# Sigma Computing: Scheduled Backend Tasks not running on AWS US

- Impact (vendor’s label): major
- Status: resolved
- Started: 2026-01-05 21:38 UTC · Resolved: 2026-01-05 23:33 UTC · Duration: 1.9 h
- Updates: 3 · Affected components: AWS - Sigma - AWS (US), Sigma - AWS (US)
- [Vendor status page: https://stspg.io/99psnr7j6763](https://stspg.io/99psnr7j6763)
- [Company: Sigma Computing](https://rewindex.com/company/sigma-computing.md)

## Summary

Sigma Computing reported a major AWS US outage affecting scheduled exports, materializations, and warehouse view updates from 2026-01-05 21:38 UTC to 2026-01-05 23:33 UTC, lasting 1 h 55 min. A fix was implemented, and Sigma stated that queued tasks should start recovering automatically after resolution. _(machine-written, sol)_
## Timeline of updates

- **investigating** 2026-01-05 21:38 UTC: We are currently investigating an issue affecting scheduled exports, materializations, and warehouse view updates on AWS US
- **monitoring** 2026-01-05 23:13 UTC: A fix has been implemented and we are monitoring the results
- **resolved** 2026-01-05 23:33 UTC: This incident has been resolved. The queued tasks should start recovering automatically

## Rewindex changes for this incident

- 2026-01-05 21:38 UTC: [Major incident: Scheduled Backend Tasks not running on AWS US](https://rewindex.com/change/if989190d842c56.md)


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Canonical: https://rewindex.com/company/sigma-computing/incidents/ys5j4xh9xxhs · Markdown: https://rewindex.com/company/sigma-computing/incidents/ys5j4xh9xxhs.md · JSON: https://rewindex.com/api/v1/companies/sigma-computing/incidents/ys5j4xh9xxhs · Generated 2026-10-18T11:27:23.556Z