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HiveMQ Release

HiveMQ 4.9.8 Maintenance Release

by HiveMQ TeamJUN 6, 2023

The HiveMQ team is pleased to announce the availability of HiveMQ 4.9.8.

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

HiveMQ Enterprise MQTT Broker

  • Added listener type and port information to HiveMQ event log entries generated by SSL errors and ungraceful disconnects.
  • Fixed a race condition that could interfere with cluster state lookups and potentially cause delays in the application of cluster topology changes.
  • Fixed a race condition that could prevent correct adjustment of the overload protection levels when a node leaves the cluster.
  • Fixed a race condition that could cause an overloaded or temporarily sluggish node to be removed from the cluster unnecessarily.
  • Fixed reliability issues that arise when the process of a new node joining a cluster overlaps with the shutdown process of another node.
  • Fixed an issue that could cause queued packets to be incorrectly marked as expired in some rare cases.
  • Fixed an issue that some Rest API error responses were not in the expected JSON format.

HiveMQ Enterprise Extension for Kafka

  • Added a limit to restrict the number of warning log messages the extension generates when a transformer fails to forward a message.

HiveMQ Enterprise Security Extension

  • Fixed a wrong foreign key constraint in the rest_api_user_permissions table in the MySQL DDL script mysql_create.sql.

HiveMQ Swarm

  • Added a metric to HiveMQ Swarm's Commander to monitor the progress of the current scenario.
  • Added a metric to HiveMQ Swarm's Commander to monitor the amount of connected Agents.

Have a great day, The HiveMQ Team