Apache Harmony is retired at the Apache Software Foundation since Nov 16, 2011.

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Project Guidelines

This document defines the guidelines for the Apache Harmony Project. It includes definitions of how conflict is resolved by voting, who is able to vote, and the procedures to follow for proposing and making changes to the Apache products.

The objective here is to avoid unnecessary conflict over changes and continue to produce a quality system in a timely manner. Not all conflict can be avoided, but at least we can agree on the procedures for conflict to be resolved.


Any of the Apache Developers may vote on any issue or action item. However, the only binding votes are those cast by active members of the Apache Harmony PMC; if the vote is about a change to source code or documentation, the primary author of what is being changed may also cast a binding vote on that issue. All other votes are non-binding. All developers are encouraged to participate in decisions, but the decision itself is made by those who have been long-time contributors to the project. In other words, the Apache Harmony Project is a minimum-threshold meritocracy.

The act of voting carries certain obligations -- voting members are not only stating their opinion, they are agreeing to help do the work of the Apache Harmony Project. Since we are all volunteers, members often become inactive for periods of time in order to take care of their "real jobs" or devote more time to other projects. It is therefore unlikely that the entire group membership will vote on every issue. To account for this, all voting decisions are based on a minimum quorum.

Each vote can be made in one of three flavors:

Yes, agree, or the action should be performed. On some issues, this vote is only binding if the voter has tested the action on their own system(s).
Abstain, no opinion, or I am happy to let the other group members decide this issue. An abstention may have detrimental effects if too many people abstain.
No. On issues where consensus is required, this vote counts as a veto. All vetos must include an explanation of why the veto is appropriate. A veto with no explanation is void. No veto can be overruled. If you disagree with the veto, you should lobby the person who cast the veto. Voters intending to veto an action item should make their opinions known to the group immediately, so that the problem can be remedied as early as possible.

An action item requiring consensus approval must receive at least 3 binding +1 votes and no vetos. An action item requiring majority approval must receive at least 3 binding +1 votes and more +1 votes than -1 votes (i.e., a majority with a minimum quorum of three positive votes). All other action items are considered to have lazy approval until someone votes -1, after which point they are decided by either consensus or a majority vote, depending upon the type of action item.

Votes are tallied within the STATUS file, adjacent to the action item under vote. All votes must be sent to the mailing list.

Types of Action Items

Long Term Plans
Long term plans are simply announcements that group members are working on particular issues related to the Apache software. These are not voted on, but group members who do not agree with a particular plan, or think an alternate plan would be better, are obligated to inform the group of their feelings. In general, it is always better to hear about alternate plans prior to spending time on less adequate solutions.
Short Term Plans
Short term plans are announcements that a developer is working on a particular set of documentation or code files, with the implication that other developers should avoid them or try to coordinate their changes. This is a good way to proactively avoid conflict and possible duplication of work.
Release Plan
A release plan is used to keep all the developers aware of when a release is desired, who will be the release manager, when the repository will be frozen in order to create the release, and assorted other trivia to keep us from tripping over ourselves during the final moments. Lazy majority decides each issue in the release plan.
Release Testing
After a new release is built, colloquially termed a tarball, it must be tested before being released to the public. Majority approval is required before the tarball can be publicly released.
Showstoppers are issues that require a fix be in place before the next public release. They are listed in the STATUS file in order to focus special attention on the problem. An issue becomes a showstopper when it is listed as such in STATUS and remains so by lazy consensus.
Product Changes
Changes to the Apache products, including code and documentation, will appear as action items under several categories corresponding to the change status:
An idea or plan for a change. These are usually only listed in STATUS when the change is substantial, significantly impacts the API, or is likely to be controversial. Votes are being requested early so as to uncover conflicts before too much work is done.
proposed patch
A specific set of changes to the current product in the form of input to the patch command (a diff output).
committed change
A one-line summary of a change that has been committed to the repository since the last public release.

All product changes to the currently active repository are subject to lazy consensus. All product changes to a prior-branch (old version) repository require consensus before the change is committed.

When to Commit a Change

Ideas must be review-then-commit; patches can be commit-then-review. With a commit-then-review process, we trust that the developer doing the commit has a high degree of confidence in the change. Doubtful changes, new features, and large-scale overhauls need to be discussed before being committed to a repository. Any major change must receive consensus approval on the mailing list before being committed. For detailed instructions on reporting, resolving and closing issues, refer to Good Issue Resolution Guideline.

Each developer is responsible for notifying the mailing list and adding an action item to STATUS when they have an idea for a new feature or major change to propose for the product. The distributed nature of the Apache project requires an advance notice of 48 hours in order to properly review a major change -- consensus approval of either the concept or a specific patch is required before the change can be committed. Note that a committer might veto the concept (with an adequate explanation), but later rescind that veto if a specific patch satisfies their objections. No advance notice is required to commit singular bug fixes.

Related changes should be committed as a group, or very closely together. Half-completed projects should not be committed unless doing so is necessary to pass the baton to another developer who has agreed to complete the project in short order. All code changes must be successfully compiled on the developer's platform before being committed.

The current source code tree should be capable of complete compilation at all times. However, it is sometimes impossible for a developer on one platform to avoid breaking some other platform when a change is committed, particularly when completing the change requires access to a special development tool on that other platform. If it is anticipated that a given change will break some other platform, the committer must indicate that in the commit log.

The committer is responsible to follow the Apache Harmony procedure for any third-party code or documentation they commit to the repository. All software committed to the repository must be covered by the Apache LICENSE or contain a copyright and license that allows redistribution under the same conditions as the Apache LICENSE.

A committed change must be reversed if it is vetoed by one of the voting committers and the veto conditions cannot be immediately satisfied by the equivalent of a "bug fix" commit. The veto must be rescinded before the change can be included in any public release.

Patch Format

When a specific change to the software is proposed for discussion or voting on the mailing list, it should be presented in the form of input to the patch command. When sent to the mailing list, the message should contain a Subject beginning with [PATCH] and a distinctive one-line summary corresponding to the action item for that patch. Afterwards, the patch summary in the STATUS file should be updated to point to the Message-ID of that message.

The patch should be created by using the diff -u command from the original software file(s) to the modified software file(s).


diff -u http_main.c.orig http_main.c >> patchfile.txt


cvs diff -u http_main.c >> patchfile.txt

All patches necessary to address an action item should be concatenated within a single patch message. If later modification of the patch proves necessary, the entire new patch should be posted and not just the difference between two patches. The STATUS file entry should then be updated to point to the new patch message.

The completed patchfile should produce no errors or prompts when the command,

patch -s < patchfile

is issued in the target repository.

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