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https://issues.apache.org/jira/browse/LUCENE-3878?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Robert Muir resolved LUCENE-3878.
---------------------------------

    Resolution: Fixed
    
> CheckIndex should check deleted documents too
> ---------------------------------------------
>
>                 Key: LUCENE-3878
>                 URL: https://issues.apache.org/jira/browse/LUCENE-3878
>             Project: Lucene - Java
>          Issue Type: Task
>    Affects Versions: 4.0
>            Reporter: Robert Muir
>             Fix For: 4.0
>
>         Attachments: LUCENE-3878.patch, LUCENE-3878.patch
>
>
> In 4.0 livedocs are passed down to the enums, thus deleted docs are not so 
> special.
> So I think checkindex should not pass the livedocs down to the enums when 
> checking,
> it should pass livedocs=null and check all the postings. It already does this 
> separately to 
> collect stats i think to compare against the term/collection statistics? But 
> we should
> just clean this up and only use one enum.
> For example LUCENE-3876 is a case where we were actually making a corrumpt 
> index,
> (a position was negative) but because the document in question was deleted, 
> CheckIndex 
> didn't detect this.
> This could have caused problems if someone just passed null for livedocs 
> (maybe they 
> are doing something where its not so important to take deletions into account)

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