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https://issues.apache.org/jira/browse/LUCENE-8040?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16253476#comment-16253476
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ASF subversion and git services commented on LUCENE-8040:
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Commit af2b903f65e4451838fb3e93511329acec30a2a1 in lucene-solr's branch
refs/heads/master from [~dsmiley]
[ https://git-wip-us.apache.org/repos/asf?p=lucene-solr.git;h=af2b903 ]
LUCENE-8040: optimize IndexSearcher.collectionStatistics
> Optimize IndexSearcher.collectionStatistics
> -------------------------------------------
>
> Key: LUCENE-8040
> URL: https://issues.apache.org/jira/browse/LUCENE-8040
> Project: Lucene - Core
> Issue Type: Improvement
> Components: core/search
> Reporter: David Smiley
> Assignee: David Smiley
> Fix For: 7.2
>
> Attachments: LUCENE-8040.patch, LUCENE-8040.patch, MyBenchmark.java,
> lucenecollectionStatisticsbench.zip
>
>
> {{IndexSearcher.collectionStatistics(field)}} can do a fair amount of work
> because with each invocation it will call {{MultiFields.getTerms(...)}}. The
> effects of this are aggravated for queries with many fields since each field
> will want statistics, and also aggravated when there are many segments.
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