RabbitMQ 3.8.16

RabbitMQ 3.8.16

RabbitMQ 3.8.16 is a maintenance release.

It reintroduces rabbitmq_peer_discovery_aws plugin that was unintentionally removed
from 3.8.15 due to release pipeline changes.

This is the first release to drop support for Erlang 22.3 and introduce support for the upcoming Erlang 24 release.

Obtaining Packages

This release is distributed via GitHub, Cloudsmith,
and PackageCloud.

Erlang/OTP Compatibility Notes

This is the first release to require Erlang 23.2 or later and support upcoming Erlang 24.

Provisioning Latest Erlang Releases explains
what package repositories and tools can be used to provision a recent version of Erlang 23.3.

Upgrade and Compatibility Notes

Upgrade Doc Guides and Change Log

See 3.8.0 release notes upgrade and
compatibility notes first if upgrading from an earlier release series (e.g. 3.7.x).

See the Upgrading guide for general documentation on upgrades and
RabbitMQ change log for release notes of other releases.

Getting Help

Any questions about this release, upgrades or RabbitMQ in general are welcome on the RabbitMQ mailing list
and RabbitMQ community Slack.

Changes Worth Mentioning

Core Server

Erlang Release Series Support

• This release introduces Erlang 24 support and drops support for Erlang 22. Erlang 24 offers non-trivial real world throughput improvements for many
  RabbitMQ installations and workloads. It is expected to ship in May 2021.

  In the meantime, see Provisioning Latest Erlang Releases to
  learn how to provision a recent version of Erlang 23.3.

  GitHub issue: #2900

AWS Peer Discovery Plugin

Bug Fixes

• This plugin was unintentionally excluded from the distribution in 3.8.15 and has now been
  added back.

  GitHub issue: #3023

Management Plugin

Enhancements

• Messaging polling HTTP API endpoint leaked temporary connections it used in case of a polling timeout.
  Note that this endpoint is not recommended to be used outside of QA environments.
  Use a long-lived consumer via one of the supported messaging protocols.

  Contributed by @luos.

  GitHub issue: #3024

Dependency Upgrades

• Cuttlefish has been upgraded from 2.6.0 to 3.0.0
• Lager has been upgraded from 3.8.2 to 3.9.1

Source Code Archives

To obtain source code of the entire distribution, please download the archive named rabbitmq-server-3.8.16.tar.xz
instead of the source tarball produced by GitHub.