1 files changed, 2 insertions, 6 deletions
diff --git a/synapse/storage/databases/main/state.py b/synapse/storage/databases/main/state.py
index bdd00273cd..9674c4a757 100644
--- a/synapse/storage/databases/main/state.py
+++ b/synapse/storage/databases/main/state.py
@@ -127,13 +127,8 @@ class StateGroupWorkerStore(EventsWorkerStore, SQLBaseStore):
             NotFoundError: if the room is unknown
         """
 
-        # First we try looking up room version from the database, but for old
-        # rooms we might not have added the room version to it yet so we fall
-        # back to previous behaviour and look in current state events.
-        #
         # We really should have an entry in the rooms table for every room we
-        # care about, but let's be a bit paranoid (at least while the background
-        # update is happening) to avoid breaking existing rooms.
+        # care about, but let's be a bit paranoid.
         room_version = self.db_pool.simple_select_one_onecol_txn(
             txn,
             table="rooms",
@@ -440,6 +435,7 @@ class StateGroupWorkerStore(EventsWorkerStore, SQLBaseStore):
         )
 
         # TODO(faster_joins): need to do something about workers here
+        #   https://github.com/matrix-org/synapse/issues/12994
         txn.call_after(self.is_partial_state_event.invalidate, (event.event_id,))
         txn.call_after(
             self._get_state_group_for_event.prefill,