RabbitMQ - v3.11.27

RabbitMQ 3.11.27 is a maintenance release in the 3.11.x release series.
This release series goes out of community support on Dec 31, 2023.

Please refer to the upgrade section from v3.11.0 release notes
if upgrading from a version prior to 3.11.0.

This release requires Erlang 25 and supports Erlang versions up to 25.3.x.
RabbitMQ and Erlang/OTP Compatibility Matrix has more details on
Erlang version requirements for RabbitMQ.

Minimum Supported Erlang Version

As of 3.11.0, RabbitMQ requires Erlang 25. Nodes will fail to start on older Erlang releases.

Erlang 25 as our new baseline means much improved performance on ARM64 architectures, profiling with flame graphs
across all architectures, and the most recent TLS 1.3 implementation available to all RabbitMQ 3.11 users.

Changes Worth Mentioning

Release notes can be found on GitHub at rabbitmq-server/release-notes.

Core Broker

Bug Fixes

• Avoids a rare exception that could stop TCP socket writes on a client connection.

GitHub issues: #9991, #9803

Enhancements

• Definition files that are virtual host-specific cannot be imported on boot. Such files will now be
  detected early and the import process will terminate after logging a more informative message.

Previous the import process would run into an obscure exception.

GitHub issues: #10068, #10086

Shovel Plugin

Bug Fixes

• Avoids two Shovels being started after an upgrade from 3.11.25 or older versions.

Two Shovels running concurrently would still transfer messages but because they act as
competing consumers (and publishers), this affected message ordering in the target queue.

Contributed by @gomoripeti (CloudAMQP).

GitHub issues: #9965, #10080

Management Plugin

Bug Fixes

• DELETE /api/policies/{vhost}/{policy} returned a 500 response instead of a 404 one
  when target virtual host did not exist.

GitHub issue: #9983

Dependency Upgrades

None in this release.

Source Code Archives

To obtain source code of the entire distribution, please download the archive named rabbitmq-server-3.11.27.tar.xz
instead of the source tarball produced by GitHub.