fix:implement workflow task cancellation before deletion in DeleteWorkflowV4 function.#4617
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lilianzhu merged 1 commit intokoderover:mainfrom Apr 27, 2026
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…kflowV4 function. Signed-off-by: leozhang2018 <leozhang2018@gmail.com>
PetrusZ
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Apr 27, 2026
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What this PR does / Why we need it:
When a user deletes a workflow that has queued or running tasks, the system soft-deletes all associated tasks (setting is_deleted: true, is_archived: true) without sending a cancellation signal to the execution controller. This results in:
Tasks disappear from the UI immediately (all list queries filter by is_deleted: false)
The workflow controller keeps executing the task in memory — it is unaware of the is_deleted flag
Users have no way to find or cancel the "zombie" task from any UI surface
On service restart, InitQueue also skips these tasks (InCompletedTasks filters is_deleted: false), so they are never cleaned up automatically
What is changed and how it works?
Before soft-deleting workflow tasks in DeleteWorkflowV4, query WorkflowQueueColl by workflow name to retrieve all enqueued tasks, then call CancelWorkflowTask for each one. This triggers a DB status update to Cancelled and publishes a Redis cancel signal, allowing the controller to exit gracefully. Cancellation failures are logged as warnings and do not block the deletion.
Does this PR introduce a user-facing change?
This change is