Remove SkipGenerateWorkflowTask from signal APIs #6810
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alexshtin
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pdoerner
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Nov 13, 2024
yux0
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Nov 14, 2024
| @@ -472,16 +472,11 @@ func (handler *WorkflowTaskCompletedHandler) Invoke( | |||
| } | |||
| } | |||
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| bufferedEventShouldCreateNewTask := hasBufferedEventsOrMessages && ms.HasAnyBufferedEvent(eventShouldGenerateNewTaskFilter) | |||
| if hasBufferedEventsOrMessages && !bufferedEventShouldCreateNewTask { | |||
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if there is buffer events, we should still flush those events?
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Buffered events are flushed when new WFT is scheduled. This code was just to flush them if new WFT will not be created.
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What changed?
Remove
SkipGenerateWorkflowTaskflag from signal APIs request. Some sort of revert of #4091.Why?
This flag breaks important system invariant: Workflow history must end with Workflow Task event OR event that is no-op for SDK (such as
ActivityScheduledorTimerStarted). This invariant will be leverage at #6709 where server must guarantee that it won't ship actual (non command) events to the worker twice.PR to remove flag from APIs: temporalio/api#476.
How did you test it?
Existing tests.
Potential risks
Although this flag is not exposed by any SDK and not documented, there is a chance that someone use it in production scenarios. For them it will be a breaking change.
Documentation
Not documented.
Is hotfix candidate?
No.