With multiple fields of the same name vs a single field I doubt you'd
be able to tell the difference in performance or matching or scoring
in normal use. There may be some matching/ranking effect if you are
looking at, say, span queries across the multiple fields.
Try it out and see what happens.
Using Lucene 3.
I know Lucene supports multiple occurrences of a field, and if one
searches on that field, all fields are checked for hits. One question I
have is if there is a performance difference between if all the data I
want to index is represented by a single field vs multiple fields of t
