* Time for attach/detach retry operations has been decreased from 10-12s to 2-6s ([#56974](https://github.com/kubernetes/kubernetes/pull/56974), [@gnufied](https://github.com/gnufied))

### Auth

* Contexts must be named in kubeconfigs. ([#56769](https://github.com/kubernetes/kubernetes/pull/56769), [@dixudx](https://github.com/dixudx))

- Add `csi_operations_seconds` metric on kubelet that exposes CSI operations duration and status for node CSI operations. ([#98979](https://github.com/kubernetes/kubernetes/pull/98979), [@Jiawei0227](https://github.com/Jiawei0227)) [SIG Instrumentation and Storage]

  The incorrect cost was evident when the result of a function was used in subsequent operations. ([#119809](https://github.com/kubernetes/kubernetes/pull/119809), [@jpbetz](https://github.com/jpbetz)) [SIG API Machinery, Auth and Cloud Provider]

## Changelog since v1.9.1

### Other notable changes

* Fixes authentication problem faced during various vSphere operations. ([#57978](https://github.com/kubernetes/kubernetes/pull/57978), [@prashima](https://github.com/prashima))

      - `docker_operations` -> `docker_operations_total`
      - `docker_operations_latency_microseconds` -> `docker_operations_duration_seconds`
      - `docker_operations_errors` -> `docker_operations_errors_total`
      - `docker_operations_timeout` -> `docker_operations_timeout_total`
      - `network_plugin_operations_latency_microseconds` -> `network_plugin_operations_duration_seconds`

- For volumes that allow attaches across multiple nodes, attach and detach operations across different nodes are now executed in parallel. ([#89239](https://github.com/kubernetes/kubernetes/pull/89239), [@verult](https://github.com/verult)) [SIG Apps, Node and Storage]

* Use separate client for leader election in scheduler to avoid starving leader election by regular scheduler operations. ([#53793](https://github.com/kubernetes/kubernetes/pull/53793), [@wojtek-t](https://github.com/wojtek-t))

* The apiserver, including both the kube-apiserver and apiservers built with the generic apiserver library, will now return 413 RequestEntityTooLarge error if a json patch contains more than 10,000 operations. ([#74000](https://github.com/kubernetes/kubernetes/pull/74000), [@caesarxuchao](https://github.com/caesarxuchao))

  The incorrect cost was evident when the result of a function was used in subsequent operations. ([#119807](https://github.com/kubernetes/kubernetes/pull/119807), [@jpbetz](https://github.com/jpbetz)) [SIG API Machinery, Auth and Cloud Provider]

- List operations against the API now return internal server errors instead of partially complete lists when a value cannot be transformed from storage. The updated behavior is consistent with all other operations that require transforming data from storage such as watch and get. ([#69399](https://github.com/kubernetes/kubernetes/pull/69399), [@mikedanese](h...