jimczi commented on issue #854: Shared PQ Based Early Termination for Concurrent Search URL: https://github.com/apache/lucene-solr/pull/854#issuecomment-530504547 I think we're talking of different approaches, hence the confusion. It is correct that we can start setting the minimum score when the global count of document that we collected reaches the requested size but if the local pqs are not full you can only use the minimum minimum score. So the bottom score of the minimum scores. Requiring a queue to be filled completely before publishing a minimum score allows to use the maximum minimum score among the slices that have a full pq. We can mix the two approaches, switching from the minimum minimum to the maximum minimum when pqs are filled but I wonder if this is really needed since topN is a small value ? Said differently I wonder if checking the global minimum score before a single pq is filled is a premature optimization ?
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