Hi there,

We have a huge database and the lucene index is going to be a huge one, so in order to optimize the index we were thinking if we can partition the index logically.

We know we can do this through Sharding but we were trying to find a way wherein I can redirect the user request logically through my web application to a particular index location out of multiple index locations rather than having one very large index which will then compromise speed.

Is this even possible?

These are some resources that should help you with your issue:
Hibernate Search Documentation (Chapter 10.4): http://docs.jboss.org/hibernate/search/4.4/reference/en-US/html/search-lucene-native.html#search-configuration-directory-sharding
Very simple IndexShardingStrategy example: https://github.com/hibernate/hibernate-search/blob/master/orm/src/test/java/org/hibernate/search/test/shards/CustomerShardingStrategy.java?source=cc

Does this reply to your question?

This might be of interest as well:
http://docs.jboss.org/hibernate/search/4.4/reference/en-US/html/search-query.html#query-filter-shard