Question
Upgrading HiveMQ version from 3.x to 4.x and want to upgrade hivemq-sys-topic-plugin-3.0.0.jar, jvm-metrics-plugin-3.1.0.jar. How to do that with HiveMQ 4.
Answer
HiveMQ 4 by default exposes all JMX metrics on remote port 9010 and you can monitor them using Monitoring tools. Hence jvm-metrics-plugin-3.1.0.jar plugin is deprecated and will not be required anymore.
HiveMQ 4 does not support $SYS topics due to security reasons, hence hivemq-sys-topic-plugin-3.0.0.jar