What payload is returned by a Database SELECT operation that does not match any rows in the database?

Refer to the exhibits.In the requestFlow an HTTP Request operation is configured to send an HTTP request with an XML payload. The request is sent to the HTTP Listener in the transform Flow.That flow transforms the incoming payload into JSON format and returns the response to the HTTP request. The response of the request is stored in a target variable named the Result.What is the payload at the Logger component after the HTTP Request?

In the execution of scatter gather, the 'sleep 2 sec' Flow Reference takes about 2 sec to complete, and the 'sleep 8 sec' Flow Reference takes about 8 sec to complete.About how many sec does it take from the Scatter-Gather is called until the 'Set Payload' transformer is called?

What is the output of Dataweave Map operator?

Refer to the exhibits.What payload and variable are logged at the end of the main flow?