Revert "feat: store split modulestore's course indexes in Django/MySQL"

This reverts commit 96e5ff8dce.

cms/djangoapps/contentstore/tests/test_clone_course.py

@@ -125,7 +125,7 @@ class CloneCourseTest(CourseTestCase):
         )
 
         # try to hit the generic exception catch
-        with patch('xmodule.modulestore.split_mongo.mongo_connection.MongoPersistenceBackend.insert_course_index', Mock(side_effect=Exception)):  # lint-amnesty, pylint: disable=line-too-long
+        with patch('xmodule.modulestore.split_mongo.mongo_connection.MongoConnection.insert_course_index', Mock(side_effect=Exception)):  # lint-amnesty, pylint: disable=line-too-long
             split_course4_id = CourseLocator(org="edx3", course="split3", run="rerun_fail")
             fields = {'display_name': 'total failure'}
             CourseRerunState.objects.initiated(split_course3_id, split_course4_id, self.user, fields['display_name'])

cms/djangoapps/contentstore/tests/test_course_listing.py

@@ -157,8 +157,8 @@ class TestCourseListing(ModuleStoreTestCase):
             self.assertEqual(len(list(courses_iter)), 0)
 
     @ddt.data(
-        (ModuleStoreEnum.Type.split, 2),
-        (ModuleStoreEnum.Type.mongo, 1)
+        (ModuleStoreEnum.Type.split, 3),
+        (ModuleStoreEnum.Type.mongo, 2)
     )
     @ddt.unpack
     def test_staff_course_listing(self, default_store, mongo_calls):
@@ -239,8 +239,8 @@ class TestCourseListing(ModuleStoreTestCase):
         )
 
     @ddt.data(
-        (ModuleStoreEnum.Type.split, 2, 2),
-        (ModuleStoreEnum.Type.mongo, 1, 1)
+        (ModuleStoreEnum.Type.split, 3, 3),
+        (ModuleStoreEnum.Type.mongo, 2, 2)
     )
     @ddt.unpack
     def test_course_listing_performance(self, store, courses_list_from_group_calls, courses_list_calls):
@@ -289,7 +289,7 @@ class TestCourseListing(ModuleStoreTestCase):
         # Calls:
         #    1) query old mongo
         #    2) get_more on old mongo
-        #    3) query split (handled with MySQL only)
+        #    3) query split (but no courses so no fetching of data)
 
     @ddt.data(ModuleStoreEnum.Type.split, ModuleStoreEnum.Type.mongo)
     def test_course_listing_errored_deleted_courses(self, store):

cms/djangoapps/contentstore/tests/test_orphan.py

@@ -103,7 +103,7 @@ class TestOrphan(TestOrphanBase):
         self.assertIn(str(location), orphans)
 
     @ddt.data(
-        (ModuleStoreEnum.Type.split, 5, 3),
+        (ModuleStoreEnum.Type.split, 9, 5),
         (ModuleStoreEnum.Type.mongo, 34, 12),
     )
     @ddt.unpack

cms/djangoapps/contentstore/views/tests/test_course_index.py

@@ -391,13 +391,13 @@ class TestCourseIndexArchived(CourseTestCase):
 
     @ddt.data(
         # Staff user has course staff access
-        (True, 'staff', None, 1, 20),
-        (False, 'staff', None, 1, 20),
+        (True, 'staff', None, 3, 18),
+        (False, 'staff', None, 3, 18),
         # Base user has global staff access
-        (True, 'user', ORG, 1, 20),
-        (False, 'user', ORG, 1, 20),
-        (True, 'user', None, 1, 20),
-        (False, 'user', None, 1, 20),
+        (True, 'user', ORG, 3, 18),
+        (False, 'user', ORG, 3, 18),
+        (True, 'user', None, 3, 18),
+        (False, 'user', None, 3, 18),
     )
     @ddt.unpack
     def test_separate_archived_courses(self, separate_archived_courses, username, org, mongo_queries, sql_queries):

cms/djangoapps/contentstore/views/tests/test_item.py

@@ -2528,7 +2528,7 @@ class TestXBlockInfo(ItemTest):
         self.validate_course_xblock_info(json_response, course_outline=True)
 
     @ddt.data(
-        (ModuleStoreEnum.Type.split, 3, 3),
+        (ModuleStoreEnum.Type.split, 4, 4),
         (ModuleStoreEnum.Type.mongo, 5, 7),
     )
     @ddt.unpack

cms/envs/common.py

@@ -1456,7 +1456,6 @@ INSTALLED_APPS = [
 
     # For CMS
     'cms.djangoapps.contentstore.apps.ContentstoreConfig',
-    'common.djangoapps.split_modulestore_django.apps.SplitModulestoreDjangoBackendAppConfig',
 
     'openedx.core.djangoapps.contentserver',
     'cms.djangoapps.course_creators',