HiveMQ 4.9.9 Maintenance Release

The HiveMQ team is pleased to announce the availability of HiveMQ 4.9.9.

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

HiveMQ Enterprise MQTT Broker

• Fixed a race condition that could cause inconsistent client session metrics and memory leaks in client session cleanups.
• Improved heartbeat-based failure detection between cluster nodes for increased reliability.
• Fine-tuned the message size calculation for QoS 0 PUBLISH messages to ensure optimal use of in-memory storage.
• Increased feedback in HiveMQ DEBUG log statements to improve the transparency of cluster state handling on JOIN/MERGE.
• Fixed an issue that could throw an exception that prevents the successful creation of a backup.
• Fixed an issue that could prevent a client from reauthenticating more than once.

HiveMQ Enterprise Security Extension

• Fixed an issue that could lead to a login failure when multiple pipelines use the same SQL realm.

HiveMQ Swarm

• Fixed an issue that could cause incomplete reporting of metrics from the Swarm Commander to InfluxDB.

Have a great day, The HiveMQ Team

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