1638103 - Bugbug SETA fallback not working

Status: RESOLVED FIXED

(Firefox Build System :: Task Configuration, defect)

Description

[Andrew Halberstadt [:ahal]]

https://treeherder.mozilla.org/#/jobs?repo=autoland&revision=7baa72e0d62ca44b1650f2a87db9c8124b90b045

In the above push the decision task timed out after 20 minutes. The bugbug service was presumably taking a long time since the push contained so many commits in it.

What should happen, is that after 8 minutes of waiting for bugbug, we give up and then use SETA for all remaining tasks.

Instead, what happens is that each task individually attempts to query bugbug, wait 8 minutes, fallback to SETA. This is happening because we raise an exception here:
https://searchfox.org/mozilla-central/source/taskcluster/taskgraph/util/bugbug.py#61

which means nothing gets memoized. The next task therefore enters into the function and runs the query again.

Comment 1

[Marco Castelluccio [:marco]]

Attachment: Bug 1638103 - Stop trying to hit bugbug after it times out. r=ahal

Comment 2

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/49a4ee7badf5
Stop trying to hit bugbug after it times out. r=ahal

Comment 4

[Sebastian Hengst [:aryx] (needinfo me if it's about an intermittent or backout)]

https://hg.mozilla.org/mozilla-central/rev/49a4ee7badf5