gitlab-org--gitlab-foss/doc/development/contributing/issue_workflow.md

Workflow labels

To allow for asynchronous issue handling, we use milestones and labels. Leads and product managers handle most of the scheduling into milestones. Labelling is a task for everyone.

Most issues will have labels for at least one of the following:

• Type: ~feature, ~bug, ~customer, etc.
• Subject: ~wiki, ~"Container Registry", ~ldap, ~api, ~frontend, etc.
• Team: ~Plan, ~Manage, ~Quality, etc.
• Stage: ~"devops:plan", ~"devops:create", etc.
• Release Scoping: ~Deliverable, ~Stretch, ~"Next Patch Release"
• Priority: ~P1, ~P2, ~P3, ~P4
• Severity: ~S1, ~S2, ~S3, ~S4

All labels, their meaning and priority are defined on the labels page.

If you come across an issue that has none of these, and you're allowed to set labels, you can always add the team and type, and often also the subject.

Type labels

Type labels are very important. They define what kind of issue this is. Every issue should have one or more.

Examples of type labels are ~feature, ~bug, ~customer, ~security, and ~direction.

A number of type labels have a priority assigned to them, which automatically makes them float to the top, depending on their importance.

Type labels are always lowercase, and can have any color, besides blue (which is already reserved for subject labels).

The descriptions on the labels page explain what falls under each type label.

Subject labels

Subject labels are labels that define what area or feature of GitLab this issue hits. They are not always necessary, but very convenient.

Subject labels are now used to infer and apply relevant group and devops stage labels. Please apply them whenever possible to facilitate accurate matching. Please refer to this merge request for more information.

Examples of subject labels are ~wiki, ~ldap, ~api, ~issues, ~"merge requests", ~labels, and ~"Container Registry".

If you are an expert in a particular area, it makes it easier to find issues to work on. You can also subscribe to those labels to receive an email each time an issue is labeled with a subject label corresponding to your expertise.

Subject labels are always all-lowercase.

Team labels

Team labels specify what team is responsible for this issue. Assigning a team label makes sure issues get the attention of the appropriate people.

The current team labels are:

• ~Configure
• ~Create
• ~Defend
• ~Distribution
• ~Documentation
• ~Ecosystem
• ~Geo
• ~Gitaly
• ~Growth
• ~Manage
• ~Memory
• ~Monitor
• ~Plan
• ~Quality
• ~Release
• ~Secure
• ~UX
• ~Verify

The descriptions on the labels page explain what falls under the responsibility of each team.

Within those team labels, we also have the ~backend and ~frontend labels to indicate if an issue needs backend work, frontend work, or both.

Team labels are always capitalized so that they show up as the first label for any issue.

Stage labels

Stage labels specify which DevOps stage the issue belongs to.

The current stage labels are:

• ~"devops::manage"
• ~"devops::plan"
• ~"devops::create"
• ~"devops::verify"
• ~"devops::package"
• ~"devops::release"
• ~"devops::configure"
• ~"devops::monitor"
• ~"devops::secure"
• ~"devops::defend"
• ~"devops::growth"
• ~"devops::enablement"

These labels are scoped labels and thus are mutually exclusive.

They differ from the Team labels because teams may work on issues outside their stage.

Normally there is a 1:1 relationship between Stage labels and Team labels, but any issue can be picked up by any team, depending on current priorities. So, an issue labeled ~"devops:create" may be scheduled by the ~Plan team, for example. In such cases, it's usual to include both team labels so each team can be aware of the progress.

The Stage labels are used to generate the direction pages automatically.

Group labels

Group labels specify which groups the issue belongs to.

Examples include:

• ~"group::control"
• ~"group::editor"

These labels are scoped labels and thus are mutually exclusive.

Groups are nested beneath a particular stage, so only one stage label and one group label can be applied to a single issue. You can find the groups listed in the Product Categories pages.

Release Scoping labels

Release Scoping labels help us clearly communicate expectations of the work for the release. There are three levels of Release Scoping labels:

• ~Deliverable: Issues that are expected to be delivered in the current milestone.
• ~Stretch: Issues that are a stretch goal for delivering in the current milestone. If these issues are not done in the current release, they will strongly be considered for the next release.
• ~"Next Patch Release": Issues to put in the next patch release. Work on these first, and add the "Pick Into X" label to the merge request, along with the appropriate milestone.

Each issue scheduled for the current milestone should be labeled ~Deliverable or ~"Stretch". Any open issue for a previous milestone should be labeled ~"Next Patch Release", or otherwise rescheduled to a different milestone.

Priority labels

Priority labels help us define the time a ~bug fix should be completed. Priority determines how quickly the defect turnaround time must be. If there are multiple defects, the priority decides which defect has to be fixed immediately versus later. This label documents the planned timeline & urgency which is used to measure against our target SLO on delivering ~bug fixes.

Label	Meaning	Target SLO (applies only to ~bug and ~security defects)
~P1	Urgent Priority	The current release + potentially immediate hotfix to GitLab.com (30 days)
~P2	High Priority	The next release (60 days)
~P3	Medium Priority	Within the next 3 releases (approx one quarter or 90 days)
~P4	Low Priority	Anything outside the next 3 releases (more than one quarter or 120 days)

Severity labels

Severity labels help us clearly communicate the impact of a ~bug on users. There can be multiple facets of the impact. The below is a guideline.

Label	Meaning	Functionality	Affected Users	GitLab.com Availability	Performance Degradation
~S1	Blocker	Unusable feature with no workaround, user is blocked	Impacts 50% or more of users	Outage, Significant impact on all of GitLab.com
~S2	Critical Severity	Broken Feature, workaround too complex & unacceptable	Impacts between 25%-50% of users	Significant impact on large portions of GitLab.com	Degradation is guaranteed to occur in the near future
~S3	Major Severity	Broken feature with an acceptable workaround	Impacts up to 25% of users	Limited impact on important portions of GitLab.com	Degradation is likely to occur in the near future
~S4	Low Severity	Functionality inconvenience or cosmetic issue	Impacts less than 5% of users	Minor impact on GitLab.com	Degradation may occur but it's not likely

If a bug seems to fall between two severity labels, assign it to the higher-severity label.

• Example(s) of ~S1
  • Data corruption/loss.
  • Security breach.
  • Unable to create an issue or merge request.
  • Unable to add a comment or discussion to the issue or merge request.
• Example(s) of ~S2
  • Cannot submit changes through the web IDE but the commandline works.
  • A status widget on the merge request page is not working but information can be seen in the test pipeline page.
• Example(s) of ~S3
  • Can create merge requests only from the Merge Requests list view, not from an Issue page.
  • Status is not updated in real time and needs a page refresh.
• Example(s) of ~S4
  • Label colors are incorrect.
  • UI elements are not fully aligned.

Label for community contributors

Issues that are beneficial to our users, 'nice to haves', that we currently do not have the capacity for or want to give the priority to, are labeled as ~"Accepting merge requests", so the community can make a contribution.

Community contributors can submit merge requests for any issue they want, but the ~"Accepting merge requests" label has a special meaning. It points to changes that:

1. We already agreed on,
2. Are well-defined,
3. Are likely to get accepted by a maintainer.

We want to avoid a situation when a contributor picks an ~"Accepting merge requests" issue and then their merge request gets closed, because we realize that it does not fit our vision, or we want to solve it in a different way.

We add the ~"Accepting merge requests" label to:

• Low priority ~bug issues (i.e. we do not add it to the bugs that we want to solve in the ~"Next Patch Release")
• Small ~feature
• Small ~"technical debt" issues

After adding the ~"Accepting merge requests" label, we try to estimate the weight of the issue. We use issue weight to let contributors know how difficult the issue is. Additionally:

• We advertise Accepting merge requests issues with weight < 5 as suitable for people that have never contributed to GitLab before on the Up For Grabs campaign
• We encourage people that have never contributed to any open source project to look for Accepting merge requests issues with a weight of 1

If you've decided that you would like to work on an issue, please @-mention the appropriate product manager as soon as possible. The product manager will then pull in appropriate GitLab team members to further discuss scope, design, and technical considerations. This will ensure that your contribution is aligned with the GitLab product and minimize any rework and delay in getting it merged into master.

GitLab team members who apply the ~"Accepting merge requests" label to an issue should update the issue description with a responsible product manager, inviting any potential community contributor to @-mention per above.

Issue triaging

Our issue triage policies are described in our handbook. You are very welcome to help the GitLab team triage issues. We also organize issue bash events once every quarter.

The most important thing is making sure valid issues receive feedback from the development team. Therefore the priority is mentioning developers that can help on those issues. Please select someone with relevant experience from the GitLab team. If there is nobody mentioned with that expertise look in the commit history for the affected files to find someone.

We also use GitLab Triage to automate some triaging policies. This is currently set up as a scheduled pipeline running on quality/triage-ops project.

Feature proposals

To create a feature proposal for CE, open an issue on the issue tracker of CE.

For feature proposals for EE, open an issue on the issue tracker of EE.

In order to help track the feature proposals, we have created a feature label. For the time being, users that are not members of the project cannot add labels. You can instead ask one of the [core team] members to add the label ~feature to the issue or add the following code snippet right after your description in a new line: ~feature.

Please keep feature proposals as small and simple as possible, complex ones might be edited to make them small and simple.

Please submit Feature Proposals using the 'Feature Proposal' issue template provided on the issue tracker.

For changes in the interface, it is helpful to include a mockup. Issues that add to, or change, the interface should be given the ~"UX" label. This will allow the UX team to provide input and guidance. You may need to ask one of the [core team] members to add the label, if you do not have permissions to do it by yourself.

If you want to create something yourself, consider opening an issue first to discuss whether it is interesting to include this in GitLab.

Issue tracker guidelines

Search the issue tracker for similar entries before submitting your own, there's a good chance somebody else had the same issue or feature proposal. Show your support with an award emoji and/or join the discussion.

Please submit bugs using the 'Bug' issue template provided on the issue tracker. The text in the parenthesis is there to help you with what to include. Omit it when submitting the actual issue. You can copy-paste it and then edit as you see fit.

Issue weight

Issue weight allows us to get an idea of the amount of work required to solve one or multiple issues. This makes it possible to schedule work more accurately.

You are encouraged to set the weight of any issue. Following the guidelines below will make it easy to manage this, without unnecessary overhead.

1. Set weight for any issue at the earliest possible convenience
2. If you don't agree with a set weight, discuss with other developers until consensus is reached about the weight
3. Issue weights are an abstract measurement of complexity of the issue. Do not relate issue weight directly to time. This is called anchoring and something you want to avoid.
4. Something that has a weight of 1 (or no weight) is really small and simple. Something that is 9 is rewriting a large fundamental part of GitLab, which might lead to many hard problems to solve. Changing some text in GitLab is probably 1, adding a new Git Hook maybe 4 or 5, big features 7-9.
5. If something is very large, it should probably be split up in multiple issues or chunks. You can simply not set the weight of a parent issue and set weights to children issues.

Regression issues

Every monthly release has a corresponding issue on the CE issue tracker to keep track of functionality broken by that release and any fixes that need to be included in a patch release (see 8.3 Regressions as an example).

As outlined in the issue description, the intended workflow is to post one note with a reference to an issue describing the regression, and then to update that note with a reference to the merge request that fixes it as it becomes available.

If you're a contributor who doesn't have the required permissions to update other users' notes, please post a new note with a reference to both the issue and the merge request.

The release manager will update the notes in the regression issue as fixes are addressed.

Technical and UX debt

In order to track things that can be improved in GitLab's codebase, we use the ~"technical debt" label in GitLab's issue tracker. For missed user experience requirements, we use the ~"UX debt" label.

These labels should be added to issues that describe things that can be improved, shortcuts that have been taken, features that need additional attention, and all other things that have been left behind due to high velocity of development. For example, code that needs refactoring should use the ~"technical debt" label, something that didn't ship according to our Design System guidelines should use the ~"UX debt" label.

Everyone can create an issue, though you may need to ask for adding a specific label, if you do not have permissions to do it by yourself. Additional labels can be combined with these labels, to make it easier to schedule the improvements for a release.

Issues tagged with these labels have the same priority like issues that describe a new feature to be introduced in GitLab, and should be scheduled for a release by the appropriate person.

Make sure to mention the merge request that the ~"technical debt" issue or ~"UX debt" issue is associated with in the description of the issue.

Technical debt in follow-up issues

It's common to discover technical debt during development of a new feature. In the spirit of "minimum viable change", resolution is often deferred to a follow-up issue. However, this cannot be used as an excuse to merge poor-quality code that would otherwise not pass review, or to overlook trivial matters that don't deserve the be scheduled independently, and would be best resolved in the original merge request - or not tracked at all!

The overheads of scheduling, and rate of change in the GitLab codebase, mean that the cost of a trivial technical debt issue can quickly exceed the value of tracking it. This generally means we should resolve these in the original merge request - or simply not create a follow-up issue at all.

For example, a typo in a comment that is being copied between files is worth fixing in the same MR, but not worth creating a follow-up issue for. Renaming a method that is used in many places to make its intent slightly clearer may be worth fixing, but it should not happen in the same MR, and is generally not worth the overhead of having an issue of its own. These issues would invariably be labelled ~P4 ~S4 if we were to create them.

More severe technical debt can have implications for development velocity. If it isn't addressed in a timely manner, the codebase becomes needlessly difficult to change, new features become difficult to add, and regressions abound.

Discoveries of this kind of technical debt should be treated seriously, and while resolution in a follow-up issue may be appropriate, maintainers should generally obtain a scheduling commitment from the author of the original MR, or the engineering or product manager for the relevant area. This may take the form of appropriate Priority / Severity labels on the issue, or an explicit milestone and assignee.

The maintainer must always agree before an outstanding discussion is resolved in this manner, and will be the one to create the issue. The title and description should be of the same quality as those created in the usual manner - in particular, the issue title must not begin with Follow-up! The creating maintainer should also expect to be involved in some capacity when work begins on the follow-up issue.

Stewardship

For issues related to the open source stewardship of GitLab, there is the ~"stewardship" label.

This label is to be used for issues in which the stewardship of GitLab is a topic of discussion. For instance if GitLab Inc. is planning to add features from GitLab EE to GitLab CE, related issues would be labelled with ~"stewardship".

A recent example of this was the issue for bringing the time tracking API to GitLab CE.

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