[jira] [Created] (SOLR-5454) Create collection of child scorers in BooleanScorer2 only once

["Andrey Kudryavtsev (JIRA)" <ji...@apache.org>]

Andrey Kudryavtsev created SOLR-5454:
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             Summary: Create collection of child scorers in BooleanScorer2 only once
                 Key: SOLR-5454
                 URL: https://issues.apache.org/jira/browse/SOLR-5454
             Project: Solr
          Issue Type: Improvement
            Reporter: Andrey Kudryavtsev
            Priority: Minor
             Fix For: 5.0


I use big hierarchical search query with boolean queries on different levels. After main search I do some post filtering and need to recursively visit scorer's tree using Scorer#getChildren() method. And I've got hotspot here - in BooleanScorer2#getChildren() new list of children scorers created and 
collected on every call i.e. on every matched document. I think we can eliminate this hotspot by creating this list once as children scorers won't change there state.



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