retryCtx, cancel := context.WithCancel(ctx)

	// Indicate to our routine to exit cleanly upon return.
	defer cancel()

	r := rand.New(rand.NewSource(time.Now().UnixNano()))

	// Migrate storage format if needed.
	for {
		// Migrate IAM configuration, if necessary.
		if err := saveIAMFormat(retryCtx, sys.store); err != nil {
			if configRetriableErrors(err) {

		panic("doAllThreadsSyscall not supported with cgo enabled")
	}

	// STW to guarantee that user goroutines see an atomic change to thread
	// state. Without STW, goroutines could migrate Ms while change is in
	// progress and e.g., see state old -> new -> old -> new.
	//
	// N.B. Internally, this function does not depend on STW to
	// successfully change every thread. It is only needed for user

  - support for the `v1alpha3` configuration file format is deprecated and will be removed in 1.14. Use `kubeadm config migrate` to migrate `v1alpha3` configuration files to `v1beta1`, which provides improvements in image repository management, addons configuration, and other areas. The documentation for `v1beta1` can be found here: https://godoc.org/k8s.io/kubernetes/cmd/kubea...

- `kubeadm.k8s.io/v1beta2` has been deprecated and will be removed in a future release, possibly in 3 releases (one year). You should start using `kubeadm.k8s.io/v1beta3` for new clusters. To migrate your old configuration files on disk you can use the `kubeadm config migrate` command. ([#107013](https://github.com/kubernetes/kubernetes/pull/107013), [@pacoxu](https://github.com/pacoxu))

   * this reason.
   *
   * <p><b>Java 8+ users:</b> many use cases for this method are better addressed by {@link
   * java.util.stream.Stream#map}. This method is not being deprecated, but we gently encourage you
   * to migrate to streams.
   */
  public static <F extends @Nullable Object, T extends @Nullable Object> List<T> transform(
      List<F> fromList, Function<? super F, ? extends T> function) {
    return (fromList instanceof RandomAccess)

    // but such ops might be present in the input from upstream like TFRT
    // compilation. Later on, this could be merged in the legalization pass when
    // we migrate bridge to StableHLO.

    // TODO(b/259459405): Avoid this peculiar use through some refactoring in
    // the caller.
    // This needs to happen before legalization.

   * this reason.
   *
   * <p><b>Java 8+ users:</b> many use cases for this method are better addressed by {@link
   * java.util.stream.Stream#map}. This method is not being deprecated, but we gently encourage you
   * to migrate to streams.
   */
  public static <F extends @Nullable Object, T extends @Nullable Object> List<T> transform(
      List<F> fromList, Function<? super F, ? extends T> function) {
    return (fromList instanceof RandomAccess)

* The deprecated `ThirdPartyResource` (TPR) API was removed.
  To avoid losing your TPR data, [migrate to CustomResourceDefinition](https://kubernetes.io/docs/tasks/access-kubernetes-api/migrate-third-party-resource/).

* The following deprecated flags were removed from `kube-controller-manager`:

  * `replication-controller-lookup-cache-size`

 * addressed by the new {@link java.util.stream.Stream} library. Read the method documentation below
 * for comparisons. This class is not being deprecated, but we gently encourage you to migrate to
 * streams.
 *
 * <p><i>Performance notes:</i> Unless otherwise noted, all of the iterables produced in this class
 * are <i>lazy</i>, which means that their iterators only advance the backing iteration when

	// later where N is how long it takes their plugin to pick up new config
	// and M is extra buffer to allow the API server to process the config.
	// At that point, they are guaranteed to either migrate to the new key
	// or get errors during the migration.
	//
	// If the API server coasted forever on the last DEK/seed, they would need
	// to actively check if it had observed the new key ID before starting