* Google Docs is not a "code-oriented" tool, like asciidoc can be
* Review in Google Docs is not as simple as a PR code review in GitHub

## Decision

The *Build Tool Team* has decided to use Architectural Decision Records (aka ADR) to track decisions we want to follow.

The main logic with ADRs is to describe (architectural) decisions made:

- Fixed ability for admin/edit/view users to see controller revisions, needed for kubectl rollout commands ([#70699](https://github.com/kubernetes/kubernetes/pull/70699), [@liggitt](https://github.com/liggitt))
- `kubectl rollout undo` now returns errors when attempting to rollback a deployment to a non-existent revision ([#70039](https://github.com/kubernetes/kubernetes/pull/70039), [@liggitt](https://github.com/liggitt))

- Fixed bug in `kubectl rollout history` where only the latest revision was displayed when a specific revision was requested and an output format was specified. ([#111093](https://github.com/kubernetes/kubernetes/pull/111093), [@brianpursley](https://github.com/brianpursley))

- Fix a bug that orphan revision cannot be adopted and statefulset cannot be synced ([#86801](https://github.com/kubernetes/kubernetes/pull/86801), [@likakuli](https://github.com/likakuli)) [SIG Apps]

*   Fixes a division by 0 in `Conv2DBackpropInput`
    ([CVE-2021-29525](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-29525))
*   Fixes a division by 0 in `Conv2D`
    ([CVE-2021-29526](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-29526))
*   Fixes a division by 0 in `QuantizedConv2D`
    ([CVE-2021-29527](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-29527))
*   Fixes a division by 0 in `QuantizedMul`

import org.checkerframework.checker.nullness.qual.Nullable;

/**
 * The concurrent hash map implementation built by {@link CacheBuilder}.
 *
 * <p>This implementation is heavily derived from revision 1.96 of <a
 * href="http://tinyurl.com/ConcurrentHashMap">ConcurrentHashMap.java</a>.
 *
 * @author Charles Fry
 * @author Bob Lee ({@code com.google.common.collect.MapMaker})
 * @author Doug Lea ({@code ConcurrentHashMap})

- Clean ReplicaSet by revision instead of creation timestamp in deployment controller ([#97407](https://github.com/kubernetes/kubernetes/pull/97407), [@waynepeking348](https://github.com/waynepeking348)) [SIG Apps]

## Architecture Standards

**Experimental!**

We'd like to capture our architectural decisions about the build tool as [Architectural Decision Records (ADRs)](https://adr.github.io/).
For now we just have this global repository of ADRs.
If we see fit, we can break these out to per-platform ones, or keep a hybrid approach to having global and platform-specific ADSs.

Our aim is to keep the process lightweight and approachable.

	return &Tokenizer{
		s:    &s,
		base: src.NewFileBase(name, objabi.AbsFile(objabi.WorkingDir(), name, *flags.TrimPath)),
		line: 1,
		file: file,
	}
}

// We want center dot (·) and division slash (∕) to work as identifier characters.
func isIdentRune(ch rune, i int) bool {
	if unicode.IsLetter(ch) {
		return true
	}
	switch ch {
	case '_': // Underscore; traditional.
		return true

# a comment
-T
3
-Drevision=1.3.0