84 lines
2.9 KiB
Markdown
84 lines
2.9 KiB
Markdown
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RabbitMQ `3.9.9` 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 the latest Erlang 24 version, 24.1.2 at the time of release. [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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* Fixed an issue where node monitor could produce a false network partition when
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one of the cluster members was restarted
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GitHub issue: [#3631](https://github.com/rabbitmq/rabbitmq-server/pull/3631)
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* Message store resiliency improvements
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GitHub issue: [#3615](https://github.com/rabbitmq/rabbitmq-server/pull/3615)
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* Reduced log noise in certain scenarios where a new queue leader is elected
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GitHub issue: [#3628](https://github.com/rabbitmq/rabbitmq-server/pull/3628)
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* Queue leader rebalancing now logs less
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GitHub issue: [#3643](https://github.com/rabbitmq/rabbitmq-server/pull/3643)
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#### Enhancements
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* `cluster_formation.target_cluster_size_hint` is a new configuration setting that can be used to specify expected initial cluster size.
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This can be used by features, plugins or tools that expect a certain minimum number of clusters nodes
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to join during initial cluster formation
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GitHub issue: [#3635](https://github.com/rabbitmq/rabbitmq-server/pull/3635)
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### Prometheus Plugin
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#### Bug Fixes
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* TLS-enabled Prometheus endpoint listener port was not correctly stored internally
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GitHub issue: [#2975](https://github.com/rabbitmq/rabbitmq-server/issues/2975)
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### Management Plugin
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#### Bug Fixes
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* Persistent message count is now displayed correctly on individual queue pages
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GitHub issue: [#3598](https://github.com/rabbitmq/rabbitmq-server/pull/3598)
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### Consistent Hashing Exchange Plugin
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#### Bug Fixes
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* Corrected deletion of duplicate bindings between an exchange and a queue
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Contributed by @FalconerTC
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GitHub issue: [#3594](https://github.com/rabbitmq/rabbitmq-server/pull/3594)
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## Dependency Upgrades
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* Ra was [upgraded to `2.0.2`](https://github.com/rabbitmq/ra/compare/v2.0.0...v2.0.2)
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* Osiris was [upgraded to `1.2.3`](https://github.com/rabbitmq/osiris/compare/v1.2.2...v1.2.3)
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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-3.9.9.tar.xz`
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instead of the source tarball produced by GitHub.
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