- Improved memory usage of `kube-scheduler` by dropping the `.metadata.managedFields` field that `kube-scheduler` doesn't require. ([#119556](https://github.com/kubernetes/kubernetes/pull/119556), [@linxiulei](https://github.com/linxiulei))

  // * While dataSource only allows two specific types of objects, dataSourceRef
  //   allows any non-core object, as well as PersistentVolumeClaim objects.
  // * While dataSource ignores disallowed values (dropping them), dataSourceRef
  //   preserves all values, and generates an error if a disallowed value is
  //   specified.
  // * While dataSource only allows local objects, dataSourceRef allows objects

- Commands like `kubectl apply` now return errors if schema-invalid annotations are specified, rather than silently dropping the entire annotations section. ([#83552](https://github.com/kubernetes/kubernetes/pull/83552), [@liggitt](https://github.com/liggitt))

  - warn - perform server-side validation and warn on any invalid fields (but ultimately let the request succeed by dropping any invalid fields from the object). If validation is not available on the server, perform no validation.
  - false/ignore - perform no validation, silently dropping invalid fields from the object. ([#108350](https://github.com/kubernetes/kubernetes/pull/108350), [@kevindelgado](https://github.com/kevindelgado))

shia

// shiksha : 2013-11-14 Identity Digital Limited
shiksha

// shoes : 2013-10-02 Binky Moon, LLC
shoes

// shop : 2016-04-08 GMO Registry, Inc.
shop

// shopping : 2016-03-31 Binky Moon, LLC
shopping

// shouji : 2015-01-08 Beijing Qihu Keji Co., Ltd.
shouji

// show : 2015-03-05 Binky Moon, LLC
show

// showtime : 2015-08-06 CBS Domains Inc.
showtime

* Implement graceful shutdown of the kube-apiserver by waiting for open connections to finish before exiting. Moreover, the audit backend will stop dropping events on shutdown. ([#53695](https://github.com/kubernetes/kubernetes/pull/53695), [@hzxuzhonghu](https://github.com/hzxuzhonghu))

shitara.aichi.jp shiwa.iwate.jp shizukuishi.iwate.jp shizuoka.jp shizuoka.shizuoka.jp shobara.hiroshima.jp shoes shonai.fukuoka.jp shonai.yamagata.jp shoo.okayama.jp shop shop.brendly.rs shop.ht shop.hu shop.pl shop.ro shop.th shoparena.pl shopitsite.com shopping shopselect.net shopware.store shouji show show.aero showa.fukushima.jp showa.gunma.jp showa.yamanashi.jp showtime shunan.yamaguchi.jp shw.io si si.eu.org si.it sibenik.museum sic.it sicilia.it sicily.it siellak.no siena.it sigdal.no siiites.com siljan.no...

- Improved memory usage of kube-apiserver by dropping`.metadata.managedFields` field that self-requested informers of kube-apiserver didn't need. ([#124667](https://github.com/kubernetes/kubernetes/pull/124667), [@linxiulei](https://github.com/linxiulei)) [SIG API Machinery]

- Fixed a race condition in `kube-proxy` when using LocalModeNodeCIDR, to avoid dropping Services traffic if the object node is recreated when `kube-proxy` is starting. ([#118499](https://github.com/kubernetes/kubernetes/pull/118499), [@aojea](https://github.com/aojea))

## Changelog since v1.7.5

### Other notable changes

* [fluentd-gcp addon] Fluentd will trim lines exceeding 100KB instead of dropping them. ([#52289](https://github.com/kubernetes/kubernetes/pull/52289), [@crassirostris](https://github.com/crassirostris))