Cornerstone incident
Emergency Maintenance - Edge Import & Bulk API - US Swimlanes
Cornerstone experienced a minor incident on March 26, 2026 affecting Response Time and Response Time and 1 more component, lasting 3h 25m. The incident has been resolved; the full update timeline is below.
Affected components
Update timeline
- identified Mar 26, 2026, 06:04 PM UTC
We are aware of an issue causing some Edge Import loads and feeds to fail during processing on US swimlanes. To address this, we will be initiating an emergency maintenance shortly. We are allowing all currently processing jobs to complete before maintenance begins. In the meantime, new Edge Import and Bulk API jobs are being temporarily prevented from entering the queue. Once maintenance is complete, new jobs and any impacted scheduled jobs will resume processing. We will continue to provide updates as progress is made.
- identified Mar 26, 2026, 07:31 PM UTC
We are starting the emergency maintenance. During this period, you may encounter a 503 error while trying to access Edge Import. We will continue to provide updates as progress is made.
- resolved Mar 26, 2026, 09:29 PM UTC
Emergency maintenance has been completed and everything is operational at this time.
- postmortem Apr 13, 2026, 06:45 PM UTC
**Issue Summary:** On March 22, 2026, Edge import–related errors were observed across the US Production swimlanes \(US SL1, US SL2, US SL3, US SL5\). **Root Cause:** The issue was caused by instability within the underlying cluster infrastructure, which disrupted queue services and prevented message processing, resulting in Edge import failures across the affected swimlanes. **Corrective Action:** On March 23, 2026, emergency maintenance was performed to stabilize and reset the impacted cluster components. Once stabilized, queue processing resumed and pending Edge imports were successfully completed. **Preventive Measures:** To minimize the risk of recurrence, the cluster infrastructure was thoroughly analyzed and validated as stable following remediation.