Merge pull request #935 from matrix-org/erikj/backfill_notifs

Don't notify pusher pool for backfilled events

synapse/handlers/federation.py

@@ -1118,6 +1118,7 @@ class FederationHandler(BaseHandler):
             backfilled=backfilled,
         )
 
+        if not backfilled:
             # this intentionally does not yield: we don't care about the result
             # and don't need to wait for it.
             preserve_fn(self.hs.get_pusherpool().on_new_notifications)(