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Posted to issues@lucene.apache.org by "jianping weng (Jira)" <ji...@apache.org> on 2022/05/03 13:37:00 UTC

[jira] [Updated] (LUCENE-10555) avoid repeated NumericLeafComparator setScorer calls

     [ https://issues.apache.org/jira/browse/LUCENE-10555?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

jianping weng updated LUCENE-10555:
-----------------------------------
    Summary: avoid repeated NumericLeafComparator setScorer calls  (was: avoid repeated NumericLeafComparator setScorer called )

> avoid repeated NumericLeafComparator setScorer calls
> ----------------------------------------------------
>
>                 Key: LUCENE-10555
>                 URL: https://issues.apache.org/jira/browse/LUCENE-10555
>             Project: Lucene - Core
>          Issue Type: Improvement
>            Reporter: jianping weng
>            Priority: Major
>
> ElasticSearch use CancellableBulkScorer to fast cancel long time query execution by dividing one segment docs to many small split docs. For every split docs, collector.setScorer(scorer) is called, then  NumericLeafComparator#setScorer is called. As a result, for one segment, NumericLeafComparator#setScorer is called many times. 
> Every time NumericLeafComparator#setScorer is called, the NumericLeafComparator#iteratorCost is reset to the Scorer.cost and increase many unnecessary  pointValues#intersect calls to get  competitive docs.



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