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Posted to issues@lucene.apache.org by GitBox <gi...@apache.org> on 2022/09/20 08:44:20 UTC

[GitHub] [lucene] jpountz commented on issue #11791: cardinality estimation for query filters

jpountz commented on issue #11791:
URL: https://github.com/apache/lucene/issues/11791#issuecomment-1252033446

   The cheapest way to get an estimation of the "cost" of a filter is to run `Weight#scorerSupplier` to retrieve a `ScorerSupplier` and then `ScorerSupplier#cost` to get an estimation of the number of matches of this scorer on the given segment.


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