3.7.22 is a maintenance release that focuses on bug fixes.
3.7.x series is supported through March 2020.
Erlang/OTP Compatibility Notes
Provisioning Latest Erlang Releases explains
what package repositories and tools can be used to provision latest patch versions of Erlang
Upgrading to Erlang 21.x or Later Versions
When upgrading to this release and upgrading Erlang to 21.x or later at the same time, extra care has to be taken.
Since CLI tools from RabbitMQ releases older than 3.7.7 will fail on Erlang 21 or later,
RabbitMQ must be upgraded before Erlang.
Upgrade Doc Guides and Change Log
See 3.7.0 release notes upgrade
and compatibility notes first if upgrading from an earlier release.
Any questions about this release, upgrades or RabbitMQ in general are welcome on the
RabbitMQ mailing list.
One-off Erlang VM starts used by startup scripts now do as little work as possible
in order to avoid starting subcomponents, loading configuration and so on.
GitHub issue: rabbitmq/rabbitmq-common#340
rabbitmqctl await_startupfailed with an exception when RabbitMQ application was stopped but the
runtime (Erlang VM) was running.
GitHub issue: rabbitmq/rabbitmq-server#2158
Definition import via HTTP API could fail in if performed via HTTP API (but not management UI)
and contained operator policies.
GitHub issue: rabbitmq/rabbitmq-management#751
When a node cannot compute the number of file descriptors it uses, it will be more resilient and will
log warnings (e.g. about missing
PATHon Windows) much more proactively.
GitHub issue: rabbitmq/rabbitmq-management-agent#86
Metric aggregation optimizations.
GitHub issue: rabbitmq/rabbitmq-management-agent#84
Throughput improvements and reduced CPU usage but slightly higher per connection RAM footprint.
Contributed by Grigory Starinkin (Erlang Solutions).
Last Will messages that use QoS 2 will now be downgraded to QoS 1 just like with "regular" published messages.
GitHub issue: rabbitmq/rabbitmq-mqtt#214
Source code archives
Warning: The source code archive provided by GitHub only contains the source of the broker,
not the plugins or the client libraries. Please download the archive named