> It's not really possible.
> Lucene must iterate over all of the hits before it knows for sure that
> it has the top sorted by any criteria (other than docid).
> A Collector is called for every hit as it happens, and thus one can't
> specify a sort order (sorting itself is actually implemented with a
> sorting Collector).

Ok, so the sort doesn't actually affect the order in which a searcher
iterates over an index, it just gets used by a TopDocsCollector to
sort hits as they come in.  I guess that makes sense.  Thanks!

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