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Astronomer: Incorrect scheduler heartbeat metrics being reported
Astronomer reported a major degradation from 2026-08-18 18:51 UTC to 2026-09-10 22:19 UTC, lasting 23 days 3 h. A metrics reporting bug falsely flagged missed scheduler heartbeats, affecting Astro UI dashboard and monitoring visibility; task execution, scheduling, and workflow processing were unaffected. Astronomer reported rolling out a fix and later marked the issue resolved.
Machine-written from the archived incident (Sol). Check the timeline before relying on it.
Timeline of updates
- investigating
Our metrics pipeline is falsely displaying spikes in scheduler heartbeat metrics, despite underlying component health.
- identified
We've identified the cause of the false availability alerts that have been showing the Astro UI. This is a degradation affecting dashboard and monitoring visibility only. Task execution, scheduling, and workflow processing have not been impacted. The issue is the result of a metrics reporting bug that has been intermittently flagging scheduler heartbeats as missed when they were not. We are actively rolling out a fix that corrects how these metrics are reported.
- resolved
This issue is now resolved.
Rewindex changes for this incident
- Major incident: Incorrect scheduler heartbeat metrics being reported 2026-08-18 18:51 UTC
Impact, status and times are the vendor’s own, as last archived. View on status.astronomer.io (opens in new tab). Astronomer profile · Recent Astronomer incidents · Markdown · JSON