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Faster joins: Omit device list updates from partial state rooms in /sync (#15069)

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...when lazy loading of members is not enabled. It's weird to notify
a client that another user's device list has changed when the client
doesn't think that they share a room.

Note that when a room is un-partial stated, device list updates are
emitted for every member in that room over /sync.

Signed-off-by: Sean Quah <seanq@matrix.org>
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Sean Quah 2023-02-14 12:32:19 +00:00 committed by GitHub
parent cb262713b7
commit 463c19ac36
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1
changelog.d/15069.misc Normal file
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@ -0,0 +1 @@
Faster joins: omit device list updates originating from partial state rooms in /sync responses without lazy loading of members enabled.

5
synapse/handlers/sync.py
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@ -1399,6 +1399,11 @@ class SyncHandler:
for room_id, is_partial_state in results.items() for room_id, is_partial_state in results.items()
if is_partial_state if is_partial_state
) )
membership_change_events = [
event
for event in membership_change_events
if not results.get(event.room_id, False)
]
# Incremental eager syncs should additionally include rooms that # Incremental eager syncs should additionally include rooms that
# - we are joined to # - we are joined to