Incident with Actions and Pages

Severity: MajorCategory: BugService: GitHub
This summary is created by Generative AI and may differ from the actual content.
Overview
GitHub Actions and Pages services experienced degraded performance leading to delays in workflow runs and Pages deployments.
Impact
34% of Actions workflow runs experienced delays, and a small percentage of runs using GitHub-hosted runners failed to start. Additionally, Pages deployments for sites without a custom Actions workflow (93% of them) did not run, preventing new changes from being deployed.
Trigger
An unexpected data shape
Detection
We are investigating reports of degraded performance for Actions and Pages
Resolution
We mitigated the incident by excluding the affected pods and correcting the data that led to the crashes. We’ve fixed the source of the unexpected data shape and have improved the overall resilience of our service against such occurrences.
Root Cause
An unexpected data shape led to crashes in some of our pods.
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