==============================
This release candidate fixes bugs related to Synapse 1.58.0rc1's logic for handling device list updates.
Bugfixes
--------
- Fix a bug introduced in Synapse 1.58.0rc1 where the main process could consume excessive amounts of CPU and memory while handling sentry logging failures. ([\#12554](https://github.com/matrix-org/synapse/issues/12554))
- Fix a bug introduced in Synapse 1.58.0rc1 where opentracing contexts were not correctly sent to whitelisted remote servers with device lists updates. ([\#12555](https://github.com/matrix-org/synapse/issues/12555))
Internal Changes
----------------
- Reduce unnecessary work when handling remote device list updates. ([\#12557](https://github.com/matrix-org/synapse/issues/12557))
-----BEGIN PGP SIGNATURE-----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=FAvF
-----END PGP SIGNATURE-----
gpgsig -----BEGIN PGP SIGNATURE-----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=YYmi
-----END PGP SIGNATURE-----
Merge tag 'v1.58.0rc2' into develop
Synapse 1.58.0rc2 (2022-04-26)
==============================
This release candidate fixes bugs related to Synapse 1.58.0rc1's logic for handling device list updates.
Bugfixes
--------
- Fix a bug introduced in Synapse 1.58.0rc1 where the main process could consume excessive amounts of CPU and memory while handling sentry logging failures. ([\#12554](https://github.com/matrix-org/synapse/issues/12554))
- Fix a bug introduced in Synapse 1.58.0rc1 where opentracing contexts were not correctly sent to whitelisted remote servers with device lists updates. ([\#12555](https://github.com/matrix-org/synapse/issues/12555))
Internal Changes
----------------
- Reduce unnecessary work when handling remote device list updates. ([\#12557](https://github.com/matrix-org/synapse/issues/12557))
Try to avoid an OOM by checking fewer extremities.
Generally this is a big rewrite of _maybe_backfill, to try and fix some of the TODOs and other problems in it. It's best reviewed commit-by-commit.
Multiple calls to `EventsWorkerStore._get_events_from_cache_or_db` can
reuse the same database fetch, which is initiated by the first call.
Ensure that cancelling the first call doesn't cancel the other calls
sharing the same database fetch.
Signed-off-by: Sean Quah <seanq@element.io>
This will mainly be useful when dealing with module callbacks, which are
all typed as returning `Awaitable`s instead of coroutines or
`Deferred`s.
Signed-off-by: Sean Quah <seanq@element.io>
When we join a room via the faster-joins mechanism, we end up with "partial
state" at some points on the event DAG. Many parts of the codebase need to
wait for the full state to load. So, we implement a mechanism to keep track of
which events have partial state, and wait for them to be fully-populated.
