Add cache for is_host_joined

1 files changed, 1 insertions, 1 deletions

diff --git a/synapse/replication/slave/storage/events.py b/synapse/replication/slave/storage/events.py

index 7034f48b50..94ebbffc1b 100644
--- a/synapse/replication/slave/storage/events.py
+++ b/synapse/replication/slave/storage/events.py
@@ -153,7 +153,7 @@ class SlavedEventStore(BaseSlavedStore):
     get_room_events_stream_for_rooms = (
         DataStore.get_room_events_stream_for_rooms.__func__
     )
-    is_host_joined = DataStore.is_host_joined.__func__
+    is_host_joined = RoomMemberStore.__dict__["is_host_joined"]
     get_stream_token_for_event = DataStore.get_stream_token_for_event.__func__
 
     _set_before_and_after = staticmethod(DataStore._set_before_and_after)