2023-10-28 13:04:34 +08:00
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RabbitMQ `3.12.8` is a maintenance release in the `3.12.x` [release series](https://www.rabbitmq.com/versions.html).
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Please refer to the upgrade section from the [3.12.0 release notes](https://github.com/rabbitmq/rabbitmq-server/releases/tag/v3.12.0)
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if upgrading from a version prior to 3.12.0.
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This release requires Erlang 25 and supports Erlang versions up to `26.1.x`.
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[RabbitMQ and Erlang/OTP Compatibility Matrix](https://www.rabbitmq.com/which-erlang.html) has more details on
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Erlang version requirements for RabbitMQ.
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### Minimum Supported Erlang Version
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As of 3.12.0, RabbitMQ requires Erlang 25. Nodes **will fail to start** on older Erlang releases.
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Users upgrading from 3.11.x (or older releases) on Erlang 25 to 3.12.x on Erlang 26
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(both RabbitMQ *and* Erlang are upgraded at the same time) **must** consult
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the [v3.12.0 release notes](https://github.com/rabbitmq/rabbitmq-server/releases/tag/v3.12.0) first.
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## Changes Worth Mentioning
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Release notes can be found on GitHub at [rabbitmq-server/release-notes](https://github.com/rabbitmq/rabbitmq-server/tree/v3.12.x/release-notes).
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### Core Server
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#### Bug Fixes
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* Avoids a potential exception in the `autoheal` partition handler.
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Contributed by @Ayanda-D.
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GitHub issue: [#9818](https://github.com/rabbitmq/rabbitmq-server/pull/9818)
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#### Enhancements
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* `raft.segment_max_entries` is now validated to prevent the value from overflowing its 16-bit segment file field.
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2023-11-01 00:33:22 +08:00
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Maximum supported value is now `65535`.
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2023-10-28 13:04:34 +08:00
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GitHub issue: [#9733](https://github.com/rabbitmq/rabbitmq-server/issues/9733)
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### Shovel Plugin
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#### Enhancements
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* Significantly faster Shovel startup in environments where there are many of them (one thousand or more).
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GitHub issue: [#9796](https://github.com/rabbitmq/rabbitmq-server/pull/9796)
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### AMQP 1.0 Erlang Client
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#### Enhancements
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* User-provided credentials are now obfuscated using an one-off key pair generated on node boot.
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This keeps sensitive client state information from being logged by the runtime exception logger.
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GitHub issue: [#9777](https://github.com/rabbitmq/rabbitmq-server/pull/9777)
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## Dependency Upgrades
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None in this release.
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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-3.12.8.tar.xz`
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instead of the source tarball produced by GitHub.
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