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https://issues.apache.org/jira/browse/LUCENE-2809?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Michael McCandless updated LUCENE-2809:
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Fix Version/s: 3.1
> IndexWriter.numDocs doesn't take into account applied but not flushed deletes
> -----------------------------------------------------------------------------
>
> Key: LUCENE-2809
> URL: https://issues.apache.org/jira/browse/LUCENE-2809
> Project: Lucene - Java
> Issue Type: Bug
> Components: Index
> Reporter: Michael McCandless
> Assignee: Michael McCandless
> Priority: Minor
> Fix For: 3.1, 4.0
>
>
> The javadoc states that buffered deletes are not taken into account and so
> you must call commit first.
> But, if you do that, and you're using CMS, and you're unlucky enough to have
> a background merge commit just after you call commit but before you call
> .numDocs, you can still get a wrong count back.
> The fix is trivial -- numDocs should also consult any pooled readers for
> their current del count.
> This is causing an intermittent failure in the new TestNRTThreads.
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