Workaround · Reliability & bugs · Blocks work
Schedules intermittently create duplicate runs at the same time
2 source threads · first seen 2020-11 · last seen 2025-09
Summary
Deployments sometimes get two scheduled runs with identical start times, apparently after maintenance or redeployments. The team runs a cleanup script that toggles schedules to fix it.
- Affects
- teams on Kubernetes with Helm
- Workaround
- Cleanup script that detects duplicates and toggles the schedule off and on
Evidence
Excerpts are copied word for word from the source; follow the link to read it in full.
“Scheduled runs are duplicated with the same expected_start_time”
“Occasionally a specific flow will get double-scheduled in the latest version of Prefect server”