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https://issues.apache.org/jira/browse/LUCENE-8609?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16722302#comment-16722302
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Mike Sokolov commented on LUCENE-8609:
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Thanks, [~simonw], I had already made the changes locally, and posted themas
well: https://github.com/mikemccand/luceneutil/pull/27
> Allow getting consistent docstats from IndexWriter
> --------------------------------------------------
>
> Key: LUCENE-8609
> URL: https://issues.apache.org/jira/browse/LUCENE-8609
> Project: Lucene - Core
> Issue Type: Improvement
> Affects Versions: master (8.0), 7.7
> Reporter: Simon Willnauer
> Priority: Major
> Fix For: master (8.0), 7.7
>
> Time Spent: 50m
> Remaining Estimate: 0h
>
> Today we have #numDocs() and #maxDoc() on IndexWriter. This is enough
> to get all stats for the current index but it's subject to concurrency
> and might return numbers that are not consistent ie. some cases can
> return maxDoc < numDocs which is undesirable. This change adds a
> getDocStats()
> method to index writer to allow fetching consistent numbers for these
> stats.
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