def manager_post_save_handler(sender, instance, created, **kwargs):
    """Run newly created (spawned) processes."""
    if instance.status == Data.STATUS_DONE or instance.status == Data.STATUS_ERROR or created:
        # Run manager at the end of the potential transaction. Otherwise
        # tasks are send to workers before transaction ends and therefore
        # workers cannot access objects created inside transaction.
        transaction.on_commit(lambda: commit_signal(instance.id))
Run newly created (spawned) processes.