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Fix chain cover background update to work with split out event persisters #9115

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merged 2 commits into from
Jan 14, 2021
Merged

Fix chain cover background update to work with split out event persisters #9115

merged 2 commits into from
Jan 14, 2021

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erikjohnston
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Fixes:

2021-01-14 16:41:53,667 - synapse.storage.background_updates - 120 - ERROR - background_updates-0 - Error doing update
Capture point (most recent call last):
  File "/usr/local/lib/python3.7/runpy.py", line 193, in _run_module_as_main
    "__main__", mod_spec)
  File "/usr/local/lib/python3.7/runpy.py", line 85, in _run_code
    exec(code, run_globals)
  File "/home/synapse/src/synapse/app/homeserver.py", line 519, in <module>
    main()
  File "/home/synapse/src/synapse/app/homeserver.py", line 515, in main
    run(hs)
  File "/home/synapse/src/synapse/app/homeserver.py", line 506, in run
    logger=logger,
  File "/home/synapse/src/synapse/app/_base.py", line 134, in start_reactor
    run()
  File "/home/synapse/src/synapse/app/_base.py", line 118, in run
    run_command()
  File "/home/synapse/env-py37/lib/python3.7/site-packages/twisted/internet/base.py", line 1283, in run
    self.mainLoop()
  File "/home/synapse/env-py37/lib/python3.7/site-packages/twisted/internet/base.py", line 1292, in mainLoop
    self.runUntilCurrent()
  File "/home/synapse/src/synapse/metrics/__init__.py", line 548, in f
    ret = func(*args, **kwargs)
  File "/home/synapse/env-py37/lib/python3.7/site-packages/twisted/internet/base.py", line 886, in runUntilCurrent
    f(*a, **kw)
  File "/home/synapse/env-py37/lib/python3.7/site-packages/twisted/internet/defer.py", line 501, in errback
    self._startRunCallbacks(fail)
  File "/home/synapse/env-py37/lib/python3.7/site-packages/twisted/internet/defer.py", line 568, in _startRunCallbacks
    self._runCallbacks()
  File "/home/synapse/env-py37/lib/python3.7/site-packages/twisted/internet/defer.py", line 654, in _runCallbacks
    current.result = callback(current.result, *args, **kw)
  File "/home/synapse/env-py37/lib/python3.7/site-packages/twisted/internet/defer.py", line 1475, in gotResult
    _inlineCallbacks(r, g, status)
  File "/home/synapse/env-py37/lib/python3.7/site-packages/twisted/internet/defer.py", line 1416, in _inlineCallbacks
    result = result.throwExceptionIntoGenerator(g)
  File "/home/synapse/env-py37/lib/python3.7/site-packages/twisted/python/failure.py", line 512, in throwExceptionIntoGenerator
    return g.throw(self.type, self.value, self.tb)
Traceback (most recent call last):
  File "/home/synapse/src/synapse/storage/background_updates.py", line 117, in run_background_updates
    self.BACKGROUND_UPDATE_DURATION_MS
  File "/home/synapse/src/synapse/storage/background_updates.py", line 227, in do_next_background_update
    await self._do_background_update(desired_duration_ms)
  File "/home/synapse/src/synapse/storage/background_updates.py", line 264, in _do_background_update
    items_updated = await update_handler(progress, batch_size)
  File "/home/synapse/src/synapse/storage/databases/main/events_bg_updates.py", line 843, in _chain_cover_index
    "_chain_cover_index", _calculate_auth_chain, last_depth, last_stream
  File "/home/synapse/src/synapse/storage/database.py", line 653, in runInteraction
    **kwargs,
  File "/home/synapse/src/synapse/storage/database.py", line 729, in runWithConnection
    self._db_pool.runWithConnection(inner_func, *args, **kwargs)
  File "/home/synapse/env-py37/lib/python3.7/site-packages/twisted/python/threadpool.py", line 250, in inContext
    result = inContext.theWork()
  File "/home/synapse/env-py37/lib/python3.7/site-packages/twisted/python/threadpool.py", line 266, in <lambda>
    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
  File "/home/synapse/env-py37/lib/python3.7/site-packages/twisted/python/context.py", line 122, in callWithContext
    return self.currentContext().callWithContext(ctx, func, *args, **kw)
  File "/home/synapse/env-py37/lib/python3.7/site-packages/twisted/python/context.py", line 85, in callWithContext
    return func(*args,**kw)
  File "/home/synapse/env-py37/lib/python3.7/site-packages/twisted/enterprise/adbapi.py", line 306, in _runWithConnection
    compat.reraise(excValue, excTraceback)
  File "/home/synapse/env-py37/lib/python3.7/site-packages/twisted/python/compat.py", line 464, in reraise
    raise exception.with_traceback(traceback)
  File "/home/synapse/env-py37/lib/python3.7/site-packages/twisted/enterprise/adbapi.py", line 297, in _runWithConnection
    result = func(conn, *args, **kw)
  File "/home/synapse/src/synapse/storage/database.py", line 723, in inner_func
    return func(db_conn, *args, **kwargs)
  File "/home/synapse/src/synapse/storage/database.py", line 523, in new_transaction
    r = func(cursor, *args, **kwargs)
  File "/home/synapse/src/synapse/storage/databases/main/events_bg_updates.py", line 836, in _calculate_auth_chain
    self.hs.get_datastores().persist_events._add_chain_cover_index(
AttributeError: 'NoneType' object has no attribute '_add_chain_cover_index'

Introduced in #9029

@erikjohnston erikjohnston requested a review from a team January 14, 2021 16:43
clokep
clokep reviewed Jan 14, 2021
View reviewed changes
synapse/storage/database.py
Comment on lines +416 to +417
# We define this sequence here so that it can be referenced from both
# the DataStore and PersistEventStore.
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This feels awfully dirty to put this here. Should we have a PersistEventWorkerStore that contains just this?

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@erikjohnston erikjohnston Jan 14, 2021 •
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It is dirty. I don't think having a shared base class works as we the PersistEventStore isn't part of the mixin, and so you'd lead to two instances of the sequence (which is fine for postgres, but not fine for SQLite which tracks updates in memory)

clokep
clokep approved these changes Jan 14, 2021
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✅ But I'm not thrilled about it. 😛

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But I'm not thrilled about it.

Neither am I 😭

@erikjohnston erikjohnston merged commit 659c415 into develop Jan 14, 2021
@erikjohnston erikjohnston deleted the erikj/fix_chain_cover_bg_update_shard branch January 14, 2021 17:19
clokep added a commit that referenced this pull request Jan 20, 2021
@clokep
Merge tag 'v1.26.0rc1' into develop
f81d02d 
Synapse 1.26.0rc1 (2021-01-20)
==============================

This release brings a new schema version for Synapse and rolling back to a previous
verious is not trivial.  Please review [UPGRADE.rst](UPGRADE.rst) for more details
on these changes  and for general upgrade guidance.

Features
--------

- Add support for multiple SSO Identity Providers. ([\#9015](#9015), [\#9017](#9017), [\#9036](#9036), [\#9067](#9067), [\#9081](#9081), [\#9082](#9082), [\#9105](#9105), [\#9107](#9107), [\#9109](#9109), [\#9110](#9110), [\#9127](#9127), [\#9153](#9153), [\#9154](#9154), [\#9177](#9177))
- During user-interactive authentication via single-sign-on, give a better error if the user uses the wrong account on the SSO IdP. ([\#9091](#9091))
- Give the `public_baseurl` a default value, if it is not explicitly set in the configuration file. ([\#9159](#9159))
- Improve performance when calculating ignored users in large rooms. ([\#9024](#9024))
- Implement [MSC2176](matrix-org/matrix-spec-proposals#2176) in an experimental room version. ([\#8984](#8984))
- Add an admin API for protecting local media from quarantine. ([\#9086](#9086))
- Remove a user's avatar URL and display name when deactivated with the Admin API. ([\#8932](#8932))
- Update `/_synapse/admin/v1/users/<user_id>/joined_rooms` to work for both local and remote users. ([\#8948](#8948))
- Add experimental support for handling to-device messages on worker processes. ([\#9042](#9042), [\#9043](#9043), [\#9044](#9044), [\#9130](#9130))
- Add experimental support for handling `/keys/claim` and `/room_keys` APIs on worker processes. ([\#9068](#9068))
- Add experimental support for handling `/devices` API on worker processes. ([\#9092](#9092))
- Add experimental support for moving off receipts and account data persistence off master. ([\#9104](#9104), [\#9166](#9166))

Bugfixes
--------

- Fix a long-standing issue where an internal server error would occur when requesting a profile over federation that did not include a display name / avatar URL. ([\#9023](#9023))
- Fix a long-standing bug where some caches could grow larger than configured. ([\#9028](#9028))
- Fix error handling during insertion of client IPs into the database. ([\#9051](#9051))
- Fix bug where we didn't correctly record CPU time spent in `on_new_event` block. ([\#9053](#9053))
- Fix a minor bug which could cause confusing error messages from invalid configurations. ([\#9054](#9054))
- Fix incorrect exit code when there is an error at startup. ([\#9059](#9059))
- Fix `JSONDecodeError` spamming the logs when sending transactions to remote servers. ([\#9070](#9070))
- Fix "Failed to send request" errors when a client provides an invalid room alias. ([\#9071](#9071))
- Fix bugs in federation catchup logic that caused outbound federation to be delayed for large servers after start up. Introduced in v1.8.0 and v1.21.0. ([\#9114](#9114), [\#9116](#9116))
- Fix corruption of `pushers` data when a postgres bouncer is used. ([\#9117](#9117))
- Fix minor bugs in handling the `clientRedirectUrl` parameter for SSO login. ([\#9128](#9128))
- Fix "Unhandled error in Deferred: BodyExceededMaxSize" errors when .well-known files that are too large. ([\#9108](#9108))
- Fix "UnboundLocalError: local variable 'length' referenced before assignment" errors when the response body exceeds the expected size. This bug was introduced in v1.25.0. ([\#9145](#9145))
- Fix a long-standing bug "ValueError: invalid literal for int() with base 10" when `/publicRooms` is requested with an invalid `server` parameter. ([\#9161](#9161))

Improved Documentation
----------------------

- Add some extra docs for getting Synapse running on macOS. ([\#8997](#8997))
- Correct a typo in the `systemd-with-workers` documentation. ([\#9035](#9035))
- Correct a typo in `INSTALL.md`. ([\#9040](#9040))
- Add missing `user_mapping_provider` configuration to the Keycloak OIDC example. Contributed by @chris-ruecker. ([\#9057](#9057))
- Quote `pip install` packages when extras are used to avoid shells interpreting bracket characters. ([\#9151](#9151))

Deprecations and Removals
-------------------------

- Remove broken and unmaintained `demo/webserver.py` script. ([\#9039](#9039))

Internal Changes
----------------

- Improve efficiency of large state resolutions. ([\#8868](#8868), [\#9029](#9029), [\#9115](#9115), [\#9118](#9118), [\#9124](#9124))
- Various clean-ups to the structured logging and logging context code. ([\#8939](#8939))
- Ensure rejected events get added to some metadata tables. ([\#9016](#9016))
- Ignore date-rotated homeserver logs saved to disk. ([\#9018](#9018))
- Remove an unused column from `access_tokens` table. ([\#9025](#9025))
- Add a `-noextras` factor to `tox.ini`, to support running the tests with no optional dependencies. ([\#9030](#9030))
- Fix running unit tests when optional dependencies are not installed. ([\#9031](#9031))
- Allow bumping schema version when using split out state database. ([\#9033](#9033))
- Configure the linters to run on a consistent set of files. ([\#9038](#9038))
- Various cleanups to device inbox store. ([\#9041](#9041))
- Drop unused database tables. ([\#9055](#9055))
- Remove unused `SynapseService` class. ([\#9058](#9058))
- Remove unnecessary declarations in the tests for the admin API. ([\#9063](#9063))
- Remove `SynapseRequest.get_user_agent`. ([\#9069](#9069))
- Remove redundant `Homeserver.get_ip_from_request` method. ([\#9080](#9080))
- Add type hints to media repository. ([\#9093](#9093))
- Fix the wrong arguments being passed to `BlacklistingAgentWrapper` from `MatrixFederationAgent`. Contributed by Timothy Leung. ([\#9098](#9098))
- Reduce the scope of caught exceptions in `BlacklistingAgentWrapper`. ([\#9106](#9106))
- Improve `UsernamePickerTestCase`. ([\#9112](#9112))
- Remove dependency on `distutils`. ([\#9125](#9125))
- Enforce that replication HTTP clients are called with keyword arguments only. ([\#9144](#9144))
- Fix the Python 3.5 / old dependencies build in CI. ([\#9146](#9146))
- Replace the old `perspectives` option in the Synapse docker config file template with `trusted_key_servers`. ([\#9157](#9157))
richvdh added a commit that referenced this pull request Jan 27, 2021
@richvdh
Merge tag 'v1.26.0' into social_login
fbd9de6 
Synapse 1.26.0 (2021-01-27)
===========================

This release brings a new schema version for Synapse and rolling back to a previous
version is not trivial. Please review [UPGRADE.rst](UPGRADE.rst) for more details
on these changes and for general upgrade guidance.

No significant changes since 1.26.0rc2.

Synapse 1.26.0rc2 (2021-01-25)
==============================

Bugfixes
--------

- Fix receipts and account data not being sent down sync. Introduced in v1.26.0rc1. ([\#9193](#9193), [\#9195](#9195))
- Fix chain cover update to handle events with duplicate auth events. Introduced in v1.26.0rc1. ([\#9210](#9210))

Internal Changes
----------------

- Add an `oidc-` prefix to any `idp_id`s which are given in the `oidc_providers` configuration. ([\#9189](#9189))
- Bump minimum `psycopg2` version to v2.8. ([\#9204](#9204))

Synapse 1.26.0rc1 (2021-01-20)
==============================

This release brings a new schema version for Synapse and rolling back to a previous
version is not trivial. Please review [UPGRADE.rst](UPGRADE.rst) for more details
on these changes and for general upgrade guidance.

Features
--------

- Add support for multiple SSO Identity Providers. ([\#9015](#9015), [\#9017](#9017), [\#9036](#9036), [\#9067](#9067), [\#9081](#9081), [\#9082](#9082), [\#9105](#9105), [\#9107](#9107), [\#9109](#9109), [\#9110](#9110), [\#9127](#9127), [\#9153](#9153), [\#9154](#9154), [\#9177](#9177))
- During user-interactive authentication via single-sign-on, give a better error if the user uses the wrong account on the SSO IdP. ([\#9091](#9091))
- Give the `public_baseurl` a default value, if it is not explicitly set in the configuration file. ([\#9159](#9159))
- Improve performance when calculating ignored users in large rooms. ([\#9024](#9024))
- Implement [MSC2176](matrix-org/matrix-spec-proposals#2176) in an experimental room version. ([\#8984](#8984))
- Add an admin API for protecting local media from quarantine. ([\#9086](#9086))
- Remove a user's avatar URL and display name when deactivated with the Admin API. ([\#8932](#8932))
- Update `/_synapse/admin/v1/users/<user_id>/joined_rooms` to work for both local and remote users. ([\#8948](#8948))
- Add experimental support for handling to-device messages on worker processes. ([\#9042](#9042), [\#9043](#9043), [\#9044](#9044), [\#9130](#9130))
- Add experimental support for handling `/keys/claim` and `/room_keys` APIs on worker processes. ([\#9068](#9068))
- Add experimental support for handling `/devices` API on worker processes. ([\#9092](#9092))
- Add experimental support for moving off receipts and account data persistence off master. ([\#9104](#9104), [\#9166](#9166))

Bugfixes
--------

- Fix a long-standing issue where an internal server error would occur when requesting a profile over federation that did not include a display name / avatar URL. ([\#9023](#9023))
- Fix a long-standing bug where some caches could grow larger than configured. ([\#9028](#9028))
- Fix error handling during insertion of client IPs into the database. ([\#9051](#9051))
- Fix bug where we didn't correctly record CPU time spent in `on_new_event` block. ([\#9053](#9053))
- Fix a minor bug which could cause confusing error messages from invalid configurations. ([\#9054](#9054))
- Fix incorrect exit code when there is an error at startup. ([\#9059](#9059))
- Fix `JSONDecodeError` spamming the logs when sending transactions to remote servers. ([\#9070](#9070))
- Fix "Failed to send request" errors when a client provides an invalid room alias. ([\#9071](#9071))
- Fix bugs in federation catchup logic that caused outbound federation to be delayed for large servers after start up. Introduced in v1.8.0 and v1.21.0. ([\#9114](#9114), [\#9116](#9116))
- Fix corruption of `pushers` data when a postgres bouncer is used. ([\#9117](#9117))
- Fix minor bugs in handling the `clientRedirectUrl` parameter for SSO login. ([\#9128](#9128))
- Fix "Unhandled error in Deferred: BodyExceededMaxSize" errors when .well-known files that are too large. ([\#9108](#9108))
- Fix "UnboundLocalError: local variable 'length' referenced before assignment" errors when the response body exceeds the expected size. This bug was introduced in v1.25.0. ([\#9145](#9145))
- Fix a long-standing bug "ValueError: invalid literal for int() with base 10" when `/publicRooms` is requested with an invalid `server` parameter. ([\#9161](#9161))

Improved Documentation
----------------------

- Add some extra docs for getting Synapse running on macOS. ([\#8997](#8997))
- Correct a typo in the `systemd-with-workers` documentation. ([\#9035](#9035))
- Correct a typo in `INSTALL.md`. ([\#9040](#9040))
- Add missing `user_mapping_provider` configuration to the Keycloak OIDC example. Contributed by @chris-ruecker. ([\#9057](#9057))
- Quote `pip install` packages when extras are used to avoid shells interpreting bracket characters. ([\#9151](#9151))

Deprecations and Removals
-------------------------

- Remove broken and unmaintained `demo/webserver.py` script. ([\#9039](#9039))

Internal Changes
----------------

- Improve efficiency of large state resolutions. ([\#8868](#8868), [\#9029](#9029), [\#9115](#9115), [\#9118](#9118), [\#9124](#9124))
- Various clean-ups to the structured logging and logging context code. ([\#8939](#8939))
- Ensure rejected events get added to some metadata tables. ([\#9016](#9016))
- Ignore date-rotated homeserver logs saved to disk. ([\#9018](#9018))
- Remove an unused column from `access_tokens` table. ([\#9025](#9025))
- Add a `-noextras` factor to `tox.ini`, to support running the tests with no optional dependencies. ([\#9030](#9030))
- Fix running unit tests when optional dependencies are not installed. ([\#9031](#9031))
- Allow bumping schema version when using split out state database. ([\#9033](#9033))
- Configure the linters to run on a consistent set of files. ([\#9038](#9038))
- Various cleanups to device inbox store. ([\#9041](#9041))
- Drop unused database tables. ([\#9055](#9055))
- Remove unused `SynapseService` class. ([\#9058](#9058))
- Remove unnecessary declarations in the tests for the admin API. ([\#9063](#9063))
- Remove `SynapseRequest.get_user_agent`. ([\#9069](#9069))
- Remove redundant `Homeserver.get_ip_from_request` method. ([\#9080](#9080))
- Add type hints to media repository. ([\#9093](#9093))
- Fix the wrong arguments being passed to `BlacklistingAgentWrapper` from `MatrixFederationAgent`. Contributed by Timothy Leung. ([\#9098](#9098))
- Reduce the scope of caught exceptions in `BlacklistingAgentWrapper`. ([\#9106](#9106))
- Improve `UsernamePickerTestCase`. ([\#9112](#9112))
- Remove dependency on `distutils`. ([\#9125](#9125))
- Enforce that replication HTTP clients are called with keyword arguments only. ([\#9144](#9144))
- Fix the Python 3.5 / old dependencies build in CI. ([\#9146](#9146))
- Replace the old `perspectives` option in the Synapse docker config file template with `trusted_key_servers`. ([\#9157](#9157))
netbsd-srcmastr pushed a commit to NetBSD/pkgsrc that referenced this pull request Jan 31, 2021
@Midar
Update chat/matrix-synapse to 1.26.0
b256a24 
Synapse 1.26.0 (2021-01-27)
===========================

This release brings a new schema version for Synapse and rolling back to a previous
version is not trivial. Please review [UPGRADE.rst](UPGRADE.rst) for more details
on these changes and for general upgrade guidance.

No significant changes since 1.26.0rc2.


Synapse 1.26.0rc2 (2021-01-25)
==============================

Bugfixes
--------

- Fix receipts and account data not being sent down sync. Introduced in v1.26.0rc1. ([\#9193](matrix-org/synapse#9193), [\#9195](matrix-org/synapse#9195))
- Fix chain cover update to handle events with duplicate auth events. Introduced in v1.26.0rc1. ([\#9210](matrix-org/synapse#9210))


Internal Changes
----------------

- Add an `oidc-` prefix to any `idp_id`s which are given in the `oidc_providers` configuration. ([\#9189](matrix-org/synapse#9189))
- Bump minimum `psycopg2` version to v2.8. ([\#9204](matrix-org/synapse#9204))


Synapse 1.26.0rc1 (2021-01-20)
==============================

This release brings a new schema version for Synapse and rolling back to a previous
version is not trivial. Please review [UPGRADE.rst](UPGRADE.rst) for more details
on these changes and for general upgrade guidance.

Features
--------

- Add support for multiple SSO Identity Providers. ([\#9015](matrix-org/synapse#9015), [\#9017](matrix-org/synapse#9017), [\#9036](matrix-org/synapse#9036), [\#9067](matrix-org/synapse#9067), [\#9081](matrix-org/synapse#9081), [\#9082](matrix-org/synapse#9082), [\#9105](matrix-org/synapse#9105), [\#9107](matrix-org/synapse#9107), [\#9109](matrix-org/synapse#9109), [\#9110](matrix-org/synapse#9110), [\#9127](matrix-org/synapse#9127), [\#9153](matrix-org/synapse#9153), [\#9154](matrix-org/synapse#9154), [\#9177](matrix-org/synapse#9177))
- During user-interactive authentication via single-sign-on, give a better error if the user uses the wrong account on the SSO IdP. ([\#9091](matrix-org/synapse#9091))
- Give the `public_baseurl` a default value, if it is not explicitly set in the configuration file. ([\#9159](matrix-org/synapse#9159))
- Improve performance when calculating ignored users in large rooms. ([\#9024](matrix-org/synapse#9024))
- Implement [MSC2176](matrix-org/matrix-spec-proposals#2176) in an experimental room version. ([\#8984](matrix-org/synapse#8984))
- Add an admin API for protecting local media from quarantine. ([\#9086](matrix-org/synapse#9086))
- Remove a user's avatar URL and display name when deactivated with the Admin API. ([\#8932](matrix-org/synapse#8932))
- Update `/_synapse/admin/v1/users/<user_id>/joined_rooms` to work for both local and remote users. ([\#8948](matrix-org/synapse#8948))
- Add experimental support for handling to-device messages on worker processes. ([\#9042](matrix-org/synapse#9042), [\#9043](matrix-org/synapse#9043), [\#9044](matrix-org/synapse#9044), [\#9130](matrix-org/synapse#9130))
- Add experimental support for handling `/keys/claim` and `/room_keys` APIs on worker processes. ([\#9068](matrix-org/synapse#9068))
- Add experimental support for handling `/devices` API on worker processes. ([\#9092](matrix-org/synapse#9092))
- Add experimental support for moving off receipts and account data persistence off master. ([\#9104](matrix-org/synapse#9104), [\#9166](matrix-org/synapse#9166))


Bugfixes
--------

- Fix a long-standing issue where an internal server error would occur when requesting a profile over federation that did not include a display name / avatar URL. ([\#9023](matrix-org/synapse#9023))
- Fix a long-standing bug where some caches could grow larger than configured. ([\#9028](matrix-org/synapse#9028))
- Fix error handling during insertion of client IPs into the database. ([\#9051](matrix-org/synapse#9051))
- Fix bug where we didn't correctly record CPU time spent in `on_new_event` block. ([\#9053](matrix-org/synapse#9053))
- Fix a minor bug which could cause confusing error messages from invalid configurations. ([\#9054](matrix-org/synapse#9054))
- Fix incorrect exit code when there is an error at startup. ([\#9059](matrix-org/synapse#9059))
- Fix `JSONDecodeError` spamming the logs when sending transactions to remote servers. ([\#9070](matrix-org/synapse#9070))
- Fix "Failed to send request" errors when a client provides an invalid room alias. ([\#9071](matrix-org/synapse#9071))
- Fix bugs in federation catchup logic that caused outbound federation to be delayed for large servers after start up. Introduced in v1.8.0 and v1.21.0. ([\#9114](matrix-org/synapse#9114), [\#9116](matrix-org/synapse#9116))
- Fix corruption of `pushers` data when a postgres bouncer is used. ([\#9117](matrix-org/synapse#9117))
- Fix minor bugs in handling the `clientRedirectUrl` parameter for SSO login. ([\#9128](matrix-org/synapse#9128))
- Fix "Unhandled error in Deferred: BodyExceededMaxSize" errors when .well-known files that are too large. ([\#9108](matrix-org/synapse#9108))
- Fix "UnboundLocalError: local variable 'length' referenced before assignment" errors when the response body exceeds the expected size. This bug was introduced in v1.25.0. ([\#9145](matrix-org/synapse#9145))
- Fix a long-standing bug "ValueError: invalid literal for int() with base 10" when `/publicRooms` is requested with an invalid `server` parameter. ([\#9161](matrix-org/synapse#9161))


Improved Documentation
----------------------

- Add some extra docs for getting Synapse running on macOS. ([\#8997](matrix-org/synapse#8997))
- Correct a typo in the `systemd-with-workers` documentation. ([\#9035](matrix-org/synapse#9035))
- Correct a typo in `INSTALL.md`. ([\#9040](matrix-org/synapse#9040))
- Add missing `user_mapping_provider` configuration to the Keycloak OIDC example. Contributed by @chris-ruecker. ([\#9057](matrix-org/synapse#9057))
- Quote `pip install` packages when extras are used to avoid shells interpreting bracket characters. ([\#9151](matrix-org/synapse#9151))


Deprecations and Removals
-------------------------

- Remove broken and unmaintained `demo/webserver.py` script. ([\#9039](matrix-org/synapse#9039))


Internal Changes
----------------

- Improve efficiency of large state resolutions. ([\#8868](matrix-org/synapse#8868), [\#9029](matrix-org/synapse#9029), [\#9115](matrix-org/synapse#9115), [\#9118](matrix-org/synapse#9118), [\#9124](matrix-org/synapse#9124))
- Various clean-ups to the structured logging and logging context code. ([\#8939](matrix-org/synapse#8939))
- Ensure rejected events get added to some metadata tables. ([\#9016](matrix-org/synapse#9016))
- Ignore date-rotated homeserver logs saved to disk. ([\#9018](matrix-org/synapse#9018))
- Remove an unused column from `access_tokens` table. ([\#9025](matrix-org/synapse#9025))
- Add a `-noextras` factor to `tox.ini`, to support running the tests with no optional dependencies. ([\#9030](matrix-org/synapse#9030))
- Fix running unit tests when optional dependencies are not installed. ([\#9031](matrix-org/synapse#9031))
- Allow bumping schema version when using split out state database. ([\#9033](matrix-org/synapse#9033))
- Configure the linters to run on a consistent set of files. ([\#9038](matrix-org/synapse#9038))
- Various cleanups to device inbox store. ([\#9041](matrix-org/synapse#9041))
- Drop unused database tables. ([\#9055](matrix-org/synapse#9055))
- Remove unused `SynapseService` class. ([\#9058](matrix-org/synapse#9058))
- Remove unnecessary declarations in the tests for the admin API. ([\#9063](matrix-org/synapse#9063))
- Remove `SynapseRequest.get_user_agent`. ([\#9069](matrix-org/synapse#9069))
- Remove redundant `Homeserver.get_ip_from_request` method. ([\#9080](matrix-org/synapse#9080))
- Add type hints to media repository. ([\#9093](matrix-org/synapse#9093))
- Fix the wrong arguments being passed to `BlacklistingAgentWrapper` from `MatrixFederationAgent`. Contributed by Timothy Leung. ([\#9098](matrix-org/synapse#9098))
- Reduce the scope of caught exceptions in `BlacklistingAgentWrapper`. ([\#9106](matrix-org/synapse#9106))
- Improve `UsernamePickerTestCase`. ([\#9112](matrix-org/synapse#9112))
- Remove dependency on `distutils`. ([\#9125](matrix-org/synapse#9125))
- Enforce that replication HTTP clients are called with keyword arguments only. ([\#9144](matrix-org/synapse#9144))
- Fix the Python 3.5 / old dependencies build in CI. ([\#9146](matrix-org/synapse#9146))
- Replace the old `perspectives` option in the Synapse docker config file template with `trusted_key_servers`. ([\#9157](matrix-org/synapse#9157))
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@erikjohnston @clokep