// All data should have been read.
		_, err := r.ReadByte()
		if err != io.EOF {
			t.Errorf("#%d: got error %v; want EOF", rno, err)
		}
	}
}

// Test that UnreadRune fails if the preceding operation was not a ReadRune.
func TestUnreadRuneError(t *testing.T) {
	buf := make([]byte, 3) // All runes in this test are 3 bytes long
	r := NewReader(&StringReader{data: []string{"日本語日本語日本語"}})
	if r.UnreadRune() == nil {

    assertThat(cache["a"]).isNull()
  }

  /**
   * We had a long-lived bug where [DiskLruCache.trimToSize] could infinite loop if entries
   * being edited required deletion for the operation to complete.
   */
  @ParameterizedTest
  @ArgumentsSource(FileSystemParamProvider::class)
  fun trimToSizeWithActiveEdit(parameters: Pair<FileSystem, Boolean>) {
    setUp(parameters.first, parameters.second)

		//
		// This is possible to be lock free because
		// - xl.meta for inlined objects has already read the data
		//   into memory, any mutation on xl.meta subsequently is
		//   inconsequential to the overall read operation.
		// - xl.meta metadata is still verified for quorum under lock()
		//   however writing the response doesn't need to serialize
		//   concurrent writers
		unlockOnDefer = true

### Other (Cleanup or Flake)

- Reduce event spam during a volume operation error. ([#89794](https://github.com/kubernetes/kubernetes/pull/89794), [@msau42](https://github.com/msau42)) [SIG Storage]


# v1.16.8

[Documentation](https://docs.k8s.io)

## Downloads for v1.16.8

	STPW	(R3, R4), -4(RSP)   // e3933f29
	STPW	(R3, R4), 11(RSP)   // fb2f009163130029
	STPW	(R3, R4), 1024(RSP) // fb03109163130029
	STPW	(R3, R4), x(SB)
	STPW	(R3, R4), x+8(SB)

// bit field operation
	BFI	$0, R1, $1, R2      // 220040b3
	BFIW	$0, R1, $1, R2      // 22000033
	SBFIZ	$0, R1, $1, R2      // 22004093
	SBFIZW	$0, R1, $1, R2      // 22000013
	UBFIZ	$0, R1, $1, R2      // 220040d3

- Kubeadm: supported updating certificate organization during `kubeadm certs renew` operation. ([#121841](https://github.com/kubernetes/kubernetes/pull/121841), [@SataQiu](https://github.com/SataQiu))

 - Remove storage metrics `storage_operation_errors_total`, since we already have `storage_operation_status_count`.And add new field `status` for `storage_operation_duration_seconds`, so that we can know about all status storage operation latency. ([#98332](https://github.com/kubernetes/kubernetes/pull/98332), [@JornShen](https://github.com/JornShen)) [SIG Instrumentation and Storage]

    with warnings.catch_warnings(record=True) as w:
        warnings.simplefilter("always")
        response = client.get("/openapi.json")
        assert issubclass(w[-1].category, UserWarning)
        assert "Duplicate Operation ID" in str(w[-1].message)
    assert response.json() == {
        "openapi": "3.1.0",
        "info": {"title": "FastAPI", "version": "0.1.0"},
        "paths": {
            "/override1": {

- For raw block CSI volumes on Kubernetes, kubelet was incorrectly calling CSI NodeStageVolume for every single "map" (i.e. raw block "mount") operation for a volume already attached to the node. This PR ensures it is only called once per volume per node. ([#112403](https://github.com/kubernetes/kubernetes/pull/112403), [@akankshakumari393](https://github.com/akankshakumari393)) [SIG Storage]

							Description:          getBucketRepLatencyMD(),
							HistogramBucketLabel: "range",
							Histogram:            stat.Latency.getUploadLatency(),
							VariableLabels:       map[string]string{"bucket": bucket, "operation": "upload", "targetArn": arn},
						})
						if c, ok := stat.Failed.ErrCounts["AccessDenied"]; ok {
							metrics = append(metrics, MetricV2{