Github user cestella commented on the issue:
https://github.com/apache/metron/pull/995
I'm sure you did this, @merrimanr, but I googled your error and ran upon
[this](https://stackoverflow.com/questions/44375034/solr-docvaluesfield-appears-more-than-once-in-this-document-solr-6-5).
Are we certain that we're not in this situation where a simple migration to
`solr.LatLonPointSpatialField` isn't the solution?---
