temporalio / temporalio/temporal
Parent / Child workflow stuck after failover
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Since May 28, 2026.
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Description
Expected Behavior
Parent and child workflow can continue make new progress after a force failover.
Actual Behavior
The parent workflow failed to start a new child workflow and stuck.
Steps to Reproduce the Problem
T0 in source cluster:
Parent workflow records start child workflow initiated event.
Child workflow is started but not schedule new workflow task.
T1:
Parent workflow: start child workflow initiated event does not replicate to target cluster.
Child workflow: Workflow started event replicates to target cluster.
T2: failover
T3:
Parent workflow: run the start child workflow initiated command again and failed due to child workflow ID conflict.
Child workflow: Workflow started but no workflow task schedule due to the stuck parent workflow.
Contributor guide
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Assessment
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