Project: RabbitMQ (App Definition and Development / Streaming & Messaging)
File: 3.12.11.md

RabbitMQ `3.12.11` is a maintenance release in the `3.12.x` . Please refer to the upgrade section from the if upgrading from a version prior to 3.12.0. This release requires Erlang 25 and supports Erlang versions up to `26.1.x`. has more details on Erlang version requirements for RabbitMQ. As of 3.12.0, RabbitMQ requires Erlang 25. Nodes will fail to start on older Erlang releases. Users upgrading from 3.11.x (or older releases) on Erlang 25 to 3.12.x on Erlang 26 (both RabbitMQ and Erlang are upgraded at the same time) must consult the first. Release notes can be found on GitHub at . Quorum queue declared when one of cluster nodes was down could trigger connection exceptions. GitHub issue: Avoids a rare exception that could stop TCP socket writes on a client connection. GitHub issues: , `queuedeleted` and `queuecreated` now include queue type as a module name, and not an inconsistent (with the other queue and stream types) value `classic`. GitHub issue: Definition files that are virtual host-specific cannot be imported on boot. Such files will now be detected early and the import process will terminate after logging a more informative message. Previously the import process would run into an obscure exception. GitHub issues: , Several AMQP 1.0 application properties are now more correctly converted to AMQP 0-9-1 headers by cross-protocol Shovels. The priority property now populates an AMQP 1.0 header with the same name, per AMQP 1.0 spec. This is a potentially breaking change. Contributed by @luos (Erlang Solutions). GitHub issues: , Metric label values now escape certain non-ASCII characters. Contributed by @gomoripeti (CloudAMQP). GitHub issue: Avoids an exception when an MQTT client that used a QoS 0 subscription reconnects and its original connection node is down. GitHub issue: Avoids an exception when an MQTT client connection was force-closed via the HTTP API. GitHub issue: Certain CLI commands could not be run in a shell script loop, unless the script explicitly redirected standard input. GitHub issue: `rabbitmq-diagnostics cluster_status` now responds much quicker when a cluster node has gone down, were shut down, or otherwise has become unreachable by the rest of the cluster. GitHub issue: Reverted a change to `DELETE /api/queues/{vhost}/{name}` that allowed removal of exclusive queues and introduced unexpected side effects. GitHub issue: `DELETE /api/policies/{vhost}/{policy}` returned a 500 response instead of a 404 one when target virtual host did not exist. GitHub issue: Avoid log noise when an HTTP API request is issued against a booting or very freshly booted node. Contributed by @gomoripeti (CloudAMQP). GitHub issue: HTTP API endpoints that involves contacting multiple nodes now respond much quicker when a cluster node has gone down, were shut down, or otherwise has become unreachable by the rest of the cluster GitHub issue: Definition exported for just one virtual host cannot be imported at node boot time. Now such files are detected early with a clear log message and immediate node boot process termination. GitHub issues: , Type spec and test corrections. Contributed by @illotum (AWS). GitHub issue: `osiris` was updated to To obtain source code of the entire distribution, please download the archive named `rabbitmq-server-3.12.11.tar.xz` instead of the source tarball produced by GitHub.