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rabbitmq-server/release-notes/3.7.25.md

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RabbitMQ 3.7.25

RabbitMQ 3.7.25 is a maintenance release. It focuses on bug fixes and usability improvements.

This is the last generally supported 3.7.x release. RabbitMQ 3.7.x series are now covered by the limited extended support policy.

Please consider upgrading to RabbitMQ 3.8.x.

Erlang/OTP Compatibility Notes

This release no longer supports Erlang/OTP 20.3. Previously recent 3.7.x nodes could start on Erlang 20.3 and to some extent tested on it despite the Erlang 21.3+ requirements in release notes and documentation.

Starting with this release, 21.3+ is a hard requirement enforced in the code to ensure forward compatibility with Erlang 23.

Make sure a supported Erlang version is used before upgrading. Provisioning Latest Erlang Releases explains what package repositories and tools can be used to provision latest patch versions of Erlang 21.3.x and 22.x.

Compatibility Notes

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.

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.

Changes

Core Server

Enhancements

  • Erlang 20.3 and earlier version support has been completely removed after months of being documented as unsupported. This release, however, gains Erlang 23.0 forward compatibility.

    GitHub issue: rabbitmq/rabbitmq-server#2269

Management Plugin

Enhancements

  • More frequent garbage collection by stats DB cache processes in environments where HTTP API queries produced large data sets.

    GitHub issue: rabbitmq/rabbitmq-management#788

  • rabbitmqadmin binding deletion now defaults to the same property key value as binding creation.

    Contributed by Ivan Kaloyanov.

    GitHub issue: rabbitmq/rabbitmq-management#779

Bug Fixes

Federation Plugin

Enhancements

  • Internal resources cleanup is now more selective on abnormal link termination. A new upstream parameter, resource-cleanup-mode, can be set to "never" used to prevent internal queues from being deleted by exchange federation links on termination. Use this when data safety is more important than protection from resource leaks. It then will be up to the operator to make sure such resources are periodically deleted or use a suitable TTL.

    GitHub issue: rabbitmq/rabbitmq-federation#105

Shovel Management Plugin

Bug Fixes

  • Shovels are now correctly removed even when deletion commands are executed against a different node (not the one on which the target Shovel has been created).

    GitHub issue: rabbitmq/rabbitmq-shovel#68

Trust Store Plugin

Enhancements

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 rabbitmq-server-3.7.25.tar.xz.