BasPH commented on a change in pull request #5303:  [AIRFLOW-4535] Break 
jobs.py into multiple files
URL: https://github.com/apache/airflow/pull/5303#discussion_r285372806
 
 

 ##########
 File path: airflow/jobs/scheduler_job.py
 ##########
 @@ -16,292 +16,49 @@
 # KIND, either express or implied.  See the License for the
 # specific language governing permissions and limitations
 # under the License.
+#
 
-import getpass
 import logging
 import multiprocessing
 import os
 import signal
 import sys
 import threading
 import time
-from collections import OrderedDict, defaultdict
+from collections import defaultdict
 from datetime import timedelta
 from time import sleep
 
 import six
-from sqlalchemy import (Column, Index, Integer, String, and_, func, not_, or_)
-from sqlalchemy.exc import OperationalError
+from sqlalchemy import (and_, func, not_, or_)
 
 Review comment:
   no need for the brackets here

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