potiuk opened a new pull request, #68821: URL: https://github.com/apache/airflow/pull/68821
The scheduled **canary** runs the full matrix on all versions and is by far the most expensive run type. AMD ran **4×/day** and ARM **8×/day**. This takes both to **2×/day**, **interleaved** so a full-matrix canary still runs roughly every ~6 h, alternating architecture: - AMD: `58 1,13 * * *` → 01:58, 13:58 - ARM: `28 7,19 * * *` → 07:28, 19:28 **Savings:** halving AMD alone is ~**1,900 compute-h / 2 weeks (~6 % of AMD CI)**; cutting ARM 8→2/day removes **75 %** of the ARM canary schedule. It also relieves runner-pool queuing — each canary is the heaviest job-flood (~269 jobs). **Trade-off (latency, not correctness):** the canary is the "trust earned on `main`" backstop. Interleaving keeps a ~6 h effective cadence for arch-agnostic regressions; an *architecture-specific* regression now has up to a ~12 h detection gap (each arch runs 2×/day) instead of ~6 h / ~3 h. Cron-only change, no test logic touched. --- ##### Was generative AI tooling used to co-author this PR? - [X] Yes — Claude Code (Opus 4.8) Generated-by: Claude Code (Opus 4.8) following [the guidelines](https://github.com/apache/airflow/blob/main/contributing-docs/05_pull_requests.rst#gen-ai-assisted-contributions) -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
