Attempt to seperate JobWatcher from multiprocessing

[dimberman]

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[potiuk]

Looking at the errors/timeouts. I think we still drag too many things with the run method. I am still figuring out how exactly multiprocessing.Process pickles it's run parameter. Seems that making the method static did not help. @ashb - I'd love to understand how it works. Maybe you can explain what happens here? This is very interesting, but looks like we are trying to send half ot Airflow objects between the processes with that single run= method.

BTW. Did I tell too many times, that I hate multiprocessing?

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.