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From "Michael McCandless (JIRA)" <j...@apache.org>
Subject [jira] Resolved: (LUCENE-325) [PATCH] new method expungeDeleted() added to IndexWriter
Date Mon, 11 Feb 2008 20:36:08 GMT

     [ https://issues.apache.org/jira/browse/LUCENE-325?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Michael McCandless resolved LUCENE-325.
---------------------------------------

    Resolution: Fixed

I just committed this.  Thanks John!  And sorry for the looooong
delay.

I also added an "these APIs are experimental" warning on top of
MergePolicy and MergeScheduler (which I should have done before
2.3 :(, though I don't expect alot of usage of these).


> [PATCH] new method expungeDeleted() added to IndexWriter
> --------------------------------------------------------
>
>                 Key: LUCENE-325
>                 URL: https://issues.apache.org/jira/browse/LUCENE-325
>             Project: Lucene - Java
>          Issue Type: Improvement
>          Components: Index
>    Affects Versions: CVS Nightly - Specify date in submission
>         Environment: Operating System: Windows XP
> Platform: All
>            Reporter: John Wang
>            Assignee: Michael McCandless
>            Priority: Minor
>             Fix For: 2.4
>
>         Attachments: attachment.txt, IndexWriter.patch, IndexWriter.patch, LUCENE-325.patch,
TestExpungeDeleted.java
>
>
> We make use the docIDs in lucene. I need a way to compact the docIDs in segments
> to remove the "holes" created from doing deletes. The only way to do this is by
> calling IndexWriter.optimize(). This is a very heavy call, for the cases where
> the index is large but with very small number of deleted docs, calling optimize
> is not practical.
> I need a new method: expungeDeleted(), which finds all the segments that have
> delete documents and merge only those segments.
> I have implemented this method and have discussed with Otis about submitting a
> patch. I don't see where I can attached the patch. I will do according to the
> patch guidleine and email the lucene mailing list.
> Thanks
> -John
> I don't see a place where I can

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