## Urgent Upgrade Notes
### (No, really, you MUST read this before you upgrade)
#### Cluster Lifecycle
- Kubeadm: add a new `kubelet-finalize` phase as part of the `init` workflow and an experimental sub-phase to enable automatic kubelet client certificate rotation on primary control-plane nodes.

Ao invés disso, sendo um sistema "assíncrono", uma vez finalizada, a tarefa pode esperar na fila um pouco (alguns microssegundos) para que o computador / programa finalize o que quer que esteja fazendo, e então volte para pegar o resultado e continue trabalhando com ele.

                    # from the generator independently, so
                    # `anyio.fail_after` never wraps the generator's
                    # `__anext__` directly - avoiding CancelledError that
                    # would finalize the generator and also working for sync
                    # generators running in a thread pool.
                    #
                    # This context manager is entered on the request-scoped

  
  With this patch, the external provisioner can remove the finalizer in next reconcile loop. Unfortunately if the provious existing pv has the Failed state, this patch won't take effort. It requires users to remove finalizer. ([#126043](https://github.com/kubernetes/kubernetes/pull/126043), [@carlory](https://github.com/carlory)) [SIG Apps and Storage]

     *
     * 2) To detect when FinalizableReference's class loader has to be garbage collected, at which
     * point, Finalizer can stop running
     */

    Finalizer finalizer = new Finalizer(finalizableReferenceClass, queue, frqReference);
    String threadName = "com.google.common.base.internal.Finalizer";
    Thread thread = null;
    if (bigThreadConstructor != null) {
      try {
        boolean inheritThreadLocals = false;

     *
     * 2) To detect when FinalizableReference's class loader has to be garbage collected, at which
     * point, Finalizer can stop running
     */

    Finalizer finalizer = new Finalizer(finalizableReferenceClass, queue, frqReference);
    String threadName = "com.google.common.base.internal.Finalizer";
    Thread thread = null;
    if (bigThreadConstructor != null) {
      try {
        boolean inheritThreadLocals = false;

          std::vector<string>(desc->colocation_constraints.begin(),
                              desc->colocation_constraints.end()));
    }
    status->status = desc->node_builder.Finalize(&desc->graph->graph, &ret,
                                                 /*consume=*/true);

    if (status->status.ok()) {
      // Run shape inference function for newly added node.

  /** Reference to Finalizer.startFinalizer(). */
  private static final FinalizerStarter finalizerStarter;

  static {
    Class<?> finalizer = loadFinalizer(new SystemLoader(), new DecoupledLoader());
    finalizerStarter =
        finalizer != null
            ? new ReflectiveStarter(getStartFinalizer(finalizer))
            : new DirectStarter();
  }

  /** Reference to Finalizer.startFinalizer(). */
  private static final FinalizerStarter finalizerStarter;

  static {
    Class<?> finalizer = loadFinalizer(new SystemLoader(), new DecoupledLoader());
    finalizerStarter =
        finalizer != null
            ? new ReflectiveStarter(getStartFinalizer(finalizer))
            : new DirectStarter();
  }

    }

    /**
     * Finalizes and removes the preauth integrity context for a session.
     *
     * @param sessionId the session identifier
     */
    public void finalizeSession(String sessionId) {
        PreauthIntegrityContext context = sessionContexts.remove(sessionId);
        if (context != null) {
            context.invalidate();