit()

    cache["k1"]!!.use { snapshot1 ->

      public void run() {
        cache.refresh(refreshKey);
        getFinishedSignal.countDown();
      }
    }.start();

    getStartedSignal.await();

    // computation is in progress; asMap shouldn't have changed
    assertEquals(1, map.size());
    assertFalse(map.containsKey(getKey));
    assertSame(refreshKey, map.get(refreshKey));

    // let computation complete

    expected: String?,
    source: Source?,
  ) {
    val actual = source!!.buffer().readUtf8()
    assertThat(actual).isEqualTo(expected)
  }

  /**
   * Returns true when all work currently in progress by the watchdog have completed. This method
   * creates more work for the watchdog and waits for that work to be executed. When it is, we know
   * work that preceded this call is complete.
   */

* kubeadm alpha certs command now skip missing files ([#85092](https://github.com/kubernetes/kubernetes/pull/85092), [@fabriziopandini](https://github.com/fabriziopandini))

_","flag","firing","memory","fired","locked","list","queue","firingIndex","fire","once","stopOnFalse","remove","disable","lock","fireWith","Deferred","func","tuples","state","always","deferred","catch","pipe","fns","newDefer","tuple","returned","progress","notify","onFulfilled","onRejected","onProgress","maxDepth","depth","handler","special","that","mightThrow","TypeError","notifyWith","resolveWith","process","exceptionHook","rejectWith","getErrorHook","getStackHook","setTimeout","stateString","...

This is the first Kubernetes release for this SIG! In v1.12, SIG Cloud Provider focused on building the processes and infrastructure to better support existing and new cloud providers. Some of these initiatives (many of which are still in progress) are:

- Reporting E2E conformance test results to TestGrid from every cloud provider (in collaboration with SIG Testing & SIG Release)

   * the map are reflected in the multimap, and vice versa. If the map is modified while an
   * iteration over one of the multimap's collection views is in progress (except through the
   * iterator's own {@code remove} operation, or through the {@code setValue} operation on a map
   * entry returned by the iterator), the results of the iteration are undefined.
   *