Lucene is 100% java. Also, it has been implemented in different languages. I think that java, being an interpreted language, is slow, so processing expensive requirements like indexing cannot be a java's language design aim. But, I do not have any reference about this hypothesis. So...
- Do you know any benchmark comparing different Lucene implementations?
- If you have used Lucene in any of its implementations, what do you think about Lucene performance?