diff options
Diffstat (limited to 'synapse/federation/federation_server.py')
| -rw-r--r-- | synapse/federation/federation_server.py | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/synapse/federation/federation_server.py b/synapse/federation/federation_server.py index f4c60e67e3..800f04189f 100644 --- a/synapse/federation/federation_server.py +++ b/synapse/federation/federation_server.py @@ -425,6 +425,7 @@ class FederationServer(FederationBase): " limit: %d, min_depth: %d", earliest_events, latest_events, limit, min_depth ) + missing_events = yield self.handler.on_get_missing_events( origin, room_id, earliest_events, latest_events, limit, min_depth ) @@ -567,6 +568,25 @@ class FederationServer(FederationBase): len(prevs - seen), pdu.room_id, list(prevs - seen)[:5] ) + # XXX: we set timeout to 10s to help workaround + # https://github.com/matrix-org/synapse/issues/1733. + # The reason is to avoid holding the linearizer lock + # whilst processing inbound /send transactions, causing + # FDs to stack up and block other inbound transactions + # which empirically can currently take up to 30 minutes. + # + # N.B. this explicitly disables retry attempts. + # + # N.B. this also increases our chances of falling back to + # fetching fresh state for the room if the missing event + # can't be found, which slightly reduces our security. + # it may also increase our DAG extremity count for the room, + # causing additional state resolution? See #1760. + # However, fetching state doesn't hold the linearizer lock + # apparently. + # + # see https://github.com/matrix-org/synapse/pull/1744 + missing_events = yield self.get_missing_events( origin, pdu.room_id, @@ -574,6 +594,7 @@ class FederationServer(FederationBase): latest_events=[pdu], limit=10, min_depth=min_depth, + timeout=10000, ) # We want to sort these by depth so we process them and |