haipeng du wrote:

That is just my concern because my big number of documents I will have(at least 4 million documents).

4 million documents is nothing - many people routinely search on much larger Lucene Indexes than that. Test first. Then find and fix your bottlenecks and/or high memory use items. My hunch is that you will discover that you are wasting time worrying about potential problems that will not occur. You time would be better spent doing some real testing, and working to improve your code from there, as you discover real (rather then potential) problems.

Dan

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Daniel Armbrust
Biomedical Informatics
Mayo Clinic Rochester
daniel.armbrust(at)mayo.edu
http://informatics.mayo.edu/


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