for background information.

### Scheduling

  - Opaque Integer Resources (OIRs) are deprecated and will be removed in
    version 1.9. Extended Resources (ERs) are a drop-in replacement for OIRs. You can use
    any domain name prefix outside of the `kubernetes.io/` domain instead of the
    `pod.alpha.kubernetes.io/opaque-int-resource-` prefix.

## Changelog since v1.13.7

### Other notable changes

* Fix possible fd leak and closing of dirs in doSafeMakeDir  ([#79534](https://github.com/kubernetes/kubernetes/pull/79534), [@odinuge](https://github.com/odinuge))

- Fixed attachment of AWS volumes that have just been detached. ([#83567](https://github.com/kubernetes/kubernetes/pull/83567), [@jsafrane](https://github.com/jsafrane))
- Fix possible fd leak and closing of dirs when using openstack ([#82873](https://github.com/kubernetes/kubernetes/pull/82873), [@odinuge](https://github.com/odinuge))

* Fix possible fd leak and closing of dirs when using openstack ([#82873](https://github.com/kubernetes/kubernetes/pull/82873), [@odinuge](https://github.com/odinuge))

      * Added exported env vars to kubectl plugins so that plugin developers have access to global flags, namespace, the plugin descriptor and the full path to the caller binary.

  * Enhancement

*   `conversion-gen` is now usable in a context without a vendored k8s.io/kubernetes. The Kubernetes core API is removed from `default extra-peer-dirs`. ([#54394](https://github.com/kubernetes/kubernetes/pull/54394),[ @sttts](https://github.com/sttts))

- Fixed sample-cli-plugin help text to be consistent and always use `kubectl ns`. ([#125641](https://github.com/kubernetes/kubernetes/pull/125641), [@nirs](https://github.com/nirs))

}

// ResourceFieldSelector represents container resources (cpu, memory) and their output format
// +structType=atomic
message ResourceFieldSelector {
  // Container name: required for volumes, optional for env vars
  // +optional
  optional string containerName = 1;

  // Required: resource to select
  optional string resource = 2;

  // Specifies the output format of the exposed resources, defaults to "1"

* Fix possible fd leak and closing of dirs in doSafeMakeDir  ([#79534](https://github.com/kubernetes/kubernetes/pull/79534), [@odinuge](https://github.com/odinuge))

- Resolved an issue that caused winkernel proxier to treat stale VIPs as valid. ([#113521](https://github.com/kubernetes/kubernetes/pull/113521), [@daschott](https://github.com/daschott))