high load on API post submissions cause SQL IntegrityError on job creation

making many job requests of openquake within a very short period of time, frequently this error occurs with the following details:
File "/home/myuser/work/3rd/oq-engine/openquake/server/db/actions.py", line 105, in create_job', ' job.keys(), job.values()).lastrowid', ' File "/home/sarsonl/work/3rd/oq-engine/openquake/server/dbapi.py", line 335, in __call__', " raise exc.__class__('%s: %s %s' % (exc, templ, args))", "IntegrityError: UNIQUE constraint failed: job.id: INSERT INTO job (id, is_running, description, user_name, calculation_mode, ds_calc_dir) VALUES (?, ?, ?, ?, ?, ?) (51, 1, 'just created', 'myuser', 'to be set', '/home/myuser/oqdata/calc_51')"

I believe that the job creation is not thread safe. I was running a workflow that made 40 requests to the engine within a few seconds timespan.

Is this use-case one which is catered for in openquake, or is it outside the scope?

Thanks