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https://issues.apache.org/jira/browse/LUCENE-2918?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Michael McCandless resolved LUCENE-2918.
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Resolution: Fixed
> IndexWriter should prune 100% deleted segs even in the NRT case
> ---------------------------------------------------------------
>
> Key: LUCENE-2918
> URL: https://issues.apache.org/jira/browse/LUCENE-2918
> Project: Lucene - Java
> Issue Type: Improvement
> Components: Index
> Reporter: Michael McCandless
> Assignee: Michael McCandless
> Priority: Minor
> Fix For: 3.2, 4.0
>
> Attachments: LUCENE-2918.patch
>
>
> We now prune 100% deleted segs on commit from IW or IR (LUCENE-2010),
> but this isn't quite aggressive enough, because in the NRT case you
> rarely call commit.
> Instead, the moment we delete the last doc of a segment, it should be
> pruned from the in-memory segmentInfos. This way, if you open an NRT
> reader, or a merge kicks off, or commit is called, the 100% deleted
> segment is already gone.
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