From 800cfd5774d9726a00c53f2d84ce0286ab64c17b Mon Sep 17 00:00:00 2001 From: Erik Johnston Date: Tue, 27 Mar 2018 13:30:39 +0100 Subject: [PATCH] Comment --- synapse/storage/events.py | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/synapse/storage/events.py b/synapse/storage/events.py index 95b36d669b..f3d65f4338 100644 --- a/synapse/storage/events.py +++ b/synapse/storage/events.py @@ -415,10 +415,11 @@ class EventsStore(EventsWorkerStore): # processing one of these events. # What we're interested in is if the latest extremities # were the same when we created the event as they are - # now. We guess this by looking at the prev events and - # checking if they match up, as when this server creates - # a new event it will use the extremities as the prev - # events. + # now. When this server creates a new event (as opposed + # to receiving it over federation) it will use the + # forward extremities as the prev_events, so we can + # guess this by looking at the prev_events and checking + # if they match the current forward extremities. for ev, _ in ev_ctx_rm: prev_event_ids = set(e for e, _ in ev.prev_events) if latest_event_ids == prev_event_ids: