RabbitMQ - v3.12.8

RabbitMQ 3.12.8 is a maintenance release in the 3.12.x release series.

Please refer to the upgrade section from the 3.12.0 release notes
if upgrading from a version prior to 3.12.0.

This release requires Erlang 25 and supports Erlang versions up to 26.1.x.
RabbitMQ and Erlang/OTP Compatibility Matrix has more details on
Erlang version requirements for RabbitMQ.

Minimum Supported Erlang Version

As of 3.12.0, RabbitMQ requires Erlang 25. Nodes will fail to start on older Erlang releases.

Users upgrading from 3.11.x (or older releases) on Erlang 25 to 3.12.x on Erlang 26
(both RabbitMQ and Erlang are upgraded at the same time) must consult
the v3.12.0 release notes first.

Changes Worth Mentioning

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

Core Server

Bug Fixes

• Avoids a potential exception in the autoheal partition handler.

Contributed by @Ayanda-D.

GitHub issue: #9818

Enhancements

• raft.segment_max_entries is now validated to prevent the value from overflowing its 16-bit segment file field.
  Maximum supported value is now 65535.

GitHub issue: #9733

Shovel Plugin

Enhancements

• Significantly faster Shovel startup in environments where there are many of them (one thousand or more).

GitHub issue: #9796

AMQP 1.0 Erlang Client

Enhancements

• User-provided credentials are now obfuscated using an one-off key pair generated on node boot.
  This keeps sensitive client state information from being logged by the runtime exception logger.

GitHub issue: #9777

Dependency Upgrades

None in this release.

Source Code Archives

To obtain source code of the entire distribution, please download the archive named rabbitmq-server-3.12.8.tar.xz
instead of the source tarball produced by GitHub.