eager load NotificationsConfig relationship by default

Author: andrii-i

jupyter_scheduler/orm.py

@@ -113,7 +113,7 @@ class Job(CommonColumns, Base):
     pid = Column(Integer)
     idempotency_token = Column(String(256))
     notifications_config_id = Column(String(36), ForeignKey("notifications_config.id"))
-    notifications_config = relationship("NotificationsConfig")
+    notifications_config = relationship("NotificationsConfig", lazy="joined")
 
 
 class JobDefinition(CommonColumns, Base):
@@ -125,7 +125,7 @@ class JobDefinition(CommonColumns, Base):
     create_time = Column(Integer, default=get_utc_timestamp)
     active = Column(Boolean, default=True)
     notifications_config_id = Column(String(36), ForeignKey("notifications_config.id"))
-    notifications_config = relationship("NotificationsConfig")
+    notifications_config = relationship("NotificationsConfig", lazy="joined")
 
 
 def create_tables(db_url, drop_tables=False):