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https://issues.apache.org/jira/browse/LUCENE-3401?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Robert Muir resolved LUCENE-3401.
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Resolution: Fixed
Fix Version/s: flexscoring branch
> need to ensure that sims that use collection-level stats (e.g.
> sumTotalTermFreq) handle non-existent field
> ----------------------------------------------------------------------------------------------------------
>
> 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
> Fix For: flexscoring branch
>
> Attachments: LUCENE-3401.patch, 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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