- Introduced the `scheduling.k8s.io/v1alpha1` Workload API to express workload-level scheduling requirements and allow the kube-scheduler to act on them. ([#134564](https://github.com/kubernetes/kubernetes/pull/134564), [@macsko](https://github.com/macsko)) [SIG API Machinery, Apps, CLI, Etcd, Scheduling and Testing]

- Kube-scheduler now retries scheduling Pods rejected by the PodTopologySpread plugin when related...

  - Added user-owned fields in `ResourceClaim` to specify resource requirements against each device capacity.
  - Added scheduler-owned field in `ResourceClaim.Status` to specify how much device capacity is reserved for a specific request.

* Fix Heapster configuration and Metrics Server configuration to enable overriding default resource requirements. ([#56965](https://github.com/kubernetes/kubernetes/pull/56965), [@kawych](https://github.com/kawych))



# v1.9.0

### **Node Components**
#### Container Runtime Interface

- When dynamically provisioning Azure File volumes for a premium account, the requested size will be set to 100GB if the request is initially lower than this value to accommodate Azure File requirements. ([#99122](https://github.com/kubernetes/kubernetes/pull/99122), [@huffmanca](https://github.com/huffmanca)) [SIG Cloud Provider and Storage]

### Documentation

- Added an example of set-based requirements for the  `-l` / `--selector` command line option to `kubectl`. ([#129106](https://github.com/kubernetes/kubernetes/pull/129106), [@rotsix](https://github.com/rotsix))

* Fix Heapster configuration and Metrics Server configuration to enable overriding default resource requirements. ([#56965](https://github.com/kubernetes/kubernetes/pull/56965), [@kawych](https://github.com/kawych))

	<li>Round to the nearest representable constant if unable to
	    represent a floating-point or complex constant due to limits
	    on precision.</li>
</ul>

<p>
These requirements apply both to literal constants and to the result
of evaluating <a href="#Constant_expressions">constant
expressions</a>.
</p>


<h2 id="Variables">Variables</h2>

<p>

- Fixed CSI migration of Azure Disk in-tree StorageClasses with topology requirements in Azure regions that do not have availability zones. ([#109154](https://github.com/kubernetes/kubernetes/pull/109154), [@jsafrane](https://github.com/jsafrane))