How to purge event process data from the Solr database in EDR 6.x and higher.
curl "http://127.0.0.1:8080/solr/admin/cores?action=STATUS&wt=json&indexInfo=false&indent=true" | grep name
curl "http://localhost:8080/solr/admin/cores?action=UNLOAD&core=<core_name>"
curl "http://localhost:8080/solr/admin/cores?action=STATUS&indexInfo=true&indent=true&wt=json" | grep <core_name>
rm -rf /var/cb/data/solr5/cbevents/<core_name>