- Implemented full support for contextual logging in  `client-go/rest`. `BackoffManagerWithContext` was used instead of  `BackoffManager` to ensure that the caller could interrupt the sleep. ([#127709](https://github.com/kubernetes/kubernetes/pull/127709), [@pohly](https://github.com/pohly)) [SIG API Machinery, Architecture, Auth, Cloud Provider, Instrumentation, Network and Node]

- Kube-controller-manager: the dynamic resource controller steps in when a pod got created such that the scheduler ignores it (i.e. spec.nodeName is set) and then takes care of triggering delayed resource claim allocation and/or reserving a claim for the pod. ([#118209](https://github.com/kubernetes/kubernetes/pull/118209),...

  is removed in `v1.29`. Migrated `kube-scheduler` configuration files to `kubescheduler.config.k8s.io/v1`.' ([#119994](https://github.com/kubernetes/kubernetes/pull/119994), [@SataQiu](https://github.com/SataQiu))
- A new sleep action for the `PreStop` lifecycle hook was added, allowing containers to pause for a specified duration before termination. ([#119026](https://github.com/kubernetes/kubernetes/pull/119026), [@AxeZhan](https://github.com/AxeZhan))

- A new metric `lifecycle_handler_sleep_terminated_total` is added to record how many times LifecycleHandler sleep got unexpectedly terminated. ([#122456](https://github.com/kubernetes/kubernetes/pull/122456), [@AxeZhan](https://github.com/AxeZhan))

When the function terminates, its goroutine also terminates.
If the function has any return values, they are discarded when the
function completes.
</p>

<pre>
go Server()
go func(ch chan&lt;- bool) { for { sleep(10); ch &lt;- true }} (c)
</pre>


<h3 id="Select_statements">Select statements</h3>

<p>
A "select" statement chooses which of a set of possible
<a href="#Send_statements">send</a> or

- Allows PreStop lifecycle handler's sleep action to have a zero value ([#127094](https://github.com/kubernetes/kubernetes/pull/127094), [@sreeram-venkitesh](https://github.com/sreeram-venkitesh)) [SIG Apps, Node and Testing]

* Corrected a mistake in the documentation for wait.PollImmediate(...) ([#65026](https://github.com/kubernetes/kubernetes/pull/65026), [@spew](https://github.com/spew))
* Split 'scheduling_latency_seconds' metric into finer steps (predicate, priority, premption) ([#65306](https://github.com/kubernetes/kubernetes/pull/65306), [@shyamjvs](https://github.com/shyamjvs))

- Fixes a bug that when there is a "connection refused" error, the reflector's ListAndWatch func will return directly but what expected is that sleep 1 second and rewatch since the specified resourceVersion.
  ([#81634](https://github.com/kubernetes/kubernetes/pull/81634), [@likakuli](https://github.com/likakuli))

* Fix shebangs in charm actions to use python3 ([#42058](https://github.com/kubernetes/kubernetes/pull/42058), [@Cynerva](https://github.com/Cynerva))
* K8s master charm now properly keeps distributed master files in sync for an HA control plane. ([#41351](https://github.com/kubernetes/kubernetes/pull/41351), [@chuckbutler](https://github.com/chuckbutler))

- If a pod has a running instance, the stats of its previously terminated instances will not show up in the kubelet summary stats any more for CRI runtimes such as containerd and cri-o. This keeps the behavior consistent with Docker integration, and fixes an issue that some container Prometheus metrics don't work when there are summary stats for multiple instances of the same pod. ([#77426](https://github.com/kubernetes/kubernetes/pull/77426),...