Github user justinleet commented on the issue:
https://github.com/apache/metron/pull/995
@merrimanr Re: dynamic fields. Looks like you can get them in 6.6, but
possibly not 5.5
https://lucene.apache.org/solr/6_6_0/solr-solrj/org/apache/solr/client/solrj/response/LukeResponse.html#getDynamicFieldInfo--
http://lucene.apache.org/solr/5_5_2/solr-solrj/org/apache/solr/client/solrj/response/LukeResponse.html#getFieldInfo()
Not sure what it returns, whether it's the actual fields or just what the
schema defines though.---
