From 2ec9c58496e2138cbc4364aba238997c393d5308 Mon Sep 17 00:00:00 2001 From: Sean Quah <8349537+squahtx@users.noreply.github.com> Date: Mon, 23 Jan 2023 10:31:36 +0000 Subject: [PATCH] Faster joins: Update room stats and the user directory on workers when finishing join (#14874) * Faster joins: Update room stats and user directory on workers when done When finishing a partial state join to a room, we update the current state of the room without persisting additional events. Workers receive notice of the current state update over replication, but neglect to wake the room stats and user directory updaters, which then get incidentally triggered the next time an event is persisted or an unrelated event persister sends out a stream position update. We wake the room stats and user directory updaters at the appropriate time in this commit. Part of #12814 and #12815. Signed-off-by: Sean Quah * fixup comment Signed-off-by: Sean Quah --- changelog.d/14874.bugfix | 1 + synapse/handlers/federation.py | 7 ++++--- synapse/replication/tcp/client.py | 6 ++++++ synapse/storage/controllers/state.py | 2 -- 4 files changed, 11 insertions(+), 5 deletions(-) create mode 100644 changelog.d/14874.bugfix diff --git a/changelog.d/14874.bugfix b/changelog.d/14874.bugfix new file mode 100644 index 000000000..91ae2ea9b --- /dev/null +++ b/changelog.d/14874.bugfix @@ -0,0 +1 @@ +Faster joins: Fix a bug in worker deployments where the room stats and user directory would not get updated when finishing a fast join until another event is sent or received. diff --git a/synapse/handlers/federation.py b/synapse/handlers/federation.py index 7620245e2..321712786 100644 --- a/synapse/handlers/federation.py +++ b/synapse/handlers/federation.py @@ -1880,9 +1880,10 @@ class FederationHandler: room_id ) - # TODO(faster_joins) update room stats and user directory? - # https://github.com/matrix-org/synapse/issues/12814 - # https://github.com/matrix-org/synapse/issues/12815 + # Poke the notifier so that other workers see the write to + # the un-partial-stated rooms stream. + self._notifier.notify_replication() + return # we raced against more events arriving with partial state. Go round diff --git a/synapse/replication/tcp/client.py b/synapse/replication/tcp/client.py index 493f61667..2a9cb499a 100644 --- a/synapse/replication/tcp/client.py +++ b/synapse/replication/tcp/client.py @@ -207,6 +207,12 @@ class ReplicationDataHandler: # we don't need to optimise this for multiple rows. for row in rows: if row.type != EventsStreamEventRow.TypeId: + # The row's data is an `EventsStreamCurrentStateRow`. + # When we recompute the current state of a room based on forward + # extremities (see `update_current_state`), no new events are + # persisted, so we must poke the replication callbacks ourselves. + # This functionality is used when finishing up a partial state join. + self.notifier.notify_replication() continue assert isinstance(row, EventsStreamRow) assert isinstance(row.data, EventsStreamEventRow) diff --git a/synapse/storage/controllers/state.py b/synapse/storage/controllers/state.py index 26d79c6e6..2045169b9 100644 --- a/synapse/storage/controllers/state.py +++ b/synapse/storage/controllers/state.py @@ -493,8 +493,6 @@ class StateStorageController: up to date. """ # FIXME(faster_joins): what do we do here? - # https://github.com/matrix-org/synapse/issues/12814 - # https://github.com/matrix-org/synapse/issues/12815 # https://github.com/matrix-org/synapse/issues/13008 return await self.stores.main.get_partial_current_state_deltas(