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3.10.10 release notes

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Michael Klishin 2022-10-18 11:46:07 +04:00
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RabbitMQ `3.10.10` is a maintenance release in the `3.10.x` [release series](https://www.rabbitmq.com/versions.html).
Please refer to the upgrade section from [v3.10.0 release notes](https://github.com/rabbitmq/rabbitmq-server/releases/tag/v3.10.0)
if upgrading from a version prior to 3.10.0.
This release requires Erlang 24.2 and supports Erlang 25.
[RabbitMQ and Erlang/OTP Compatibility Matrix](https://www.rabbitmq.com/which-erlang.html) has more details on
Erlang version requirements for RabbitMQ.
### Minimum Supported Erlang Version
Erlang 23 support has reached its [end of support](https://www.rabbitmq.com/which-erlang.html).
This release of RabbitMQ requires Erlang 24.2 or later versions. Nodes **will fail to start** on older Erlang releases.
Erlang 25 is recommended: it offers much improved performance on ARM64 architectures, [profiling with flame graphs](https://blog.rabbitmq.com/posts/2022/05/flame-graphs/)
across all architectures, and the most recent TLS 1.3 implementation.
## Changes Worth Mentioning
Release notes can be found on GitHub at [rabbitmq-server/release-notes](https://github.com/rabbitmq/rabbitmq-server/tree/v3.10.x/release-notes).
### Core Server
#### Bug Fixes
* Partially reverts an unsafe inter-node communication [optimization](https://github.com/rabbitmq/rabbitmq-server/pull/3865) that could affect
classic mirrored queue operation ordering.
Kudos to @bording for providing an automated way to reproduce the issue.
GitHub issue: [#6115](https://github.com/rabbitmq/rabbitmq-server/issues/6115)
* Classic mirrored queue leader replica issued to much credit to follower replicas,
resulting in an uneven load and memory footprint between them.
GitHub issue: [#6110](https://github.com/rabbitmq/rabbitmq-server/pull/6110)
* Intra-cluster communication link metric collector could run into an exception when
peer connection has just been re-established, e.g. after a peer node restart.
GitHub issue: [#6127](https://github.com/rabbitmq/rabbitmq-server/pull/6127)
### MQTT Plugin
#### Bug Fixes
* When a node was [put into maintenance mode](https://www.rabbitmq.com/upgrade.html#maintenance-mode), it closed all MQTT client connections
cluster-wide instead of just local client connections.
GitHub issue: [#6108](https://github.com/rabbitmq/rabbitmq-server/pull/6108)
## Dependency Upgrades
None in this release.
## Source Code Archives
To obtain source code of the entire distribution, please download the archive named `rabbitmq-server-3.10.10.tar.xz`
instead of the source tarball produced by GitHub.