Github user ajs6f commented on the issue:
https://github.com/apache/jena/pull/335
This is a naive question, so feel free to answer it as briefly as it
deserves, but since for some instances reindexing may be a really considerable
amount of work, would it be useful/possible to include a very simple migrator
class that can strip out the no-longer-used fields and produce a new leaner
text index that could then be swapped in?---
