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RabbitMQ 3.9.1

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@rabbitmq-ci rabbitmq-ci released this 30 Jul 15:23

RabbitMQ 3.9.1 is a maintenance release in the 3.9.x release series. This is what changed since v3.9.0.

Please refer to the Upgrading to 3.9 section from v3.9.0 release notes if you are upgrading from a version prior to 3.9.0.

This release requires at least Erlang 23.2, and supports the latest Erlang 24 version, 24.0.5 at the time of release. RabbitMQ and Erlang/OTP Compatibility Matrix has more details on Erlang version requirements for RabbitMQ.

Changes Worth Mentioning

Release notes are kept under rabbitmq-server/release-notes.
Contributors are encouraged to update them together with their changes. This helps with release automation and more
consistent release schedule.

Core Server

Bug Fixes

  • Clients that used global QoS prefetch (deprecated as of 3.9.0) ran into an exception when acknowledging deliveries.

    GitHub issue: #3230

  • Improved resiliency of stream coordinator in certain conditions.

    GitHub issues: #3176, #3170

  • Nodes failed to start when hostname contained non-ASCII (broader Unicode) characters.

    GitHub issue: #3239

CLI Tools

Bug Fixes

  • rabbitmq-diagnostics stream_status failed with an exception when the --tracking option was used.

    GitHub issue: #3229

  • rabbitmq-diagnostics stream_status used an outdated documentation guide link.

    GitHub issue: #3231

RabbitMQ Erlang Client

Bug Fixes

  • New releases of the client are again published to

    GitHub issue: #3247

  • connection_timeout was adjusted to avoid a confusing warning.

    GitHub issue: #3232 contributed by @britto

  • Corrected a typo in direct connection net tick time adjustment.

    GitHub issue: #3233 contributed by @britto