jpountz opened a new pull request, #14032:
URL: https://github.com/apache/lucene/pull/14032

   This PR changes the following:
    - As much work as possible is moved from `nextDoc()`/`advance()` to 
`nextPosition()`. This helps only pay the overhead of reading positions when 
all query terms agree on a candidate.
    - Frequencies are read lazily. Again, this helps in case a document is 
needed in a block, but clauses do not agree on a common candidate match, so 
frequencies are never decoded.
    - A few other minor optimizations.


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