PRs for jdg-6.3.x and jdg-6.4.x available: https://github.com/infinispan/jdg/pull/249 https://github.com/infinispan/jdg/pull/250
I can see dramatical performance improvement for some queries: https://jenkins.mw.lab.eng.bos.redhat.com/hudson/job/jdg-radargun-perf-query-text/lastSuccessfulBuild/artifact/results/html/index.html (note that Infinispan here is presented as without the improvements)