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Faster joins: don't stall when a user joins during a fast join (#14606)

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Fixes #12801.
Complement tests are at
https://github.com/matrix-org/complement/pull/567.

Avoid blocking on full state when handling a subsequent join into a
partial state room.

Also always perform a remote join into partial state rooms, since we do
not know whether the joining user has been banned and want to avoid
leaking history to banned users.

Signed-off-by: Mathieu Velten <mathieuv@matrix.org>
Co-authored-by: Sean Quah <seanq@matrix.org>
Co-authored-by: David Robertson <davidr@element.io>
This commit is contained in:
Mathieu Velten 2023-02-11 00:31:05 +01:00 • committed by GitHub
parent d0c713cc85
commit 6cddf24e36
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12 changed files with 196 additions and 94 deletions
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2
synapse/handlers/message.py
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@ -38,6 +38,7 @@ from synapse.api.errors import (
Codes,
ConsentNotGivenError,
NotFoundError,
PartialStateConflictError,
ShadowBanError,
SynapseError,
UnstableSpecAuthError,
@ -57,7 +58,6 @@ from synapse.logging.context import make_deferred_yieldable, run_in_background
from synapse.metrics.background_process_metrics import run_as_background_process
from synapse.replication.http.send_event import ReplicationSendEventRestServlet
from synapse.replication.http.send_events import ReplicationSendEventsRestServlet
from synapse.storage.databases.main.events import PartialStateConflictError
from synapse.storage.databases.main.events_worker import EventRedactBehaviour
from synapse.types import (
MutableStateMap,