- Kubeadm: fix a bug where file copy(backup) could not be executed correctly on Windows platform during upgrade ([#117861](https://github.com/kubernetes/kubernetes/pull/117861), [@SataQiu](https://github.com/SataQiu)) [SIG Cluster Lifecycle]

		}
	}

	// expected error response when the unsigned HTTP request is not permitted.
	unsupportedSignature := getAPIError(ErrSignatureVersionNotSupported).HTTPStatusCode
	if rec.Code != unsupportedSignature {

### Feature

- Added 3 new metrics for monitoring async API calls in the scheduler when the `SchedulerAsyncAPICalls` feature gate was enabled:
    - `scheduler_async_api_call_execution_total`: tracks executed API calls by call type and result (success/error)
    - `scheduler_async_api_call_duration_seconds`: histogram of API call execution duration by call type and result

      sink.writeByte(0)
      sink.flush()
    }.also { expected ->
      assertThat(expected.message).isEqualTo("stream finished")
    }
    assertFailsWith<IOException> {
      stream.source.read(Buffer(), 1)
    }.also { expected ->
      assertThat(expected.message).isEqualTo("stream was reset: CANCEL")
    }

    // Verify the peer received what was expected.
    val synStream = peer.takeFrame()

- For volumes that allow attaches across multiple nodes, attach and detach operations across different nodes are now executed in parallel. ([#89239](https://github.com/kubernetes/kubernetes/pull/89239), [@verult](https://github.com/verult)) [SIG Apps, Node and Storage]

- For volumes that allow attaches across multiple nodes, attach and detach operations across different nodes are now executed in parallel. ([#88678](https://github.com/kubernetes/kubernetes/pull/88678), [@verult](https://github.com/verult)) [SIG Storage]

            final ActionType<Response> action, final Request request) {
        return client.execute(action, request);
    }

    /**
     * Executes an action asynchronously with a callback.
     *
     * @param <Request>  the request type
     * @param <Response> the response type
     * @param action     the action to execute

- For volumes that allow attaches across multiple nodes, attach and detach operations across different nodes are now executed in parallel. ([#89241](https://github.com/kubernetes/kubernetes/pull/89241), [@verult](https://github.com/verult)) [SIG Apps, Node and Storage]

- Kubeadm will cleanup the stale data on best effort basis. Stale data will be removed when each reset phase are executed, default etcd data directory will be cleanup when the `remove-etcd-member` phase are executed. ([#110972](https://github.com/kubernetes/kubernetes/pull/110972), [@chendave](https://github.com/chendave)) [SIG Cluster Lifecycle]

This was designed this way mainly to allow using the same objects "yielded" by dependencies inside of background tasks, because the exit code would be executed after the background tasks were finished.