need to ensure that sims that use collection-level stats (e.g.
sumTotalTermFreq) handle non-existent field
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Key: LUCENE-3401
URL: https://issues.apache.org/jira/browse/LUCENE-3401
Project: Lucene - Java
Issue Type: Bug
Affects Versions: flexscoring branch
Reporter: Robert Muir
Attachments: LUCENE-3401.patch
Because of things like queryNorm, unfortunately similarities have to handle the
case where they are asked to computeStats() for a term, where the field does
not exist at all.
(Note they will never have to actually score anything, but unless we break how
queryNorm works for TFIDF, we have to deal with this case).
I noticed this while doing some benchmarking, so i created a test to test some
cases like this across all the sims.
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