ctrl.scheduleOperation(logger, opName, func() error {
			_, err := ctrl.deleteVolumeOperation(ctx, volume)
			if err != nil {
				// only report error count to "volume_operation_total_errors"
				// latency reporting will happen when the volume get finally
				// deleted and a volume deleted event is captured
				metrics.RecordMetric(volume.Name, &ctrl.operationTimestamps, err)
			}
			return err
		})

	default:

 * <a href="http://www.unicode.org/glossary/#supplementary_code_point">supplementary Unicode code
 * points</a> in the range {@code 0x10000} to {@code 0x10FFFF} which includes the majority of
 * assigned characters, including important CJK characters and emoji.
 *
 * <p>Supplementary characters are <a
 * href="https://docs.oracle.com/javase/8/docs/api/java/lang/Character.html#supplementary">encoded

					errCh <- err
					utilruntime.HandleError(err)
				}
			}
		}(i)
	}
	deleteWait.Wait()

	// collect errors if any for proper reporting/retry logic in the controller
	errors := []error{}
	close(errCh)
	for err := range errCh {
		errors = append(errors, err)
	}
	return utilerrors.NewAggregate(errors)
}

// processing the graph per root frame at a time and guarantees that when a root
// frame is being processed, nodes in the downstream frames have not yet been
// processed.  This property is important because we need to process an entire
// frame to know whether the optimistic mode converges or not.  In other words,
// nodes in the downstream frames shall not be populated until all of its

   * using {@link Collections#list}.
   *
   * <p><b>Java 9 users:</b> use {@code enumeration.asIterator()} instead, unless it is important to
   * return an {@code UnmodifiableIterator} instead of a plain {@code Iterator}.
   */
  public static <T extends @Nullable Object> UnmodifiableIterator<T> forEnumeration(
      Enumeration<T> enumeration) {

 * <a href="http://www.unicode.org/glossary/#supplementary_code_point">supplementary Unicode code
 * points</a> in the range {@code 0x10000} to {@code 0x10FFFF} which includes the majority of
 * assigned characters, including important CJK characters and emoji.
 *
 * <p>Supplementary characters are <a
 * href="https://docs.oracle.com/javase/8/docs/api/java/lang/Character.html#supplementary">encoded

   * using {@link Collections#list}.
   *
   * <p><b>Java 9 users:</b> use {@code enumeration.asIterator()} instead, unless it is important to
   * return an {@code UnmodifiableIterator} instead of a plain {@code Iterator}.
   */
  public static <T extends @Nullable Object> UnmodifiableIterator<T> forEnumeration(
      Enumeration<T> enumeration) {

// Cacher implements storage.Interface (although most of the calls are just
// delegated to the underlying storage).
type Cacher struct {
	// HighWaterMarks for performance debugging.
	// Important: Since HighWaterMark is using sync/atomic, it has to be at the top of the struct due to a bug on 32-bit platforms
	// See: https://golang.org/pkg/sync/atomic/ for more information
	incomingHWM storage.HighWaterMark

        }
        assertConfigCacheDiscarded()
        where:
        terse << [true, false]
    }

    def "doesn't report failures when exporting keys"() {
        createMetadataFile {
            noMetadataVerification()
            keyServer(keyServerFixture.uri)
            verifySignatures()
            addTrustedKey("org:foo:1.0", validPublicKeyHexString)

    // to +/-inf at every integer x < 0, and this is controlled by the
    // sin(pi * x) term.  The slope is large, so precision is particularly
    // important.
    //
    // Because abs(sin(pi * x)) has period 1, we can equivalently use
    // abs(sin(pi * frac(x))), where frac(x) is the fractional part of x.  This