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https://issues.apache.org/jira/browse/LUCENENET-534?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13866324#comment-13866324
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Simon Svensson commented on LUCENENET-534:
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As I answered you on Stack Overflow; you do have some non-conventional handling
of your indexes and writers. This issue is most probably due to your
implementation, how you handle your writers and when you're committing them.
Could you provide a small stand-alone code sample with the minimal amount of
code required (with fake data) that can reproduce the problem?
> IndexWriter deletes all files in my global index folder
> -------------------------------------------------------
>
> Key: LUCENENET-534
> URL: https://issues.apache.org/jira/browse/LUCENENET-534
> Project: Lucene.Net
> Issue Type: Bug
> Components: .NET API
> Reporter: ali koyuncu
> Priority: Critical
>
> I process new data list in memory-directory. After that I commit
> memory-directory to disk directrory. After I commit global index writer,I
> see the files isn't combined.So when I reopen the service,indexwriter deletes
> all files in global index folder. I traced codes ,
> "deleter = new IndexFileDeleter(directory, deletionPolicy == null?new
> KeepOnlyLastCommitDeletionPolicy():deletionPolicy, segmentInfos, infoStream,
> docWriter, synced);" in IndexWriter Init method,it deletes all file here.
> I asked it on stackoverlow.
> http://stackoverflow.com/questions/20973121/lucene-net-indexwriter-bug?noredirect=1#comment31536841_20973121
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