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HiveMQ 4.9.15 Maintenance Release

by HiveMQ Team

The HiveMQ team is pleased to announce the availability of HiveMQ 4.9.15.

This maintenance release for the 4.9 series includes the following improvements:

HiveMQ Enterprise MQTT Broker

  • Improved non-blocking cluster transport for better cluster stability.
  • Adjusted cluster transport to improve scalability on machines with more than 16 CPU cores.
  • Increased stability of the cluster transport by improving the threading model.
  • Fixed an issue that could allow empty topics in MQTT 3 PUBLISH messages and MQTT 5 PUBLISH response messages.
  • Fixed an issue that could cause the client event history entry for a successful connection to include a session-present flag when no previous session exists.
  • Adjusted how JavaFileStore not found notifications are handled to avoid unnecessary feedback on the WARN log level.
  • Improved error handling in the internal executor service to facilitate debugging.

Have a great day, The HiveMQ Team

HiveMQ Team

Team HiveMQ shares deep expertise in MQTT, Industrial AI, IoT data streaming, Unified Namespace (UNS), and Industrial IoT protocols. Our blogs explore real-world challenges, practical deployment guidance, and best practices for building modern, reliable, and a secure data backbone on the HiveMQ platform, along with thought leadership shaping the future of the connected world.

We’re on a mission to build the Industrial AI Platform that transforms industrial data into real-time intelligence, actionable insights, and measurable business outcomes.

Our experts are here to support your journey. Have questions? We’re happy to help. Contact us.

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