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-rw-r--r--synapse/storage/registration.py42
-rw-r--r--synapse/storage/roommember.py2
-rw-r--r--synapse/storage/schema/delta/56/current_state_events_membership.sql3
-rw-r--r--synapse/storage/schema/delta/56/current_state_events_membership_mk2.sql24
4 files changed, 46 insertions, 25 deletions
diff --git a/synapse/storage/registration.py b/synapse/storage/registration.py
index 999c10a308..55e4e84d71 100644
--- a/synapse/storage/registration.py
+++ b/synapse/storage/registration.py
@@ -569,6 +569,27 @@ class RegistrationWorkerStore(SQLBaseStore):
             desc="get_id_servers_user_bound",
         )
 
+    @cachedInlineCallbacks()
+    def get_user_deactivated_status(self, user_id):
+        """Retrieve the value for the `deactivated` property for the provided user.
+
+        Args:
+            user_id (str): The ID of the user to retrieve the status for.
+
+        Returns:
+            defer.Deferred(bool): The requested value.
+        """
+
+        res = yield self._simple_select_one_onecol(
+            table="users",
+            keyvalues={"name": user_id},
+            retcol="deactivated",
+            desc="get_user_deactivated_status",
+        )
+
+        # Convert the integer into a boolean.
+        return res == 1
+
 
 class RegistrationStore(
     RegistrationWorkerStore, background_updates.BackgroundUpdateStore
@@ -1317,24 +1338,3 @@ class RegistrationStore(
             user_id,
             deactivated,
         )
-
-    @cachedInlineCallbacks()
-    def get_user_deactivated_status(self, user_id):
-        """Retrieve the value for the `deactivated` property for the provided user.
-
-        Args:
-            user_id (str): The ID of the user to retrieve the status for.
-
-        Returns:
-            defer.Deferred(bool): The requested value.
-        """
-
-        res = yield self._simple_select_one_onecol(
-            table="users",
-            keyvalues={"name": user_id},
-            retcol="deactivated",
-            desc="get_user_deactivated_status",
-        )
-
-        # Convert the integer into a boolean.
-        return res == 1
diff --git a/synapse/storage/roommember.py b/synapse/storage/roommember.py
index e60409ed73..eecb276465 100644
--- a/synapse/storage/roommember.py
+++ b/synapse/storage/roommember.py
@@ -935,7 +935,7 @@ class RoomMemberStore(RoomMemberWorkerStore):
             while processed < batch_size:
                 txn.execute(
                     """
-                        SELECT MIN(room_id) FROM rooms WHERE room_id > ?
+                        SELECT MIN(room_id) FROM current_state_events WHERE room_id > ?
                     """,
                     (last_processed_room,),
                 )
diff --git a/synapse/storage/schema/delta/56/current_state_events_membership.sql b/synapse/storage/schema/delta/56/current_state_events_membership.sql
index b2e08cd85d..473018676f 100644
--- a/synapse/storage/schema/delta/56/current_state_events_membership.sql
+++ b/synapse/storage/schema/delta/56/current_state_events_membership.sql
@@ -20,6 +20,3 @@
 -- for membership events. (Will also be null for membership events until the
 -- background update job has finished).
 ALTER TABLE current_state_events ADD membership TEXT;
-
-INSERT INTO background_updates (update_name, progress_json) VALUES
-  ('current_state_events_membership', '{}');
diff --git a/synapse/storage/schema/delta/56/current_state_events_membership_mk2.sql b/synapse/storage/schema/delta/56/current_state_events_membership_mk2.sql
new file mode 100644
index 0000000000..3133d42d4a
--- /dev/null
+++ b/synapse/storage/schema/delta/56/current_state_events_membership_mk2.sql
@@ -0,0 +1,24 @@
+/* Copyright 2019 The Matrix.org Foundation C.I.C.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+-- We add membership to current state so that we don't need to join against
+-- room_memberships, which can be surprisingly costly (we do such queries
+-- very frequently).
+-- This will be null for non-membership events and the content.membership key
+-- for membership events. (Will also be null for membership events until the
+-- background update job has finished).
+
+INSERT INTO background_updates (update_name, progress_json) VALUES
+  ('current_state_events_membership', '{}');