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https://issues.apache.org/jira/browse/LUCENENET-106?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12608734#action_12608734
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George Aroush commented on LUCENENET-106:
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What about Lucene.Net 2.0, 1.9.1, and prior? Do they too have this memory leak?
There was a memory leak which was fixed with this LUCENENET-29.
Can you run your test on 2.0 or 1.9.1?
Thanks.
-- George
> 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.
> 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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