What happens if a scatter-gather throws an error?

What happens if a scatter-gather throws an error?

• A. The error contains the result of every route
• B. Event processing does not continue with the next event
• C. The error is created as a composite that is handled by error handlers
• D. The flow returns to the previous step

Answer: (B)

Scatter-gather runs multiple routes in parallel for one event. If any one of those routes throws an error, the error is raised for the whole flow, and the processing of that event stops until an error handler catches and resolves it. That’s why the effect is that event processing does not continue with the next event until the error is addressed. The error isn’t simply a bag of route results, nor is it typically a composite that is automatically handed to error handlers, and you don’t automatically go back to a previous step—the flow waits for error handling or retries as defined.

Scatter-gather runs multiple routes in parallel for one event. If any one of those routes throws an error, the error is raised for the whole flow, and the processing of that event stops until an error handler catches and resolves it. That’s why the effect is that event processing does not continue with the next event until the error is addressed. The error isn’t simply a bag of route results, nor is it typically a composite that is automatically handed to error handlers, and you don’t automatically go back to a previous step—the flow waits for error handling or retries as defined.