## Changelog since v1.15.0

### Other notable changes

* kubeadm: implement support for concurrent add/remove of stacked etcd members ([#79677](https://github.com/kubernetes/kubernetes/pull/79677), [@neolit123](https://github.com/neolit123))

- Users might specify the `kubectl.kubernetes.io/default-container` annotation in a Pod to...

### IPv4/IPv6 run

IPv4/IPv6 dual-stack has been reimplemented for 1.20 to support dual-stack Services, based on user and community feedback. If your cluster has dual-stack enabled, you can create Services which can use IPv4, IPv6, or both, and you can change this setting for existing Services. Details are available in updated [IPv4/IPv6 dual-stack docs](https://docs.k8s.io/concepts/services-networking/dual-stack/), which cover the nuanced array of options.

import (
	"text/scanner"

	"cmd/internal/src"
)

// A Stack is a stack of TokenReaders. As the top TokenReader hits EOF,
// it resumes reading the next one down.
type Stack struct {
	tr []TokenReader
}

// Push adds tr to the top (end) of the input stack. (Popping happens automatically.)
func (s *Stack) Push(tr TokenReader) {
	s.tr = append(s.tr, tr)
}

func (s *Stack) Next() ScanToken {
	tos := s.tr[len(s.tr)-1]

2E43..2E44    ; valid                  ;      ; NV8    # 9.0  DASH WITH LEFT UPTURN..DOUBLE SUSPENSION MARK
2E45..2E49    ; valid                  ;      ; NV8    # 10.0 INVERTED LOW KAVYKA..DOUBLE STACKED COMMA
2E4A..2E4E    ; valid                  ;      ; NV8    # 11.0 DOTTED SOLIDUS..PUNCTUS ELEVATUS MARK
2E4F          ; valid                  ;      ; NV8    # 12.0 CORNISH VERSE DIVIDER

        been moved to the GitHub
        repository[keras-team/keras](https://github.com/keras-team/keras). The
        API endpoints for `tf.keras` stay unchanged, but are now backed by the
        `keras` PIP package. The existing code in tensorflow/python/keras is a
        staled copy and will be removed in future release (2.7). Please remove
        any imports to `tensorflow.python.keras` and replace them with public
        tf.keras API instead.

     * being the root element. This is required to be tracked here to get the
     * structure right when rerunning a test task tests.
     * */
    private TestDescriptorInternal rootTestDescriptor;

    RerunTestResultProcessor(TestResultProcessor delegate) {
        this.delegate = delegate;
    }

    @Override
    public void started(TestDescriptorInternal descriptor, TestStartEvent testStartEvent) {

   * tasks. Second, the returned list will always be empty, as any submitted task is considered to
   * have started execution. This applies also to tasks given to {@code invokeAll} or {@code
   * invokeAny} which are pending serial execution, even the subset of the tasks that have not yet
   * started execution. It is unclear from the {@code ExecutorService} specification if these should

				started := time.Now()
				dl, _ := ctx.Deadline()
				if testing.Verbose() {
					fmt.Println(GetCaller(ctx).Name, "Server deadline:", time.Until(dl))
				}
				<-ctx.Done()
				serverCanceled <- time.Since(started)
				if testing.Verbose() {
					fmt.Println(GetCaller(ctx).Name, "Server Context canceled with", ctx.Err(), "after", time.Since(started))
				}
				return nil
			},

)

//go:generate msgp -file $GOFILE -unexported

// metacache contains a tracked cache entry.
type metacache struct {
	// do not re-arrange the struct this struct has been ordered to use less
	// space - if you do so please run https://github.com/orijtech/structslop
	// and verify if your changes are optimal.
	ended        time.Time  `msg:"end"`
	started      time.Time  `msg:"st"`
	lastHandout  time.Time  `msg:"lh"`