Fivetran: Hybrid Deployment Agent jobs failing to start with error "Connection pool shut down"

Incident Report for Fivetran

Resolved

This incident has been resolved.
Posted May 29, 2026 - 23:59 UTC

Monitoring

We are monitoring the results of the fix. Customers are advised to restart their HD agents.
Posted May 29, 2026 - 21:44 UTC

Update

The hot fix should be reflected in the new HD agent images.
For existing HD agents, restarting the controller should resolve the issue. Customers are advised to restart their controller with the following commands:

cd ~/fivetran
./hdagent.sh stop
./hdagent.sh start
Posted May 29, 2026 - 21:30 UTC

Update

We have identified the root cause and have deployed a hot fix.
Posted May 29, 2026 - 20:32 UTC

Identified

The Fivetran Hybrid Deployment Agent is experiencing an issue that may cause syncs to fail to start or connections to fail during setup tests and syncs. HD agent logs show the following error
"Return CreateJobResponse/Failure, Caused By User: false - CREATE_JOB_ERROR/Connection pool shut down {process_id=XXX}"

This issue only affects HD deployments in Docker/Podman environments.
Posted May 29, 2026 - 16:40 UTC
This incident affected: Systems (General Services).