Github user merrimanr commented on the issue:
https://github.com/apache/metron/pull/945
When looking at the reference guide, it's not obvious to me what the
differences are between Point and Trie fields as it relates to our use case.
Point field types for the corresponding Trie field types don't exist in 5.5
anyways so I suspect it's a moot point if supporting 5.5 is desirable.
Yes this has been tested with the HDP Search MPack (Solr 5.5.2) and the
manually installed Solr 6.6.2.---
