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From "Digy (JIRA)" <j...@apache.org>
Subject [jira] Closed: (LUCENENET-106) Lucene.NET (Revision: 603121) is leaking memory
Date Sat, 27 Dec 2008 18:46:44 GMT

     [ https://issues.apache.org/jira/browse/LUCENENET-106?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Digy closed LUCENENET-106.
--------------------------

    Resolution: Fixed
      Assignee: Digy

Patches are applied.

DIGY.

> Lucene.NET (Revision: 603121) is leaking memory
> -----------------------------------------------
>
>                 Key: LUCENENET-106
>                 URL: https://issues.apache.org/jira/browse/LUCENENET-106
>             Project: Lucene.Net
>          Issue Type: Bug
>         Environment: .NET 2.0
>            Reporter: Anton K.
>            Assignee: Digy
>            Priority: Critical
>         Attachments: DIGY-FieldCacheImpl.patch, Digy.rar, luceneSrc_memUsage.patch, Paches
for v2.3.1.rar, WeakHashTable+FieldCacheImpl.rar, WeakReferences.rar
>
>
> readerCache Hashtable field (see FieldCacheImpl.cs) never releases some hash items that
have closed IndexReader object as a key. So a lot of Term instances are never released.
> Java version of Lucene uses WeakHashMap and therefore doesn't have this problem.
> This bug can be reproduced only when Sort functionality used during search. 
> See following link for additional information.
> http://www.gossamer-threads.com/lists/lucene/java-user/55681
> Steps to reproduce:
> 1)Create index
> 2) Modify index by IndexWiter; Close IndexWriter
> 3) Use IndexSearcher for searching with Sort; Close InexSearcher
> 4) Go to step 2
> You'll get OutOfMemoryException after some time of running this algorithm.

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