[GitHub] [lucene] jpountz commented on pull request #477: LUCENE-10263: Implement Weight.count() on NormsFieldExistsQuery

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jpountz commented on pull request #477:
URL: https://github.com/apache/lucene/pull/477#issuecomment-979286452


   I wonder if there's a corner case with documents that have a field value that produces no tokens. From what I remember such values produce a norm value of 0 (which was partially done to give NormsFiledsExistsQuery an intuitive behavior, since users would consider that a field exists if it has a value, regardless of whether it produces terms) while they wouldn't count as part of `Terms#getDocCount` which only includes documents that have at least one term. 


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