Solr vs Hibernate Search - Which to choose and When?

Question

We are building an ecommerce application. We are using JAVA stack with Hibernate and Spring Framework. As with all ecommerce application, we need to build search capability

Answer 1

There is another alternative which is using them both together and combining their pros together.
Have a look at: Combining the power of Hibernate Search and Solr
I'm using them together and it works fine.
Hibernate search provides me all the entities annotations & analysis and changes collection in transaction boundaries while Solr provides me the best search engine with great features as 1:m facets, clusters, etc...