waziqi89 commented on issue #15442:
URL: https://github.com/apache/lucene/issues/15442#issuecomment-3671734753

   Hi @dsmiley ! Thanks for the insights.
   We are the contributors to Yelp/nrtsearch. And we are using FVH in 
production to highlight a list of phrases with different boost values. 
Currently, it serves the purpose as we don't actually highlight on multi-terms 
nor span queries.
   
   Uhighlighter currently doesn't seem to be a good fit for migration because:
   1. query boost value is unsupported yet
   2. to highlight a phrase as a whole unit, weightMatch must be used. But we 
are afraid that there would be some highlight speed penalties because of it, as 
we are calling highlight() per document per field.
   
   We are happy to make contributions back to uhighlighter. But in regards to 
priority,  we can parallelize the work and make bug fixes in FVH at the same 
time: [PR](https://github.com/apache/lucene/pull/15434) 


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