Github user justinleet commented on the issue:
https://github.com/apache/metron/pull/995
@mmiklavc The main worry is I'm not honestly sure if that's exactly how it
works. I didn't dig into the caveats or any issues that we might hit with it.
I also don't know what constraints get placed on general polyfields in terms of
whether they get returned by that or not. Assuming it works, it would be
fairly clean. But that'll require a bit of research.---
