4.1.5 release notes

Author: michaelklishin

release-notes/4.1.5.md

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+## RabbitMQ 4.1.5
+
+RabbitMQ `4.1.5` is a maintenance release in the `4.1.x` [release series](https://www.rabbitmq.com/release-information).
+
+It is **strongly recommended** that you read [4.1.0 release notes](https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.1.0)
+in detail if upgrading from a version prior to `4.1.0`.
+
+
+### Minimum Supported Erlang Version
+
+[RabbitMQ and Erlang/OTP Compatibility Matrix](https://www.rabbitmq.com/docs/which-erlang) has more details on Erlang version requirements for RabbitMQ.
+
+Nodes **will fail to start** on older Erlang releases.
+
+
+## Changes Worth Mentioning
+
+Release notes can be found on GitHub at [rabbitmq-server/release-notes](https://github.com/rabbitmq/rabbitmq-server/tree/v4.1.x/release-notes).
+
+
+### Core Server
+
+#### Bug Fixes
+
+ * Classic queues could run into a rare message store exception that resuulted in
+   a loss of a few messages.
+
+   Special kudos to the contributors who have spent a very significant amount of time
+   reproducing and debugging the issue: @lhoguin @lukebakken @trvrnrth @gomoripeti
+
+   GitHub issues: [#14181](https://github.com/rabbitmq/rabbitmq-server/discussions/14181), [#14576](https://github.com/rabbitmq/rabbitmq-server/pull/14576)
+
+ * Messages routed to quorum queues during or immediately before a network partition,
+   in some cases were not re-republished internally in certain cases.
+
+   GitHub issue: [#14589](https://github.com/rabbitmq/rabbitmq-server/pull/14589)
+
+ * Quorum queues with disabled [poison message handling](https://www.rabbitmq.com/docs/quorum-queues#poison-message-handling)
+   (an unlimited number of redeliveries, which is **not** a recommended practice) could accumulate
+   a significant number of Raft log segment files.
+
+   GitHub issues: [#14202](https://github.com/rabbitmq/rabbitmq-server/issues/14202), [#14458](https://github.com/rabbitmq/rabbitmq-server/pull/14458)
+
+### Streams
+
+#### Bug Fixes
+
+ * Streams declaration response was missing a leader field when the stream was declared via AMQP 1.0 or 0.9.1
+   (that is, not the RabbitMQ Stream Protocol).
+
+   GitHub issue: [#14476](https://github.com/rabbitmq/rabbitmq-server/pull/14476)
+
+### CLI Tools
+
+#### Bug Fixes
+
+ * Fixes JSON formatting of cluster nodes produced by `rabbitmq-diagnostics status --formatter json`
+
+   GitHub issue: [#14509](https://github.com/rabbitmq/rabbitmq-server/issues/14509)
+
+### Shovel Prometheus Plugin
+
+#### Bug Fixes
+
+ * Requesting shovel status via Prometheus at a specific moment resulted in an exception
+   because the plugin did not consider a highly transient starting state.
+
+   GitHub issue: [#14481](https://github.com/rabbitmq/rabbitmq-server/pull/14481)