HiveMQ 4.9.21 Maintenance Release
The HiveMQ team is pleased to announce the availability of HiveMQ 4.9.21.
This maintenance release for the 4.9 series includes the following improvements:
HiveMQ Enterprise MQTT Broker
- Fixed an issue that could cause an unnecessary error message to be logged when shutting down a node.
- Fixed an issue that could cause an inaccurate session expiry log statement to print when a client reconnects.
HiveMQ Enterprise Extension for Kafka
- Fixed an issue in the Kafka Dashboard of the HiveMQ Control Center that could generate spurious error log messages during a cluster restart.
- Fixed an issue that could cause unnecessarily high memory usage when using the Kafka Dashboard in the HiveMQ Control Center.
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.
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