## Changelog since v1.19.2

## Changes by Kind

### Feature

- Kubernetes is now built using go1.15.2
  - build: Update to k/repo-infra@v0.1.1 (supports go1.15.2)
  - build: Use go-runner:buster-v2.0.1 (built using go1.15.1)
  - bazel: Replace --features with Starlark build settings flag
  - hack/lib/util.sh: some bash cleanups
    
    - switched one spot to use kube::logging

* **Deep Learning**: this is a sub-field of Machine Learning, so, the same applies. It's just that there is not a single spreadsheet of numbers to multiply, but a huge set of them, and in many cases, you use a special processor to build and / or use those models.

### Concurrency + Parallelism: Web + Machine Learning { #concurrency-parallelism-web-machine-learning }

- Kubectl: The deprecated `kubectl alpha debug` command is removed. Use `kubectl debug` instead. ([#98111](https://github.com/kubernetes/kubernetes/pull/98111), [@pandaamanda](https://github.com/pandaamanda)) [SIG CLI]

</p>

<p>
Any implementation can, upon detecting a data race,
report the race and halt execution of the program.
Implementations using ThreadSanitizer
(accessed with “<code>go</code> <code>build</code> <code>-race</code>”)
do exactly this.
</p>

<p>
A read of an array, struct, or complex number
may be implemented as a read of each individual sub-value

    public static final String LABELS_reload_doc_index_button = "{labels.reload_doc_index_button}";

    /** The key of the message: Rebuild Config Index */
    public static final String LABELS_rebuild_config_index = "{labels.rebuild_config_index}";

    /** The key of the message: Rebuild */
    public static final String LABELS_rebuild_config_index_button = "{labels.rebuild_config_index_button}";

pkg go/build, method (*Context) ImportDir(string, ImportMode) (*Package, error)
pkg go/build, method (*Context) SrcDirs() []string
pkg go/build, method (*NoGoError) Error() string
pkg go/build, method (*Package) IsCommand() bool
pkg go/build, type Context struct
pkg go/build, type Context struct, BuildTags []string
pkg go/build, type Context struct, CgoEnabled bool
pkg go/build, type Context struct, Compiler string

        supportedLanguages = fessConfig.getSupportedLanguagesAsArray();
        langItemsCache = CacheBuilder.newBuilder()
                .maximumSize(20)
                .expireAfterAccess(1, TimeUnit.HOURS)
                .build(new CacheLoader<String, List<Map<String, String>>>() {
                    @Override
                    public List<Map<String, String>> load(final String key) throws Exception {

            if (this.endDate == null) return;

            this.calculateChosenLabel();
        },

        renderCalendar: function(side) {

            //
            // Build the matrix of dates that will populate the calendar
            //

            var calendar = side == 'left' ? this.leftCalendar : this.rightCalendar;
            var month = calendar.month.month();

* Change references to gs://kubernetes-release/ci ([#28193](https://github.com/kubernetes/kubernetes/pull/28193), [@zmerlynn](https://github.com/zmerlynn))
* Build: Add KUBE_GCS_RELEASE_BUCKET_MIRROR option to push-ci-build.sh ([#28172](https://github.com/kubernetes/kubernetes/pull/28172), [@zmerlynn](https://github.com/zmerlynn))

- Reduces the needs of the setcap build image for kube-apiserver by no longer requiring that image to contain a shell (`sh` or `dash` or `bash`). ([#136633](https://github.com/kubernetes/kubernetes/pull/136633), [@addyess](https://github.com/addyess)) [SIG Release]