Incident with Pull Request Rebase Merges
Severity: Major
Category: Change Process
Service: GitHub
This summary is created by Generative AI and may differ from the actual content.
Overview
Pull Requests service was degraded and failed to generate rebase merge commits due to a configuration change that introduced disagreements between replicas, causing timeouts while computing rebase merge commits.
Impact
the Pull Requests service was degraded and failed to generate rebase merge commits
Trigger
a configuration change that introduced disagreements between replicas
Detection
reports of degraded performance for Pull Requests
Resolution
rolling back the configuration change
Root Cause
a configuration change that introduced disagreements between replicas. These disagreements caused a secondary job to run, triggering timeouts while computing rebase merge commits