def handleWarningSignal(self, signum, frame):
self._isInterrupted.set()<EOL>
Handles a "warning signal" from the scheduler. This is received when the
scheduler is about to kill the the current process so that the worker can be
allocated to another job.

Right now, this function just sets the current model to the "Orphaned" state
in the models table so that another worker can eventually re-run this model

Parameters:
-----------------------------------------------------------------------