Sigma Computing Incident History

Sigma Engineering has completed the postmortem of this incident. A Root Cause Analysis \(RCA\) is available on the Sigma Community site: [Postmortem for Delayed Scheduled Exports and Materializations](https://community.sigmacomputing.com/t/postmortem-for-delayed-scheduled-exports-and-materializations/7125)

The mitigation measures have proven effective, and our monitoring indicates that this issue is resolved. We will continue monitoring closely this incident for any recurrence in the next hours. We will perform a root cause analysis (RCA) and publish our findings in a postmortem note to the Sigma Community site in the coming days. Impacted Cloud Regions & Services: AWS US-WEST-2 User Experience: We expect users to no longer experience delayed scheduled exports and materializations. Users should have received previously delayed scheduled exports and delayed materializations should have ran. Incident Start Time: Approximately 05:00 UTC June 24, 2026 Incident End Time: Approximately 17:30 UTC June 24, 2026

Mitigation measures have proven effective and our monitoring indicates that delayed scheduled exports and materializations are now being executed. Impacted Cloud Regions & Services: AWS US-WEST-2 User Experience: We expect users to start seeing their delayed exports and materializations come through and new ones process. Incident Start Time: Approximately 05:00 UTC June 24, 2026

Our engineers have identified scheduled exports and materializations being delayed due to slow running queries in our database causing scheduled tasks to be backed up. Mitigations measures have been taken to circumvent the issue causing this backup and our engineers are monitoring their effect closely. Impacted Cloud Regions & Services: AWS US-WEST-2 User Experience: Scheduled exports and materializations remain delayed. Users are advised to manually run scheduled exports as needed in the meantime. Incident Start Time: Approximately 05:00 UTC June 24, 2026

We have received reports of scheduled exports and materializations being delayed and not executing on their planned schedules. We are investigating the issue at the highest priority. Our preliminary investigations indicate the following: Impacted Cloud Regions & Services: AWS US User Experience: Scheduled exports not being received at planned time and materializations not being created at scheduled time. Incident Start Time: Approximately 5:00 UTC June 24, 2026 We will provide updates on this page when we have pertinent status updates.