Deleting from event_push_actions needs to use an index

synapse/storage/events.py

@@ -1044,7 +1044,6 @@ class EventsStore(EventsWorkerStore):
                 "event_edge_hashes",
                 "event_edges",
                 "event_forward_extremities",
-                "event_push_actions",
                 "event_reference_hashes",
                 "event_search",
                 "event_signatures",
@@ -1064,6 +1063,14 @@ class EventsStore(EventsWorkerStore):
                 [(ev.event_id,) for ev, _ in events_and_contexts]
             )
 
+        for table in (
+            "event_push_actions",
+        ):
+            txn.executemany(
+                "DELETE FROM %s WHERE room_id = ? AND event_id = ?" % (table,),
+                [(ev.event_id,) for ev, _ in events_and_contexts]
+            )
+
     def _store_event_txn(self, txn, events_and_contexts):
         """Insert new events into the event and event_json tables