Previously, when unschedulable Pods are updated, the scheduler always put Pods back to activeQ/backoffQ. But, actually not all updates to Pods make Pods schedulable, especially considering many scheduling constraints nowadays are immutable.

- Append the image pull error for the pods `status.containerStatuses[*].state.waiting.message` when
  in image pull back-off (`reason` is `ImagePullBackOff`) instead of the generic `Back-off pulling image…` message. ([#127918](https://github.com/kubernetes/kubernetes/pull/127918), [@saschagrunert](https://github.com/saschagrunert)) [SIG Node and Testing]

    - [CSI Service Account Token](#csi-service-account-token)
    - [CSI Health Monitoring](#csi-health-monitoring)
  - [Known Issues](#known-issues)
    - [<code>TopologyAwareHints</code> feature falls back to default behavior](#topologyawarehints-feature-falls-back-to-default-behavior)
  - [Urgent Upgrade Notes](#urgent-upgrade-notes)
    - [(No, really, you MUST read this before you upgrade)](#no-really-you-must-read-this-before-you-upgrade)

func TrimSpace(s []byte) []byte {
	// Fast path for ASCII: look for the first ASCII non-space byte.
	for lo, c := range s {
		if c >= utf8.RuneSelf {
			// If we run into a non-ASCII byte, fall back to the
			// slower unicode-aware method on the remaining bytes.
			return TrimFunc(s[lo:], unicode.IsSpace)
		}
		if asciiSpace[c] != 0 {
			continue
		}
		s = s[lo:]

			}
		}
	}
}

/*
var ErrDone = errors.New("done for now")

var ErrRemoteRestart = errors.New("remote restarted")


// Stateless connects to the remote handler and return all packets sent back.
// If the remote is restarted will return ErrRemoteRestart.
// If nil will be returned remote call sent EOF or ErrDone is returned by the callback.
// If ErrDone is returned on cb nil will be returned.

			return false
		}

		// Finally, if there is no parent policy, check if a policy claim is
		// present in the session token.
		if len(policies) == 0 {
			// If there is no parent policy mapping, we fall back to
			// using policy claim from JWT.
			policySet, ok := args.GetPolicies(iamPolicyClaimNameOpenID())
			if !ok {
				// When claims are set, it should have a policy claim field.
				return false
			}

## WARNING: etcd backup strongly recommended

Before updating to 1.6, you are strongly recommended to back up your etcd data.
Please consult the installation procedure you are using (kargo, kops, kube-up,
kube-aws, kubeadm etc) for specific advice.

1.6 encourages etcd3, and switching from etcd2 to etcd3 involves a full

### Other (Cleanup or Flake)

- Reverts the EventedPLEG feature (beta, but disabled by default) back to alpha for a known issue ([#122718](https://github.com/kubernetes/kubernetes/pull/122718), [@pacoxu](https://github.com/pacoxu)) [SIG Node]

## Dependencies

### Added
_Nothing has changed._

   *       {@link #withoutCloser(AsyncFunction)}
   * </ul>
   *
   * <p>Example usage:
   *
   * {@snippet :
   * // Fall back to a secondary input stream in case of IOException.
   * ClosingFuture<InputStream> inputFuture =
   *     firstInputFuture.catchingAsync(

	defer store.unlock()

	// Handle policy mapping removal.
	if policy == "" {
		if store.getUsersSysType() == LDAPUsersSysType {
			// Add a fallback removal towards previous content that may come back
			// as a ghost user due to lack of delete, this change occurred
			// introduced in PR #11840
			store.deleteMappedPolicy(ctx, name, regUser, false)
		}
		err := store.deleteMappedPolicy(ctx, name, userType, isGroup)