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-rw-r--r--synapse/replication/tcp/streams/_base.py11
-rw-r--r--synapse/replication/tcp/streams/events.py6
2 files changed, 11 insertions, 6 deletions
diff --git a/synapse/replication/tcp/streams/_base.py b/synapse/replication/tcp/streams/_base.py
index 54dccd15a6..61b282ab2d 100644
--- a/synapse/replication/tcp/streams/_base.py
+++ b/synapse/replication/tcp/streams/_base.py
@@ -240,13 +240,18 @@ class BackfillStream(Stream):
     ROW_TYPE = BackfillStreamRow
 
     def __init__(self, hs):
-        store = hs.get_datastore()
+        self.store = hs.get_datastore()
         super().__init__(
             hs.get_instance_name(),
-            current_token_without_instance(store.get_current_backfill_token),
-            store.get_all_new_backfill_event_rows,
+            self._current_token,
+            self.store.get_all_new_backfill_event_rows,
         )
 
+    def _current_token(self, instance_name: str) -> int:
+        # The backfill stream over replication operates on *positive* numbers,
+        # which means we need to negate it.
+        return -self.store._backfill_id_gen.get_current_token_for_writer(instance_name)
+
 
 class PresenceStream(Stream):
     PresenceStreamRow = namedtuple(
diff --git a/synapse/replication/tcp/streams/events.py b/synapse/replication/tcp/streams/events.py
index ccc7ca30d8..82e9e0d64e 100644
--- a/synapse/replication/tcp/streams/events.py
+++ b/synapse/replication/tcp/streams/events.py
@@ -155,7 +155,7 @@ class EventsStream(Stream):
         # now we fetch up to that many rows from the events table
 
         event_rows = await self._store.get_all_new_forward_event_rows(
-            from_token, current_token, target_row_count
+            instance_name, from_token, current_token, target_row_count
         )  # type: List[Tuple]
 
         # we rely on get_all_new_forward_event_rows strictly honouring the limit, so
@@ -180,7 +180,7 @@ class EventsStream(Stream):
             upper_limit,
             state_rows_limited,
         ) = await self._store.get_all_updated_current_state_deltas(
-            from_token, upper_limit, target_row_count
+            instance_name, from_token, upper_limit, target_row_count
         )
 
         limited = limited or state_rows_limited
@@ -189,7 +189,7 @@ class EventsStream(Stream):
         # not to bother with the limit.
 
         ex_outliers_rows = await self._store.get_ex_outlier_stream_rows(
-            from_token, upper_limit
+            instance_name, from_token, upper_limit
         )  # type: List[Tuple]
 
         # we now need to turn the raw database rows returned into tuples suitable