- kubeadm: Added support for machine-readable output with `-o yaml` and `-o json` to the command `kubeadm certs check-expiration`. This change is introduced in a new API: ``` kind: CertificateExpirationInfo apiVersion: output.kubeadm.k8s.io/v1alpha3 ``` The existing non-structured formatting is preserved. The output API version v1alpha2 is now deprecated and will be removed in a future release. Please migrate to using v1alpha3.

- Kubeadm: Some text in the `kubeadm upgrade plan` output has changed. If you have scripts or other automation that parses this output, please review these changes and update your scripts to account for the new output. ([#98728](https://github.com/kubernetes/kubernetes/pull/98728), [@stmcginnis](https://github.com/stmcginnis)) [SIG Cluster Lifecycle]

			t.Fatalf("%+v: expected = %d, got: %d", testCase, testCase.expectedIndex, index)
		}
	}
}

// Test objectPartIndex(). generates a sample FileInfo data and asserts
// the output of objectPartIndex() with the expected value.
func TestObjectPartIndex(t *testing.T) {
	testCases := []struct {
		partNum       int
		expectedIndex int
	}{
		{2, 1},
		{1, 0},
		{5, 3},
		{4, 2},
		{7, 4},

             * to populate fields if the writeXxx operation needs this header data
             * for whatever reason. I copy over the uid here so it appears correct
             * in logging output. Logging of andx segments of messages inadvertantly
             * print header information because of the way toString always makes a
             * super.toString() call(see toString() at the end of all smbs classes).

<div class="termy">

```console
$ openssl rand -hex 32

09d25e094faa6ca2556c818166b7a9563b93f7099f6f0f4caa6cf63b88e8d3e7
```

</div>

And copy the output to the variable `SECRET_KEY` (don't use the one in the example).

Create a variable `ALGORITHM` with the algorithm used to sign the JWT token and set it to `"HS256"`.

Create a variable for the expiration of the token.

In case of a S3 multi-part operation each part is en/decrypted with the scheme shown in Figure 1. However, for each part a unique secret key is derived from the OEK and the part number using a PRF. So in case of multi-part not the OEK but the output of `PRF(OEK, part_id)` is used as secret key.

#### Cryptographic Primitives

    Iterable<List<Integer>> partitions = Iterables.partition(source, 2);
    Iterator<List<Integer>> iterator = partitions.iterator();
    // Even though the input list doesn't implement RandomAccess, the output
    // lists do.
    assertTrue(iterator.next() instanceof RandomAccess);
    assertTrue(iterator.next() instanceof RandomAccess);
  }

  public void testPaddedPartition_basic() {

* Show LASTSEEN, the sorting key, as the first column in `kubectl get event` output ([#27549](https://github.com/kubernetes/kubernetes/pull/27549), [@therc](https://github.com/therc))

"다른 무언가를 기다리는 것"은 일반적으로 비교적 "느린" (프로세서와 RAM 메모리 속도에 비해) <abbr title="Input and Output">I/O</abbr> 작업을 의미합니다. 예를 들면 다음의 것들을 기다리는 것입니다:

* 네트워크를 통해 클라이언트로부터 전송되는 데이터
* 네트워크를 통해 클라이언트가 수신할, 당신의 프로그램으로부터 전송되는 데이터
* 시스템이 읽고 프로그램에 전달할 디스크 내의 파일 내용
* 당신의 프로그램이 시스템에 전달하는, 디스크에 작성될 내용
* 원격 API 작업
* 완료될 데이터베이스 작업
* 결과를 반환하는 데이터베이스 쿼리
* 기타

수행 시간의 대부분이 <abbr title="Input and Output">I/O</abbr> 작업을 기다리는데에 소요되기 때문에, "I/O에 묶인" 작업이라고 불립니다.

		}
	}

	// test cases with inputs and expected result for HeadObject.
	testCases := []struct {
		bucketName string
		objectName string
		accessKey  string
		secretKey  string
		// expected output.
		expectedRespStatus int // expected response status body.
	}{
		// Test case - 1.
		// Fetching stat info of object and validating it.
		{
			bucketName:         bucketName,
			objectName:         objectName,