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From Ian Lea <ian....@gmail.com>
Subject Re: How to close IndexSearcher so that index file gets released?
Date Mon, 16 Aug 2010 13:27:34 GMT
Read the javadocs for MMapDirectory.

--
Ian.


On Mon, Aug 16, 2010 at 2:21 PM, Mylnikov Sergey <semykov@yandex.ru> wrote:
> Hi,
>
> I want to be able to regenerate index from time to time. I'm using IndexSearcher for
search and want to be able to release the current index file so that I can replace it with
the new one. But once IndexSearcher is instantiated it does not seem to release index file
even if I call close().
>
> I'm running the test on Windows XP. Here is a short test that I use:
>
> String indexDir = "C:/IndexTemp2/index/";
> IndexSearcher searcher = new IndexSearcher(new MMapDirectory(new File(indexDir)));
> searcher.close();
> /*
>  Trying to see if the index file can be modified
>  */
> new FileWriter(indexDir + "_0.cfs");
> /*
>  java.io.FileNotFoundException: C:\IndexTemp2\index\_0.cfs
>  (The requested operation cannot be performed on a file with a user-mapped section open.)
>  */
>
> After I close IndexSearcher I try to check if I can modify file, but it is in use.
>
> Could someone tell me what is the correct way to close the IndexReader?
>
> I will try to attach the JUnit test class and index directory as ZIP archive to this
message.
>
> Thanks,
> Sergey
>
>
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