Sqoop execution

>It's actually a new instance of stats just for this specific flow. They work and can be used to tell (for instance) whether the flow/job/execution succeeds or fails. I haven't looked at whether there is any other useful info in them,

The execution itself tells you though if the flow succeeded. If the flow fails you won't get back a `JobStats` instance. The `JobStats` class itself only wraps a Map of stats.