rabbitmq/rabbitmq-server v4.0.7

RabbitMQ 4.0.7

on GitHub

RabbitMQ 4.0.7 is a maintenance release in the 4.0.x release series.

Starting June 1st, 2024, community support for this series will only be provided to regularly contributing users and those
who hold a valid commercial support license.

It is strongly recommended that you read 4.0 release notes
in detail if upgrading from a version prior to 4.0.0.

Minimum Supported Erlang Version

This release requires Erlang 26 and supports Erlang versions up to 27.2.x.
RabbitMQ and Erlang/OTP Compatibility Matrix has more details on
Erlang version requirements for RabbitMQ.

Nodes will fail to start on older Erlang releases.

Changes Worth Mentioning

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

Core Broker

Bug Fixes

• Classic queue message store did not remove segment files with large messages (over 4 MB) in some cases.

  GitHub issue: #13430

• A node with Khepri enabled would fail to start if its metadata store contained an exclusive queue
  with at least one binding.

  GitHub issues: #13352, #13394

Enhancements

• Reduced memory usage and GC pressure for workloads where large (4 MB or greater) messages were published to classic queues.

  Contributed by @gomoripeti.

  GitHub issue: #13375

CLI Tools

Deprecations

• rabbitmq-streams set_stream_retention_policy is now a no-op.

  It was a leftover from the early days of streams. The modern and optimal way of configuring
  stream retention is via a policy.

  GitHub issue: #13358

Prometheus Plugin

Enhancements

• New labels make it possible to differentiate between the metrics with the same name scraped from the aggregated
  metric endpoint and the per-object metric endpoint.

  GitHub issue: #13239

Management Plugin

Bug Fixes

• Who help tooltips were not updated for 4.0.x.

  GitHub issue: #13357

Enhancements

• Consumer count is a new column that can be enabled for the channels table on the tab of the same name.

  Contributed by @gomoripeti.

  GitHub issue: #13258

Caching Authentication and Authorization Backend Plugin

Enhancements

• rabbitmqctl clear_auth_backend_cache is a new command that clears the cache maintained by the plugin.

Dependency Changes

• ra was upgraded to 2.15.2

Source Code Archives

To obtain source code of the entire distribution, please download the archive named rabbitmq-server-4.0.7.tar.xz
instead of the source tarball produced by GitHub.