Hello,

I have two products that are using Lucene: The first product creates the Lucene 
indexes for some data using Lucene version 3.01. The second product utilizes 
the indexes created by the first product for text search purposes and is also 
using Lucene 3.01.  I understand that the latest version of Lucene 4.0 has made 
several performance enhancements of which we would like to be able to leverage 
by our second product.

Question:   If we upgrade the second product to use Lucene 4.0, will we still 
be able to take advantage of search related performance gains while still using 
the index created using Lucene 3.01 by our first product? OR, will we have to 
"bite the bullet" and upgrade BOTH products to use the latest version of Lucene?

Thanks in advance for you response.

Sincerely,

Paul Sitowitz


________________________________
P a u l   S i t o w i t z
Core Engineering
VeriSign Naming Services

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