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From "Tamas Varga (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (LUCENENET-521) Concurrency bug with MMapDirectory
Date Thu, 02 May 2013 13:54:16 GMT

     [ https://issues.apache.org/jira/browse/LUCENENET-521?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Tamas Varga updated LUCENENET-521:
----------------------------------

    Attachment: segments_2
                segments.gen
                _0.cfx
                _0.cfs

Here is the index created contained by the newMMap Folder
                
> Concurrency bug with MMapDirectory
> ----------------------------------
>
>                 Key: LUCENENET-521
>                 URL: https://issues.apache.org/jira/browse/LUCENENET-521
>             Project: Lucene.Net
>          Issue Type: Bug
>          Components: Lucene.Net Core
>    Affects Versions: Lucene.Net 3.0.3
>         Environment: Visual Studio 2012, Lucene.Net 3.0.3 via Nudget, Windows 8 64bit,
4GB DDR3
>            Reporter: Tamas Varga
>            Priority: Blocker
>         Attachments: _0.cfs, _0.cfx, segments_2, segments.gen
>
>
> It seems like mmapdirectory doesnt handle concurrency
> this works fine: http://pastebin.com/EQx0L23K
> This:http://pastebin.com/ay6B2Krp (note that the only diff is, that i changed the FsDirectory.Open(newDirInfo)
to new MMapDirectory(newDirinfo) in line 12 )
> fails with exception:
> {System.ArgumentOutOfRangeException: Index was out of range. Must be non-2negative and
less than the size of the collection.
> Full exception here: http://pastebin.com/erZTxH3d
> If in the second code example I set the concurrentTaskCount to 1, everything is just
fine.
> Looks like a concurrency bug for me. I am missing something?
> T

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