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https://issues.apache.org/jira/browse/LUCENENET-106?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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eyal post updated LUCENENET-106:
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Attachment: WeakHashTable_ep_v2.zip
Digy, I took your suggestion another step and removed the need for the
EqualityComparer since hashtable provides virtual methods just for that. This
also slightly improved performance of Get
I also fixed performance issues with ForEach and CopyTo methods. New
implementation attached
perf results:
WeakHashTableV1 WeakHashTableV2
Get 0.7 0.55
Add 1.9 2.0
Contains 0.65 0.55
Remove 2.5 2.5
Replace 2.8 2.7
ForEach 1.6 0.6
Keys 3.5 3.5
CopyTo 1.7 0.8
> 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 v2.patch,
> WeakHashTable v2.patch, WeakHashTable+FieldCacheImpl.rar,
> WeakHashTable_ep.zip, WeakHashTable_ep_v2.zip, WeakHashTable_tj.zip,
> 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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