[jira] [Resolved] (SOLR-15057) avoid unnecessary object retention in FacetRangeProcessor

["Christine Poerschke (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SOLR-15057?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Christine Poerschke resolved SOLR-15057.
----------------------------------------
    Fix Version/s: master (9.0)
                   8.8
       Resolution: Fixed

> avoid unnecessary object retention in FacetRangeProcessor
> ---------------------------------------------------------
>
>                 Key: SOLR-15057
>                 URL: https://issues.apache.org/jira/browse/SOLR-15057
>             Project: Solr
>          Issue Type: Task
>            Reporter: Christine Poerschke
>            Assignee: Christine Poerschke
>            Priority: Minor
>             Fix For: 8.8, master (9.0)
>
>          Time Spent: 20m
>  Remaining Estimate: 0h
>
>  * The (private) {{doSubs}} method is a no-op if there are no sub-facets.
>  * The (private) {{intersections}} and {{filters}} arrays are only used by the {{doSubs}} method.
>  * The (private) {{rangeStats}} method currently always populates the {{intersections}} and {{filters}} arrays, even when nothing actually subsequently uses them.
>  * If {{rangeStats}} only populated the {{intersections}} array when it's actually needed then the {{DocSet intersection}} object would remain local in scope and hence the garbage collector could collect it earlier.
> [https://github.com/apache/lucene-solr/blob/releases/lucene-solr/8.7.0/solr/core/src/java/org/apache/solr/search/facet/FacetRangeProcessor.java#L531-L555]



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