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https://issues.apache.org/jira/browse/LUCENE-8459?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Michael McCandless resolved LUCENE-8459.
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Resolution: Fixed
> Add SearcherTaxonomyManager constructor taking already opened readers
> ---------------------------------------------------------------------
>
> Key: LUCENE-8459
> URL: https://issues.apache.org/jira/browse/LUCENE-8459
> Project: Lucene - Core
> Issue Type: Bug
> Components: modules/facet
> Reporter: Michael McCandless
> Assignee: Michael McCandless
> Priority: Major
> Fix For: 7.5, master (8.0)
>
> Attachments: LUCENE-8459.patch
>
>
> Today it either takes {{IndexWriter}} or {{Directory}} (and it opens its own
> {{DirectoryReader}}s) ... but I'd like to pass in my own reader so that e.g.
> I can use a {{FilterDirectoryReader}}. This is useful e.g. for tracking fun
> low level stats like how many term dictionary lookups your queries are doing.
> My first attempt was to do my wrapping in {{SearcherFactory}}, but
> {{SearcherManager}} gets angry when you do that ("SearcherFactory must wrap
> exactly the provided reader").
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