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From "Greg Steffensen (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (LUCENE-3445) Add SearcherManager, to manage IndexSearcher usage across threads and reopens
Date Tue, 27 Sep 2011 20:40:45 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-3445?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13115900#comment-13115900
] 

Greg Steffensen commented on LUCENE-3445:
-----------------------------------------

What are the different use cases for this and NRTManager?
                
> Add SearcherManager, to manage IndexSearcher usage across threads and reopens
> -----------------------------------------------------------------------------
>
>                 Key: LUCENE-3445
>                 URL: https://issues.apache.org/jira/browse/LUCENE-3445
>             Project: Lucene - Java
>          Issue Type: Improvement
>            Reporter: Michael McCandless
>            Assignee: Michael McCandless
>             Fix For: 3.5, 4.0
>
>         Attachments: LUCENE-3445.patch, LUCENE-3445.patch
>
>
> This is a simple helper class I wrote for Lucene in Action 2nd ed.
> I'd like to commit under Lucene (contrib/misc).
> It simplifies using & reopening an IndexSearcher across multiple
> threads, by using IndexReader's ref counts to know when it's safe
> to close the reader.
> In the process I also factored out a test base class for tests that
> want to make lots of simultaneous indexing and searching threads, and
> fixed TestNRTThreads (core), TestNRTManager (contrib/misc) and the new
> TestSearcherManager (contrib/misc) to use this base class.

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