Michael McCandless created LUCENE-4395:
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Summary: BooleanScorer/2 should not call .score() on MUST_NOT
clauses
Key: LUCENE-4395
URL: https://issues.apache.org/jira/browse/LUCENE-4395
Project: Lucene - Core
Issue Type: Improvement
Reporter: Michael McCandless
In working on LUCENE-4366 I realized we are doing this today (and then Robert
reminded me BS2 is also doing it), which is really quite silly.
Seems like a fast fix would be to wrap such clauses in ConstantScoreQuery ...
but further improvements are possible with BooleanScorer:
* Don't add the bucket to the valid list
* If the current clause is not prohibited, but this document was already
marked prohibited from a previous clause, then do not call score (BS2 could do
this as well)
I don't think I'll have near-term time to dig on this so feel free to take it
if you are inspired!
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