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authorRichard van der Hoff <richard@matrix.org>2020-05-06 11:58:31 +0100
committerRichard van der Hoff <richard@matrix.org>2020-05-06 11:58:31 +0100
commit2e0c46ca07564d9592e5ec7d260e40c0659daa80 (patch)
tree598b91e8ee09902969038d9e1616471a7108adfe /synapse/events/snapshot.py
parentMerge pull request #7429 from matrix-org/rav/upsert_for_device_list (diff)
parentMove logs about discarded RDATA to debug (#7421) (diff)
downloadsynapse-2e0c46ca07564d9592e5ec7d260e40c0659daa80.tar.xz
Merge branch 'release-v1.13.0' into develop
Diffstat (limited to 'synapse/events/snapshot.py')
-rw-r--r--synapse/events/snapshot.py7
1 files changed, 5 insertions, 2 deletions
diff --git a/synapse/events/snapshot.py b/synapse/events/snapshot.py
index 9ea85e93e6..7c5f620d09 100644
--- a/synapse/events/snapshot.py
+++ b/synapse/events/snapshot.py
@@ -322,11 +322,14 @@ class _AsyncEventContextImpl(EventContext):
         self._current_state_ids = yield self._storage.state.get_state_ids_for_group(
             self.state_group
         )
-        if self._prev_state_id and self._event_state_key is not None:
+        if self._event_state_key is not None:
             self._prev_state_ids = dict(self._current_state_ids)
 
             key = (self._event_type, self._event_state_key)
-            self._prev_state_ids[key] = self._prev_state_id
+            if self._prev_state_id:
+                self._prev_state_ids[key] = self._prev_state_id
+            else:
+                self._prev_state_ids.pop(key, None)
         else:
             self._prev_state_ids = self._current_state_ids