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From "Karl Wettin (JIRA)" <j...@apache.org>
Subject [jira] Commented: (LUCENE-874) Automatic reopen of IndexSearcher/IndexReader
Date Thu, 03 May 2007 19:29:15 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-874?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12493470
] 

Karl Wettin commented on LUCENE-874:
------------------------------------

LUCENE-550 contains NotifiableIndex that by decoration keeps track of whats going on in a
index. It comes with AutofreshedReader and AutofreshedSearcher, active hit collection cache
et c. Perhaps that works for you? Java 1.5

> Automatic reopen of IndexSearcher/IndexReader
> ---------------------------------------------
>
>                 Key: LUCENE-874
>                 URL: https://issues.apache.org/jira/browse/LUCENE-874
>             Project: Lucene - Java
>          Issue Type: Improvement
>          Components: Search
>            Reporter: João Fonseca
>            Priority: Minor
>
> To improve performance, a single instance of IndexSearcher should be used. However, if
the index is updated, it's hard to close/reopen it, because multiple threads may be accessing
it at the same time.
> Lucene should include an out-of-the-box solution to this problem. Either a new class
should be implemented to manage this behaviour (singleton IndexSearcher, plus detection of
a modified index, plus safely closing and reopening the IndexSearcher) or this could be behind
the scenes by the IndexSearcher class.

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