Synapse 0.33.5.1 released!

Folks, Synapse 0.33.5.1 is here.

0.33.5.1 is an interesting release. On the one hand it contains the usual bug fixes and performance improvements of a point release, but it also our first versioned release where monolith installs can be run under Python 3.5 and 3.6! Python 3 support is very much in beta, so please be cautious but if you would like to try running under a py3 environment we'd love to get your feedback.

We've been running it ourselves for the past few weeks, and feel pretty good about it, not least the 2-3x improvement in RAM usage.

Currently the only way to run under python 3 is to download via github, there is no deb support as yet, though this will come as soon as we are confident to recommend python 3 as the default version.

We'll be blogging about our porting project in more detail in the future, so watch this space - exciting times!

As ever, you can get the new update here or any of the sources mentioned at https://github.com/matrix-org/synapse. Note, for the first time, Synapse is now available from PyPI, pick it up here.

Synapse 0.33.5.1

Internal Changes

• Fix incompatibility with older Twisted version in tests. Thanks @OlegGirko! (#3940)

Synapse 0.33.5

Features

• Python 3.5 and 3.6 support is now in beta. (#3576)
• Implement event_format filter param in /sync (#3790)
• Add synapse_admin_mau:registered_reserved_users metric to expose number of real reaserved users (#3846)

Bugfixes

• Remove connection ID for replication prometheus metrics, as it creates a large number of new series. (#3788)
• guest users should not be part of mau total (#3800)
• Bump dependency on pyopenssl 16.x, to avoid incompatibility with recent Twisted. (#3804)
• Fix existing room tags not coming down sync when joining a room (#3810)
• Fix jwt import check (#3824)
• fix VOIP crashes under Python 3 (#3821) (#3835)
• Fix manhole so that it works with latest openssh clients (#3841)
• Fix outbound requests occasionally wedging, which can result in federation breaking between servers. (#3845)
• Show heroes if room name/canonical alias has been deleted (#3851)
• Fix handling of redacted events from federation (#3859)
• (#3874)
• Mitigate outbound federation randomly becoming wedged (#3875)

Internal Changes

• CircleCI tests now run on the potential merge of a PR. (#3704)
• http/ is now ported to Python 3. (#3771)
• Improve human readable error messages for threepid registration/account update (#3789)
• Make /sync slightly faster by avoiding needless copies (#3795)
• handlers/ is now ported to Python 3. (#3803)
• Limit the number of PDUs/EDUs per federation transaction (#3805)
• Only start postgres instance for postgres tests on Travis CI (#3806)
• tests/ is now ported to Python 3. (#3808)
• crypto/ is now ported to Python 3. (#3822)
• rest/ is now ported to Python 3. (#3823)
• add some logging for the keyring queue (#3826)
• speed up lazy loading by 2-3x (#3827)
• Improved Dockerfile to remove build requirements after building reducing the image size. (#3834)
• Disable lazy loading for incremental syncs for now (#3840)
• federation/ is now ported to Python 3. (#3847)
• Log when we retry outbound requests (#3853)
• Removed some excess logging messages. (#3855)
• Speed up purge history for rooms that have been previously purged (#3856)
• Refactor some HTTP timeout code. (#3857)
• Fix running merged builds on CircleCI (#3858)
• Fix typo in replication stream exception. (#3860)
• Add in flight real time metrics for Measure blocks (#3871)
• Disable buffering and automatic retrying in treq requests to prevent timeouts. (#3872)
• mention jemalloc in the README (#3877)
• Remove unmaintained "nuke-room-from-db.sh" script (#3888)