The CustomCFSQuotaPeriod alpha feature enables node administrators to change the default period used to enforce CFS quota on a node.  This can improve performance for some workloads that experience latency while using CFS quota with the default measurement period.  Finally, the SIG continues to focus on improving reliability by fixing bugs while working out design and implementation of future features.

- Fixed a potential deadlock in the resource quota controller. Enabled recording partial usage info for quota objects specifying multiple resources, when only some of the resources' usage can be determined. ([#74747](https://github.com/kubernetes/kubernetes/pull/74747), [@liggitt](https://github.com/liggitt))

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* Azure cloudprovider: Reduce the polling delay for all azure clients to 5 seconds. This should speed up some operations at the cost of some additional quota. ([#43699](https://github.com/kubernetes/kubernetes/pull/43699), [@colemickens](https://github.com/colemickens))

- The `podAffinity`, `NamespaceSelector` and the associated `CrossNamespaceAffinity` quota scope features graduate to Beta and they are now enabled by default. ([#101496](https://github.com/kubernetes/kubernetes/pull/101496), [@ahg-g](https://github.com/ahg-g))

## Changelog since v1.17.16

## Changes by Kind

### Bug or Regression

- Fix counting error in service/nodeport/loadbalancer quota check ([#97830](https://github.com/kubernetes/kubernetes/pull/97830), [@pacoxu](https://github.com/pacoxu)) [SIG API Machinery and Network]

- Kubelet: Fix fs quota monitoring on volumes ([#116793](https://github.com/kubernetes/kubernetes/pull/116793), [@pacoxu](https://github.com/pacoxu)) [SIG Storage]

## Dependencies

### Added
_Nothing has changed._

### Changed

a";break;case"d":return s?"p\xe4iv\xe4n":"p\xe4iv\xe4";case"dd":d=s?"p\xe4iv\xe4n":"p\xe4iv\xe4\xe4";break;case"M":return s?"kuukauden":"kuukausi";case"MM":d=s?"kuukauden":"kuukautta";break;case"y":return s?"vuoden":"vuosi";case"yy":d=s?"vuoden":"vuotta";break}return r=s,d=((n=e)<10?r?_n[n]:dn[n]:n)+" "+d}M.defineLocale("fi",{months:"tammikuu_helmikuu_maaliskuu_huhtikuu_toukokuu_kes\xe4kuu_hein\xe4kuu_elokuu_syyskuu_lokakuu_marraskuu_joulukuu".split("_"),monthsShort:"tammi_helmi_maalis_huhti_tou...

- Fix: Route controller should update routes with NodeIP changed ([#116360](https://github.com/kubernetes/kubernetes/pull/116360), [@lzhecheng](https://github.com/lzhecheng)) [SIG Cloud Provider]
- Kubelet: Fix fs quota monitoring on volumes ([#116795](https://github.com/kubernetes/kubernetes/pull/116795), [@pacoxu](https://github.com/pacoxu)) [SIG Storage]

### Other (Cleanup or Flake)

    * The `admissionregistration.k8s.io/v1beta1` versions of `MutatingWebhookConfiguration` and `ValidatingWebhookConfiguration` are deprecated and will no longer be served in v1.19.
* The garbage collector and generic object quota controller have been updated to use the metadata client which improves memory ([#78742](https://github.com/kubernetes/kubernetes/pull/78742), [@smarterclayton](https://github.com/smarterclayton))