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From Michael McCandless <>
Subject Re: Creation of index for the first time
Date Wed, 11 Feb 2009 16:24:50 GMT

If you create IndexWriter with create=true in a directory that has no  
Lucene index, segments_1 is created.

If you do the same, but in a directory that already has a Lucene  
index, segments_(N+1) is created (where N was the last generation of  
the current index in that directory).

But... this is an internal detail to Lucene's index format and could  
change in some future release.


Akshay wrote:

> Hi List,
> How to find if an empty lucene index has been created for the very  
> first
> time? Is the generation number 1 enough to determine this?
> -- 
> Regards,
> Akshay K. Ukey.

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