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https://issues.apache.org/jira/browse/LUCENENET-106?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12554835
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Anton K. commented on LUCENENET-106:
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Ross,
Terms also can be stored inside static
Lucene.Net.Search.FieldCache_Fields.DEFAULT field.
Make shure that you clean it when closing IndexReader.
I implemented bool IsClosed property in IndexReader and remove all closed
IndexReaders inside following method.
public virtual System.Object Get(IndexReader reader, System.Object key)
This solves all memory problems that I had.
> 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
>
> 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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