Sigma Computing change history: Service Degradation for writeback functionality on Databricks connections

Sigma reported a major degradation affecting CSV uploads to Sample Connection and potentially Databricks writeback functionality, including Input Tables, caused by a Databricks AWS US West 2 service interruption. The incident started at 2026-10-12 15:11 UTC and was resolved at 2026-10-12 18:17 UTC, lasting 3 h 6 min; writeback failures were no longer occurring.