How to integrate APScheduler and Imp?

I have built a plugin-based application where "plugins" (python modules) can be loaded by imp and then scheduled for later execution by APScheduler, I was able to successfully integrate them but I want to implement persistence in case of crashes or application reestarts, so I changed the default memory job store to the SqlAlchemyJobStore, it works quite well the first time you execute the program: tasks are loaded, scheduled, saved at the database and executed at the right time.

Problem is when I try to load the application again I get this traceback:

ERROR:apscheduler.jobstores.default:Unable to restore job "d3e0f0068df54d15986e9b7b6757f665" -- removing it
Traceback (most recent call last):
  File "/home/jesus/.local/lib/python2.7/site-packages/apscheduler/jobstores/sqlalchemy.py", line 126, in _get_jobs
jobs.append(self._reconstitute_job(row.job_state))
  File "/home/jesus/.local/lib/python2.7/site-packages/apscheduler/jobstores/sqlalchemy.py", line 114, in _reconstitute_job
job.__setstate__(job_state)
File "/home/jesus/.local/lib/python2.7/site-packages/apscheduler/job.py", line 228, in __setstate__
self.func = ref_to_obj(self.func_ref)
  File "/home/jesus/.local/lib/python2.7/site-packages/apscheduler/util.py", line 257, in ref_to_obj
raise LookupError('Error resolving reference %s: could not import module' % ref)
LookupError: Error resolving reference __init__:run: could not import module

So it is obvious that there is a problem when attempting to import the function again

Here is my scheduler initialization:

    executors = {'default': ThreadPoolExecutor(5)}
    jobstores = {'default': SQLAlchemyJobStore(url='sqlite:///jobs.sqlite')}
    self.scheduler = BackgroundScheduler(executors = executors,jobstores=jobstores)

I have a "tests" dictionary containing the "plugins" that should be loaded and some parameters, "load_plugin" uses imp to load a plugin by it's name.

for test,parameters in tests.items():
        if test in pluggins:
            module=load_plugin(pluggins[test])
            self.jobs[test]=self.scheduler.add_job(module.run,"interval",seconds=parameters["interval"],name=test)

Any idea about how can I handle reconstituting jobs?

Something in the automatic detection of the module name is going wrong. Hard to say what, but the alternative is to manually give it the proper lookup path as a string (e.g. "package.module:function"). If you can do this, you can avoid this problem.