- `kubectl diff` now returns 1 only on diff finding changes, and >1 on kubectl errors. The "exit status code 1" message has also been muted. ([#87437](https://github.com/kubernetes/kubernetes/pull/87437), [@apelisse](https://github.com/apelisse)) [SIG CLI and Testing]

## Dependencies

    * Add validation for upstreamNameserver port.
    * Update go version to 1.9.3.
* CRI: define the mount behavior when host path does not exist: runtime should report error if the host path doesn't exist ([#61460](https://github.com/kubernetes/kubernetes/pull/61460), [@feiskyer](https://github.com/feiskyer))

* `kubectl edit` now edits objects exactly as they were retrieved from the API. This allows using `kubectl edit` with third-party resources and extension API servers. Because client-side conversion is no longer done, the `--output-version` option is deprecated for `kubectl edit`. To edit using a particular API version, fully-qualify the resource, version, and group used to fetch the object (for example,...

- EndpointSlice controller is now less likely to emit FailedToUpdateEndpointSlices events. ([#100114](https://github.com/kubernetes/kubernetes/pull/100114), [@robscott](https://github.com/robscott)) [SIG Apps and Network]

* Add CSI Migration Shim for VerifyVolumesAreAttached and BulkVolumeVerify ([#80443](https://github.com/kubernetes/kubernetes/pull/80443), [@davidz627](https://github.com/davidz627))

- The `kubectl patch` command no longer exits with exit code 1 when a redundant patch results in a no-op ([#66725](https://github.com/kubernetes/kubernetes/pull/66725), [@juanvallejo](https://github.com/juanvallejo))

- Increased log level to 2 for IPVS graceful termination ([#78395](https://github.com/kubernetes/kubernetes/pull/78395), [@andrewsykim](https://github.com/andrewsykim))
- kube-proxy: os exit when CleanupAndExit is set to true ([#76732](https://github.com/kubernetes/kubernetes/pull/76732), [@JieJhih](https://github.com/JieJhih))

    key = "abcdefghijklmnopqrstuvwxyz_0123456789"
    cache.edit(key)!!.abort()
    // Contains dash.
    key = "-20384573948576"
    cache.edit(key)!!.abort()
  }

  @ParameterizedTest
  @ArgumentsSource(FileSystemParamProvider::class)
  fun writeAndReadEntry(parameters: Pair<FileSystem, Boolean>) {
    setUp(parameters.first, parameters.second)
    val creator = cache.edit("k1")!!
    creator.setString(0, "ABC")

HSPLokio/AsyncTimeout$source$1;->close()V
HSPLokio/AsyncTimeout$source$1;->read(Lokio/Buffer;J)J
HSPLokio/AsyncTimeout;-><clinit>()V
HSPLokio/AsyncTimeout;-><init>()V
HSPLokio/AsyncTimeout;->enter()V
HSPLokio/AsyncTimeout;->exit()Z
HSPLokio/Buffer;-><init>()V
HSPLokio/Buffer;->exhausted()Z
HSPLokio/Buffer;->getByte(J)B
HSPLokio/Buffer;->indexOfElement(Lokio/ByteString;)J
HSPLokio/Buffer;->rangeEquals(JLokio/ByteString;)Z

    /**
     * Returns an editor for this snapshot's entry, or null if either the entry has changed since
     * this snapshot was created or if another edit is in progress.
     */
    @Throws(IOException::class)
    fun edit(): Editor? = this@DiskLruCache.edit(key, sequenceNumber)

    /** Returns the unbuffered stream with the value for [index]. */
    fun getSource(index: Int): Source = sources[index]