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Status: Available
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Type: Bug



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luci migration app: Ensure flaky retries of luci builds affect speed and/or correctness

Project Member Reported by bpastene@chromium.org, Feb 15 2018

Issue description

luci migration app: Ensure flaky retries of luci builds affect speed and/or correctness

For example, see luci version of android_arm64_dbg_recipe in https://chromium-review.googlesource.com/c/chromium/src/+/905424/17

It failed, retried, and succeeded. If the first failure doesn't affect the luci analysis as reported by the migration app (https://luci-migration.appspot.com/masters/tryserver.chromium.android/builders/android_arm64_dbg_recipe/), I believe it should because the source of the flake might only apply to luci bots. (And if that's the case, we should definitely be aware of it.) 
 
Labels: LUCI-Backlog
Tentatively sticking into LUCI-Backlog to make sure this isn't forgotten, but it should either get into migration blocker or marked WontFix.
FTR, the reason this is worth bringing up is that android_arm64_dbg_recipe is apparently 100% correct: https://luci-migration.appspot.com/masters/tryserver.chromium.android/builders/android_arm64_dbg_recipe/

Despite one of its bots incorrectly failing *many* builds:
https://chromium-swarm.appspot.com/bot?id=swarm994-c4

Root cause is a broken deployment on that bot (I think), but that kind of systematic failure should have a way of bubbling up.
Description: Show this description

Comment 4 by estaab@chromium.org, Feb 22 2018

Status: Available (was: Untriaged)
Maybe we should compare flake rates between buildbot and LUCI. Perhaps that's harder to collect than speed since we don't already calculate and store it, though.

Maybe once we have the BQ data we can just put together some queries to spot check this.
Using BQ data for checking sgtm. Is there a bug I can follow for getting the table(s) spun up and populated?

Comment 6 by no...@chromium.org, Feb 22 2018

big 788034 is about completed_builds for Buildbucket builds

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