New schema change management code was introduced in hawkular-metrics 0.15.0. There were
some bugs that break upgrades. Upgrading with 0.15.0 and 0.16.0 will not work. A few
people have run into this. I have already submitted a PR with the fixes to be included in
the next release. The ticket for this is
https://issues.jboss.org/browse/HWKMETRICS-425
<
https://issues.jboss.org/browse/HWKMETRICS-425>.
- John