● Covered by 1 source · 1 reportMedium impact1 neutral
GitHub resolves incident affecting Pull Requests, Issues, and Search functionality
Key points
- GitHub.com experienced errors on Pull Requests, Issues, and Search.
- Users encountered 500 errors when loading affected pages.
- The root cause was a database index hint referencing a removed index.
- A mitigation was applied by disabling the problematic configuration.
Incident Overview
On Wednesday, August 12, GitHub reported an incident affecting core functionalities including Pull Requests, Issues, and Search on its platform. Users attempting to access these features experienced 500 errors and degraded performance.
Root Cause Identified
GitHub's engineering teams investigated the issue and identified the source of the errors. A recent database migration had removed an index, but a database index hint was still referencing this removed index. This discrepancy led to query failures for some users across the affected services.
Mitigation and Resolution
To resolve the problem, GitHub disabled the problematic configuration that was causing the errors. This mitigation led to a recovery across the affected services. The platform is now monitoring its systems to confirm full stability and resolution of the incident.
Impact and Follow-up
The incident temporarily disrupted development workflows for users relying on GitHub's Pull Request and Issue tracking features. GitHub has stated that a detailed root cause analysis will be shared once it becomes available, providing further insights into the incident and preventive measures.
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Primary sources
GitHub articles/github-privacy-statement GitHub github/roadmap GitHub devops/tools GitHub get-started/exploring-integrations GitHub site-policy/github-terms GitHub github/site-policyReporting from
GitHub experienced an incident causing errors and degraded performance for Pull Requests, Issues, and Search on GitHub.com. The issue was traced to a database index reference problem following a recent migration and has since been resolved.