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Date: Mon, 9 Apr 2007 15:25:32 -0700 (PDT)
From: "Yonik Seeley (JIRA)" <jira@apache.org>
To: java-dev@lucene.apache.org
Subject: [jira] Commented: (LUCENE-859) Expose the number of deleted docs in
 index/segment
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    [ https://issues.apache.org/jira/browse/LUCENE-859?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12487644 ] 

Yonik Seeley commented on LUCENE-859:
-------------------------------------

> Though it might still be handy to have something with main() that spits out the number of deleted
> documents, as SegmentReader has in my patch.

I don't understand that comment.  I don't see anything in your patch besides the implementation of deletedDocs().

> Maybe that should be added to the existing IndexReader.main ?

That sounds fine.

> Expose the number of deleted docs in index/segment
> --------------------------------------------------
>
>                 Key: LUCENE-859
>                 URL: https://issues.apache.org/jira/browse/LUCENE-859
>             Project: Lucene - Java
>          Issue Type: New Feature
>          Components: Index
>            Reporter: Otis Gospodnetic
>         Assigned To: Otis Gospodnetic
>            Priority: Minor
>         Attachments: LUCENE-859
>
>
> Use case:
> We've got a lot of large, mostly search-only indices. These indices are not re-optimized once "deployed".   Docs in them do not get updated, but they do get deleted.  After a while, the number of deleted docs grows, but it's hard to tell how many documents have been deleted.
> Exposing the number of deleted docs via *Reader.deletedDocs() method let's you get to this number.
> I'm attaching  patch that touches the following:
> M      src/test/org/apache/lucene/index/TestSegmentReader.java
> M      src/java/org/apache/lucene/index/MultiReader.java
> M      src/java/org/apache/lucene/index/IndexReader.java
> M      src/java/org/apache/lucene/index/FilterIndexReader.java
> M      src/java/org/apache/lucene/index/ParallelReader.java
> M      src/java/org/apache/lucene/index/SegmentReader.java
> SegmentReader also got a public static main(String[]) that takes 1 command-line parameter, a path to the index to check, and prints out the number of deleted docs.

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