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rabbitmq-server/release-notes/3.7.24.md

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RabbitMQ 3.7.24

RabbitMQ 3.7.24 is a maintenance release. RabbitMQ 3.7.x series is supported through March 2020.

Erlang/OTP Compatibility Notes

Per the new Erlang version support policy in effect starting with January 2019, this release no longer supports Erlang/OTP 20.3. 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

Bug Fixes

  • Autoheal could fail to finish if one of its state transitions initiated by a remote node timed out.

    Contributed by @tomyouyou.

    GitHub issue: rabbitmq/rabbitmq-server#2209

  • Reduced scheduled GC activity in connection socket writer to one run per 1 GiB of data transferred, with an option to change the value or disable scheduled run entirely. More frequent binary heap GC runs seem unneccesary on Erlang 22.

    Contributed by Aleksander Nycz.

    GitHub issue: rabbitmq/rabbitmq-common#343

  • The node now can recover even if virtual host recovery terms file was corrupted.

    Contributed by @tomyouyou.

    GitHub issue: rabbitmq/rabbitmq-server#2195

  • Better error reporting in an edge case with classic queue leader replica election.

    Contributed by Ayanda Dube.

    GitHub issue: rabbitmq/rabbitmq-common#355

  • Fixed an incorrect return value in the internal queue data store module.

    Contributed by Sergey Loguntsov.

    GitHub issue: rabbitmq/rabbitmq-server#2221

  • Syslog client is now started even when Syslog logging is configured only for some log sinks.

    GitHub issue: rabbitmq/rabbitmq-server#2044

Enhancements

  • RabbitMQ nodes will now gracefully shutdown when receiving a SIGTERM or SIGQUIT signals. Previously the runtime would invoke a default handler that terminates the VM giving RabbitMQ no chance to execute its shutdown steps.

    In addition, SIGUSER1 and SIGUSR2 signals are ignored.

    GitHub issue: rabbitmq/rabbitmq-server#2222

  • Some proxy protocol errors are now logged at debug level. This reduces log noise in environments where TCP load balancers and proxies perform health checks by opening a TCP connection but never sending any data.

    GitHub issue: rabbitmq/rabbitmq-server#2204

Management and Management Agent Plugins

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-3.7.24.tar.xz.