109 lines
3.9 KiB
Markdown
109 lines
3.9 KiB
Markdown
RabbitMQ `3.9.15` is a maintenance release in the `3.9.x` release series.
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Please refer to the **Upgrading to 3.9** section from [v3.9.0 release notes](https://github.com/rabbitmq/rabbitmq-server/releases/tag/v3.9.0) if upgrading from a version prior to 3.9.0.
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This release requires at least Erlang 23.2, and supports Erlang 24. [RabbitMQ and Erlang/OTP Compatibility Matrix](https://www.rabbitmq.com/which-erlang.html) has more details on Erlang version requirements for RabbitMQ.
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## Changes Worth Mentioning
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Release notes are kept under [rabbitmq-server/release-notes](https://github.com/rabbitmq/rabbitmq-server/tree/v3.9.x/release-notes).
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Contributors are encouraged to update them together with their changes. This helps with release automation and a more consistent release schedule.
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### Core Server
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#### Bug Fixes
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* Stream delivery rate could drop if concurrent stream consumers consumed in a way
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that made them reach the end of the stream often.
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GitHub issue: [#4371](https://github.com/rabbitmq/rabbitmq-server/pull/4371)
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* If a cluster that had streams enabled was upgraded with a jump of multiple
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patch releases, stream state could fail an upgrade.
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GitHub issue: [#4510](https://github.com/rabbitmq/rabbitmq-server/issues/4510)
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* Significantly faster queue re-import from [definitions](https://rabbitmq.com/definitions.html)
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on subsequent node restarts. Initial definition import still takes
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the same amount of time as before.
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GitHub issue: [#4538](https://github.com/rabbitmq/rabbitmq-server/pull/4538)
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* When a policy contained keys unsupported by a particular queue
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type, and later updated or superseded by a higher priority policy,
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effective optional argument list could become inconsistent (policy
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would not have the expected effect).
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Kudos to @jaroslaw-bochniak for providing very detailed reproduction steps.
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GitHub issue: [#4463](https://github.com/rabbitmq/rabbitmq-server/pull/4463)
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* Priority queues could run into an exception in some cases.
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Contributed by @luos and @olikasg.
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GitHub issue: [#4405](https://github.com/rabbitmq/rabbitmq-server/issues/4405)
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* Maintenance mode could run into a timeout during queue leadership transfer.
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Contributed by @felixhuettner.
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GitHub issue: [#4468](https://github.com/rabbitmq/rabbitmq-server/pull/4468)
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### Prometheus Plugin
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#### Bug Fixes
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* Prometheus collector could run into an exception early on node's
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schema database sync.
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GitHub issue: [#4376](https://github.com/rabbitmq/rabbitmq-server/pull/4376)
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### Management Plugin
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#### Bug Fixes
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* Connection data transfer rate units were incorrectly displayed when
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rate was less than 1 kiB per second.
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Contributed by @zgabi.
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GitHub issue: [#4523](https://github.com/rabbitmq/rabbitmq-server/issues/4523)
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* `rabbitmqadmin` now correctly loads TLS-related keys from its configuration file.
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Contributed by @fwolfsjaeger.
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GitHub issue: [#4408](https://github.com/rabbitmq/rabbitmq-server/pull/4408)
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* Corrected a help message for node memory usage tool tip.
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Contributed by @etc-crontab.
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GitHub issue: [#4493](https://github.com/rabbitmq/rabbitmq-server/issues/4493)
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### LDAP Plugin
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#### Enhancements
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* More Erlang 24.3's `eldap` library compatibility improvements.
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GitHub issue: [#4448](https://github.com/rabbitmq/rabbitmq-server/pull/4448)
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## Dependency Upgrades
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* `ra` upgraded [from `2.0.4` to `2.0.9`](https://github.com/rabbitmq/ra/compare/v2.0.4...v2.0.9)
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* `prometheus` upgraded from [`4.8.1` to `4.8.2`](https://github.com/deadtrickster/prometheus.erl/compare/06425c21a39c1564164f1cc3fe5bdfa8b23b1f78...v4.8.2)
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* `eetcd` upgraded from [`0.3.3` to `0.3.5`](https://github.com/zhongwencool/eetcd/compare/v0.3.3...v0.3.5)
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## Source Code Archives
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To obtain source code of the entire distribution, please download the archive named `rabbitmq-server-3.9.15.tar.xz`
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instead of the source tarball produced by GitHub.
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