- Scheduler no longer runs the plugin's `Filter` method when its `PreFilter` method returned a Skip status.
  In other words, your `PreFilter`/`Filter` plugin can return a Skip status in `PreFilter` if the plugin does nothing in Filter for that Pod.
  Scheduler skips `NodeAffinity` Filter plugin when `NodeAffinity` Filter plugin has nothing to do with a Pod.

rejected via `UnschedulableAndUnresolvable`. Consequently, these nodes are excluded from the candidates for the preemption process. Additionally, this update corrects how the scheduling framework handles the Unschedulable status from PreFilter. Previously, if PreFilter returned `Unschedulable`, it could lead to an unexpected abortion in the preemption process, which shouldn't occur in the default scheduler but might occur in schedulers with custom plugins. ([#119779](https://github.com/kubernetes/...

- Fixed a `1.27` scheduling regression that `PostFilter` plugin may not function if previous `PreFilter` plugins return `Skip`. ([#119769](https://github.com/kubernetes/kubernetes/pull/119769), [@Huang-Wei](https://github.com/Huang-Wei))

- Fixed a 1.26 regression scheduling bug by ensuring that preemption is skipped when a PreFilter plugin returns `UnschedulableAndUnresolvable` ([#119951](https://github.com/kubernetes/kubernetes/pull/119951), [@sanposhiho](https://github.com/sanposhiho)) [SIG Scheduling]

- Fixed a 1.26 regression scheduling bug by ensuring that preemption is skipped when a PreFilter plugin returns `UnschedulableAndUnresolvable` ([#119953](https://github.com/kubernetes/kubernetes/pull/119953), [@sanposhiho](https://github.com/sanposhiho)) [SIG Scheduling]