DO NOT REPLY [Bug 36241] New: - "Cannot rename segments.new to segments"

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http://issues.apache.org/bugzilla/show_bug.cgi?id=36241

           Summary: "Cannot rename segments.new to segments"
           Product: Lucene
           Version: 1.4
          Platform: PC
        OS/Version: Windows XP
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Index
        AssignedTo: java-dev@lucene.apache.org
        ReportedBy: mikko@noromaa.fi


AddDocument periodically fails with "Cannot rename segments.new to segments". 
Sometimes it happens after 10,000 documents, sometimes after 200,000 documents.

My index is placed on a FAT partition. My Lucene version is 1.4.3. I am using 
a single IndexWriter object and doing all AddDocuments calls serially from a 
single thread.

I saw some discussion about this problem in the mailing lists, but looks like 
the problem wasn't completely eliminated yet.

My suggested solutions are as follows:

- If renameTo() fails, wait some time and retry. After this, apply the other 
methods that are now in FSDirectory.java. Retry them as well after waiting for 
some time.

- In the IndexWriter constructor, check for 'segments.new' if 'segments' 
cannot be found. This would allow recovery if FSDirectory failed on a previous 
run. Now I have to write the recovery code myself outside of Lucene.

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