1624859 - Don't run all builds with `./mach try auto`

Status: RESOLVED FIXED

(Firefox Build System :: Task Configuration, task, P2)

Description

[Andrew Halberstadt [:ahal]]

While we want ./mach try auto to mimic what happens on autoland as closely as possible, one issue is that autoland runs every build by default. This gives sheriffs a place to backfill quickly in the event it is needed.

On I don't believe we want this behaviour. At the very least we probably shouldn't run builds that don't have any associated tests. Though an easier way to solve this is to simply optimize all of them and then we'd still run any builds for associated tests.

I think we should start with this approach and maybe create a more intelligent optimizer in the future (if it turns out its needed).

Comment 1

[Andrew Halberstadt [:ahal]]

Attachment: Bug 1624859 - [taskgraph] Always optimize build tasks with ./mach try auto, r?tomprince

Build tasks that are dependencies of selected tests, or build tasks that are
explicitly selected via 'try_task_config' will skip optimization and are
therefore not affected by this change.

This simply ensures that we don't run every build with every push via ./mach
try auto.

Comment 2

[Andrew Halberstadt [:ahal]]

Attachment: Bug 1624859 - [taskgraph] Remove 'bugbug' internal class in experimental optimization strategies, r?tomprince

It was making things more complicated.

Comment 3

[Andrew Halberstadt [:ahal]]

Attachment: Bug 1624859 - [ci] Rename 'fuzzing-builds' optimization alias to 'build-fuzzing', r?tomprince

Depends on D68207

Comment 4

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/9f55382156dd
[taskgraph] Remove 'bugbug' internal class in experimental optimization strategies, r=tomprince
https://hg.mozilla.org/integration/autoland/rev/ff704e8cb0ea
[taskgraph] Always optimize build tasks with ./mach try auto, r=tomprince
https://hg.mozilla.org/integration/autoland/rev/d82de935b08b
[ci] Rename 'fuzzing-builds' optimization alias to 'build-fuzzing', r=tomprince

Comment 5

[Noemi Erli[:noemi_erli]]

https://hg.mozilla.org/mozilla-central/rev/9f55382156dd
https://hg.mozilla.org/mozilla-central/rev/ff704e8cb0ea
https://hg.mozilla.org/mozilla-central/rev/d82de935b08b