2025275 - manifest-timings-daily produces empty data when no pushes land on mozilla-central

Status: RESOLVED FIXED

(Testing :: General, defect)

Description

[Florian Quèze [:florian]]

The manifest-timings-daily task produced an empty manifests.json file (aggregating 0 jobs) because there were no merges to mozilla-central on Sunday 2026-03-22. A merge happened Saturday at 11pm and another one Monday at 1am, so the previous-day query returned no pushes.

Two fixes:

• Fail the task when no timing data is collected, so the previous day's data is not invalidated by an empty file.
• When the query for previous-day pushes returns fewer than 2 results, fetch the most recent pushes before end-of-day to ensure we aggregate data from at least 2 pushes.

Comment 1

[Florian Quèze [:florian]]

Attachment: Bug 2025275 - Fail manifest-timings-daily task when no data is collected r=jcristau

The task was silently producing empty output files when no pushes landed
on mozilla-central (e.g. on Sundays), invalidating the previous day's data.

Comment 2

[Florian Quèze [:florian]]

Attachment: Bug 2025275 - Fetch older pushes when fewer than 2 landed on the target day r=jcristau

When no or only one push lands on mozilla-central in a day (e.g. weekends),
expand the search to include the most recent pushes before end-of-day so we
aggregate data from at least 2 pushes.

Comment 3

[Pulsebot]

Pushed by [e-mail]:
https://github.com/mozilla-firefox/firefox/commit/a4143d5a8162
https://hg.mozilla.org/integration/autoland/rev/22ad7aafee00
Fail manifest-timings-daily task when no data is collected r=jcristau
https://github.com/mozilla-firefox/firefox/commit/26c440c6196e
https://hg.mozilla.org/integration/autoland/rev/1f2552c4d19d
Fetch older pushes when fewer than 2 landed on the target day r=jcristau

Comment 4

[Serban Stanca [:SerbanS]]

https://hg.mozilla.org/mozilla-central/rev/22ad7aafee00
https://hg.mozilla.org/mozilla-central/rev/1f2552c4d19d