Initial 3.10.12 release notes

release-notes/3.10.12.md

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+RabbitMQ `3.10.12` 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
+
+#### Enhancements
+
+ * Quorum queues are now more resilient to WAL log growth with workloads that
+   involve clients that register a consumer and then close the channel
+   or connection without ever consuming any deliveries or cancelling
+   the consumer.
+
+   GitHub issue: [#6447](https://github.com/rabbitmq/rabbitmq-server/issues/6447)
+
+#### Bug Fixes
+
+ * When a node encouters an invalid `definitions.local.file` on boot,
+   it will refuse to start instead of ignoring the file.
+
+   GitHub issue: [#2610](https://github.com/rabbitmq/rabbitmq-server/issues/2610)
+
+ * Fixed a type analyzer definition.
+
+   Contributed by @illotum (AWS).
+
+   GitHub issue: [#6401](https://github.com/rabbitmq/rabbitmq-server/pull/6401)
+
+
+### CLI Tools
+
+#### Enhancements
+
+ * Queue info keys now support more inclusive property names related
+   to (deprecated) classic mirrored queues. For example, `mirror_pids`
+   can now be used instead of `slave_pids`.
+
+   Contributed by @illotum (AWS).
+
+   GitHub issue: [#2635](https://github.com/rabbitmq/rabbitmq-server/issues/2635)
+
+ * `rabbitmq-diagnostics memory_breakdown` now executes significantly more
+   efficient in environments with a large number (say, tens or hundreds of thousands) of quorum queues.
+   Two orders of magnitude more efficient, in fact.
+
+   GitHub issue: [#6388](https://github.com/rabbitmq/rabbitmq-server/issues/6388)
+
+#### Bug Fixes
+
+ * Definition export in JSON failed on nodes that used `definitions.skip_if_unchanged`.
+
+   GitHub issue: [#6424](https://github.com/rabbitmq/rabbitmq-server/issues/6424)
+
+ * Using quorum queue-specific commands on streams now results in clearer error messages.
+
+   Contributed by @gomoripeti (CloudAMQP).
+
+   GitHub issue: [#6488](https://github.com/rabbitmq/rabbitmq-server/pull/6488)
+
+
+### LDAP Plugin
+
+#### Bug Fixes
+
+ * LDAP server password could end up in the logs in certain types of exceptions.
+
+   Contributed by @SimonUnge (AWS).
+
+   GitHub issue: [#4842](https://github.com/rabbitmq/rabbitmq-server/issues/4842)
+
+
+### STOMP Plugin
+
+#### Enhancements
+
+  * `x-max-age` [stream setting](https://rabbitmq.com/streams.html) now can be set
+    by STOMP clients via a header.
+
+    GitHub issue: [#5003](https://github.com/rabbitmq/rabbitmq-server/issues/5003)
+
+
+## Source Code Archives
+
+To obtain source code of the entire distribution, please download the archive named `rabbitmq-server-3.10.12.tar.xz`
+instead of the source tarball produced by GitHub.