Service Level Indicators (SLIs) and Service Level Objectives (SLOs) for the system.
Here's the release [scalability validation report].

[SIG Scalability]: https://github.com/kubernetes/community/tree/master/sig-scalability
[scalability validation report]: https://github.com/kubernetes/sig-release/blob/master/releases/release-1.8/scalability_validation_report.md

### SIG Scheduling

Joe Tsai <******@****.***> 1503557073 -0700

    * Fix for kube-dns returns NXDOMAIN when not yet synced with apiserver.
    * Don't generate empty record for externalName service.
    * Add validation for upstreamNameserver port.
    * Update go version to 1.9.3.

Joe Tsai <******@****.***> 1503699341 -0700

    * - Fix for kube-dns returns NXDOMAIN when not yet synced with apiserver.
    * - Don't generate empty record for externalName service.
    * - Add validation for upstreamNameserver port.
    * - Update go version to 1.9.3.

  private final AtomicReference<Throwable> threadFailure = new AtomicReference<>(null);

  /**
   * Records an exception so that it can be rethrown later in the test harness thread, triggering a
   * test case failure. Only the first failure is recorded; subsequent calls to this method from
   * within the same test have no effect.
   */
  final void threadRecordFailure(Throwable t) {

		expectedRespStatus int
		lifecycleResponse  []byte
		errorResponse      APIErrorResponse
		shouldPass         bool
	},
) {
	for i, testCase := range testCases {
		// initialize httptest Recorder, this records any mutations to response writer inside the handler.
		rec := httptest.NewRecorder()
		// construct HTTP request
		req, err := newTestSignedRequestV4(testCase.method, getBucketLifecycleURL("", testCase.bucketName),

				Code:     "InvalidAccessKeyId",
				Message:  "The Access Key Id you provided does not exist in our records.",
			},
			shouldPass: false,
		},
	}

	for i, testCase := range testCases {
		if i != 1 {
			continue
		}
		// initialize httptest Recorder, this records any mutations to response writer inside the handler.
		rec := httptest.NewRecorder()

 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package okhttp3

import java.io.IOException
import java.util.concurrent.TimeUnit

/**
 * Records received HTTP responses so they can be later retrieved by tests.
 */
class RecordingCallback : Callback {
  private val responses = mutableListOf<RecordedResponse>()

  @Synchronized
  override fun onFailure(

	totalRequests := 0
	for _, v := range finalStats.TotalS3Requests.APIStats {
		totalRequests += v
	}
	if totalRequests == 0 {
		t.Error("Expected some total requests to be recorded, but got zero")
	}
	t.Logf("Total requests recorded: %d", totalRequests)
	t.Logf("Race condition test passed - no races detected")
}

// TestHTTPAPIStatsRaceCondition tests concurrent access to HTTPAPIStats specifically.