This version of the library contains several improvements and it's compatible with Java 9.
However, starting from 4.0.0 metrics-ganglia is no longer available, which means that if we upgrade we will have to remove the corresponding SolrGangliaReporter.
Such change is not back-compatible, so I see the following options:
- wait with the upgrade until 8.0
- upgrade and remove SolrGangliaReporter and describe this in the release notes.
Any other suggestions?