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From "Ruben Laguna (JIRA)" <j...@apache.org>
Subject [jira] Created: (LUCENE-2387) IndexWriter retains references to Readers used in Fields (memory leak)
Date Thu, 08 Apr 2010 20:30:37 GMT
IndexWriter retains references to Readers used in Fields (memory leak)
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                 Key: LUCENE-2387
                 URL: https://issues.apache.org/jira/browse/LUCENE-2387
             Project: Lucene - Java
          Issue Type: Bug
    Affects Versions: 3.0.1
            Reporter: Ruben Laguna


As described in [1] IndexWriter retains references to Reader used in Fields and that can lead
to big memory leaks when using tika's ParsingReaders (as those can take 1MB per ParsingReader).


[2] shows a screenshot of the reference chain to the Reader from the IndexWriter taken with
Eclipse MAT (Memory Analysis Tool) . The chain is the following:

IndexWriter -> DocumentsWriter -> DocumentsWriterThreadState -> DocFieldProcessorPerThread
 -> DocFieldProcessorPerField -> Fieldable -> Field (fieldsData) 


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[1] http://markmail.org/thread/ndmcgffg2mnwjo47
[2] http://skitch.com/ecerulm/n7643/eclipse-memory-analyzer



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