How far behind the original is Lucene.Net?

Question

I've noticed that Lucene recently released v2.9 (on 25th September this year - 2009), whereas Lucene.Net appears to be v2.0 (released back in 2007):

• Does the v2.0 of Lucene.net correspond to the features found in v2.0 of the original Apache Lucene
• Are the improvements made in Apache Lucene since 2007 significant enough to warrant considering using the Java version (with some interop) instead?

Answer 1

The version numbers match between the Java and .Net versions - the .Net version is a direct port of the Java version (so yes, the features in v2.0 of Lucene.net correspond to the features found in v2.0 of the original Apache Lucene).

There are later versions than v2.0 of Lucene.Net available. On the Lucene.Net user list, it was announced recently that the port of v2.9 is under way and will be ready for testing soon. I am using Lucene.Net v2.3.2 (which was released on 24 July 2009) in a production application without any problems. There is also a later v2.4 which was released on 19th August 2009.

The news page of Lucene.Net's project pages has a full list of releases.