Purge dataset if finishing job for purged output

        quota_source_info = None

        # Once datasets are collected, set the total dataset size (includes extra files)

        for dataset_assoc in job.output_datasets:

            if not dataset_assoc.dataset.dataset.purged:

            dataset = dataset_assoc.dataset.dataset

            if not dataset.purged:

                # assume all datasets in a job get written to the same objectstore

                quota_source_info = dataset_assoc.dataset.dataset.quota_source_info

                collected_bytes += dataset_assoc.dataset.set_total_size()

                quota_source_info = dataset.quota_source_info

                collected_bytes += dataset.set_total_size()

            else:

                # Purge, in case job wrote directly to object store

                dataset.full_delete()

        user = job.user

        if user and collected_bytes > 0 and quota_source_info is not None and quota_source_info.use: