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https://issues.apache.org/jira/browse/LUCENENET-106?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12557244#action_12557244
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mdissel edited comment on LUCENENET-106 at 1/9/08 4:31 AM:
----------------------------------------------------------------
I got another serious memory leak. This is the result from DebugDiag tool. The
patch in this issue doesn't solve this one.. Anyone solved this already?
(doing a seach with a custom sort)
Is this line the problem in the FieldCacheImpl?
class Cache.Get
//
innerCache = new System.Collections.Hashtable(); // shouldn't this be
WeakHashtable()???
//
[DEFAULT] [hasThis] Object
Lucene.Net.Search.FieldCacheImpl/AnonymousClassCache3.CreateValue(Class
Lucene.Net.Index.IndexReader,Object) 0xC920F4
[DEFAULT] [hasThis] Object Lucene.Net.Search.FieldCacheImpl/Cache.Get(Class
Lucene.Net.Index.IndexReader,Object)
[DEFAULT] [hasThis] Class Lucene.Net.Search.StringIndex
Lucene.Net.Search.FieldCacheImpl.GetStringIndex(Class
Lucene.Net.Index.IndexReader,String)
[DEFAULT] [hasThis] Object
Lucene.Net.Search.FieldCacheImpl/AnonymousClassCache4.CreateValue(Class
Lucene.Net.Index.IndexReader,Object)
[DEFAULT] [hasThis] Object Lucene.Net.Search.FieldCacheImpl/Cache.Get(Class
Lucene.Net.Index.IndexReader,Object)
[DEFAULT] [hasThis] Object Lucene.Net.Search.FieldCacheImpl.GetAuto(Class
Lucene.Net.Index.IndexReader,String)
[DEFAULT] Class Lucene.Net.Search.ScoreDocComparator
Lucene.Net.Search.FieldSortedHitQueue.ComparatorAuto(Class
Lucene.Net.Index.IndexReader,String)
[DEFAULT] [hasThis] Object
Lucene.Net.Search.FieldSortedHitQueue/AnonymousClassCache.CreateValue(Class
Lucene.Net.Index.IndexReader,Object) [DEFAULT] Class
Lucene.Net.Search.ScoreDocComparator
Lucene.Net.Search.FieldSortedHitQueue.ComparatorAuto(Class
Lucene.Net.Index.IndexReader,String)
[DEFAULT] [hasThis] Object Lucene.Net.Search.FieldCacheImpl/Cache.Get(Class
Lucene.Net.Index.IndexReader,Object)
[DEFAULT] Class Lucene.Net.Search.ScoreDocComparator
Lucene.Net.Search.FieldSortedHitQueue.GetCachedComparator(Class
Lucene.Net.Index.IndexReader,String,I4,Class
System.Globalization.CultureInfo,Class Lucene.Net.Search.SortComparatorSource)
[DEFAULT] [hasThis] Void Lucene.Net.Search.FieldSortedHitQueue..ctor(Class
Lucene.Net.Index.IndexReader,SZArray Class Lucene.Net.Search.SortField,I4)
[DEFAULT] Class Lucene.Net.Search.ScoreDocComparator
Lucene.Net.Search.FieldSortedHitQueue.GetCachedComparator(Class
Lucene.Net.Index.IndexReader,String,I4,Class
System.Globalization.CultureInfo,Class Lucene.Net.Search.SortComparatorSource)
[DEFAULT] [hasThis] Class Lucene.Net.Search.TopFieldDocs
Lucene.Net.Search.IndexSearcher.Search(Class Lucene.Net.Search.Weight,Class
Lucene.Net.Search.Filter,I4,Class Lucene.Net.Search.Sort) [DEFAULT]
[hasThis] Void Lucene.Net.Search.FieldSortedHitQueue..ctor(Class
Lucene.Net.Index.IndexReader,SZArray Class Lucene.Net.Search.SortField,I4)
[DEFAULT] [hasThis] Class Lucene.Net.Search.TopFieldDocs
Lucene.Net.Search.Searcher.Search(Class Lucene.Net.Search.Query,Class
Lucene.Net.Search.Filter,I4,Class Lucene.Net.Search.Sort)
was (Author: mdissel):
I got another serious memory leak. This is the result from DebugDiag tool.
The attached patched doesn't solve this one.. Anyone solved this already?
Is this line the problem in the FieldCacheImpl?
class Cache.Get
//
innerCache = new System.Collections.Hashtable(); // shouldn't this be
WeakHashtable()???
//
[DEFAULT] [hasThis] Object
Lucene.Net.Search.FieldCacheImpl/AnonymousClassCache3.CreateValue(Class
Lucene.Net.Index.IndexReader,Object) 0xC920F4
[DEFAULT] [hasThis] Object Lucene.Net.Search.FieldCacheImpl/Cache.Get(Class
Lucene.Net.Index.IndexReader,Object)
[DEFAULT] [hasThis] Class Lucene.Net.Search.StringIndex
Lucene.Net.Search.FieldCacheImpl.GetStringIndex(Class
Lucene.Net.Index.IndexReader,String)
[DEFAULT] [hasThis] Object
Lucene.Net.Search.FieldCacheImpl/AnonymousClassCache4.CreateValue(Class
Lucene.Net.Index.IndexReader,Object)
[DEFAULT] [hasThis] Object Lucene.Net.Search.FieldCacheImpl/Cache.Get(Class
Lucene.Net.Index.IndexReader,Object)
[DEFAULT] [hasThis] Object Lucene.Net.Search.FieldCacheImpl.GetAuto(Class
Lucene.Net.Index.IndexReader,String)
[DEFAULT] Class Lucene.Net.Search.ScoreDocComparator
Lucene.Net.Search.FieldSortedHitQueue.ComparatorAuto(Class
Lucene.Net.Index.IndexReader,String)
[DEFAULT] [hasThis] Object
Lucene.Net.Search.FieldSortedHitQueue/AnonymousClassCache.CreateValue(Class
Lucene.Net.Index.IndexReader,Object) [DEFAULT] Class
Lucene.Net.Search.ScoreDocComparator
Lucene.Net.Search.FieldSortedHitQueue.ComparatorAuto(Class
Lucene.Net.Index.IndexReader,String)
[DEFAULT] [hasThis] Object Lucene.Net.Search.FieldCacheImpl/Cache.Get(Class
Lucene.Net.Index.IndexReader,Object)
[DEFAULT] Class Lucene.Net.Search.ScoreDocComparator
Lucene.Net.Search.FieldSortedHitQueue.GetCachedComparator(Class
Lucene.Net.Index.IndexReader,String,I4,Class
System.Globalization.CultureInfo,Class Lucene.Net.Search.SortComparatorSource)
[DEFAULT] [hasThis] Void Lucene.Net.Search.FieldSortedHitQueue..ctor(Class
Lucene.Net.Index.IndexReader,SZArray Class Lucene.Net.Search.SortField,I4)
[DEFAULT] Class Lucene.Net.Search.ScoreDocComparator
Lucene.Net.Search.FieldSortedHitQueue.GetCachedComparator(Class
Lucene.Net.Index.IndexReader,String,I4,Class
System.Globalization.CultureInfo,Class Lucene.Net.Search.SortComparatorSource)
[DEFAULT] [hasThis] Class Lucene.Net.Search.TopFieldDocs
Lucene.Net.Search.IndexSearcher.Search(Class Lucene.Net.Search.Weight,Class
Lucene.Net.Search.Filter,I4,Class Lucene.Net.Search.Sort) [DEFAULT]
[hasThis] Void Lucene.Net.Search.FieldSortedHitQueue..ctor(Class
Lucene.Net.Index.IndexReader,SZArray Class Lucene.Net.Search.SortField,I4)
[DEFAULT] [hasThis] Class Lucene.Net.Search.TopFieldDocs
Lucene.Net.Search.Searcher.Search(Class Lucene.Net.Search.Query,Class
Lucene.Net.Search.Filter,I4,Class Lucene.Net.Search.Sort)
> 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, 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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