multi user multi index?

[nesrka sri]

Hi,

   Iam currently working on indexing the documents present in a web based 
document management system. The system currently has around 200,000 users and 
each user has approximately 10 to 100 documents.We currently have around 50 GB 
of data. The system should allow the users only to search across his/her 
documents.

Currently our system is designed such that each user has a separate index. The 
index size for each user is around 500KB to 5MB approx. For each document added 
by the user a indexwriter is created and for each search by the user a 
indexreader is created. ( I think it may not be a good idea). Can some throw 
some light on what kind of issues we might face with this kind of setup?

Or should we have a single index. add unique user id as a field in each 
document. Search with user id added as a filter.


Thanks,
nesrka


                                
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