"chainable","emptyGet","raw","bulk","_key","rmsPrefix","rdashAlpha","fcamelCase","_all","letter","toUpperCase","camelCase","string","acceptData","owner","Data","uid","defineProperty","configurable","set","data","prop","hasData","dataPriv","dataUser","rbrace","rmultiDash","dataAttr","JSON","parse","removeData","_data","_removeData","attrs","dequeue","startLength","hooks","_queueHooks","unshift","stop","setter","clearQueue","tmp","count","defer","pnum","source","rcssNum","cssExpand","isAttached","...

  So, if you want to just keep the existing behavior, you can register `ClusterEventWithHint` with no `QueueingHintFn` in it. 
  But, registering appropriate `QueueingHintFn` is, of course, better from a scheduling performance perspective. ([#118551](https://github.com/kubernetes/kubernetes/pull/118551), [@sanposhiho](https://github.com/sanposhiho)) [SIG Node, Scheduling, Storage and Testing]

### Other (Cleanup or Flake)
 - base-images: Use debian-base:v2.1.0 (update to Debian Buster, includes CVE fixes)

### API Change

#### New API types/versions:
- A new IngressClass resource has been added to enable better Ingress configuration. ([#88509](https://github.com/kubernetes/kubernetes/pull/88509), [@robscott](https://github.com/robscott)) [SIG API Machinery, Apps, CLI, Network, Node and Testing]

            <li>{@code exists(path)}: Checks if a file matching the given glob pattern exists.</li>
            <li>{@code missing(path)}: Checks if a file matching the given glob pattern does not exist.</li>
            <li>{@code inrange(version, range)}: Checks if the given version is within the specified version range.</li>
            </ul>

* Change docker metrics to conform metrics guidelines and using histogram for better aggregation. ([#72323](https://github.com/kubernetes/kubernetes/pull/72323), [@danielqsj](https://github.com/danielqsj))
    * The following metrics are deprecated, and will be removed in a future release:

* Clean up the kube-proxy container image by removing unnecessary packages and files. ([#42090](https://github.com/kubernetes/kubernetes/pull/42090), [@timstclair](https://github.com/timstclair))
* Better compat with very old iptables (e.g. CentOS 6) ([#37594](https://github.com/kubernetes/kubernetes/pull/37594), [@thockin](https://github.com/thockin))

### Scheduler

### Other (Cleanup or Flake)

- Service session affinity timeout tests are no longer required for Kubernetes network plugin conformance due to variations in existing implementations. New conformance tests will be developed to better express conformance in future releases. ([#112806](https://github.com/kubernetes/kubernetes/pull/112806), [@dcbw](https://github.com/dcbw)) [SIG Architecture, Network and Testing]

## Dependencies

### Added

  you want to set the equivalent of any of the `--iptables-xxx` options.)
  
  As this code is still very new, it has not been heavily optimized yet;
  while it is expected to _eventually_ have better performance than the
  iptables backend, very little performance testing has been done so far. ([#121046](https://github.com/kubernetes/kubernetes/pull/121046), [@danwinship](https://github.com/danwinship))

- Introduce...