Friday October 26, 2012

Lucene.Net 3.0.3 Released

Apache Lucene.Net 3.0.3 just passed a vote for release - our first official release since graduating from the incubator in August. A lot of work was put into porting and testing the code. We've brought back .Net 3.5 support and added an entirely new Spatial Contrib project.

Files can be downloaded from a number of places:


Is it a final release or a release candidate? SVN Source points to RC1 (release candidate 1 ?) Dist Source points to RC2 (release candidate 2 ?)

Posted by Anton on October 30, 2012 at 06:56 AM GMT #

Great! Thanks. Please include XML documentation files with the binary releases.

Posted by Anders Lybecker on October 31, 2012 at 09:19 AM GMT #

Yes, I'm sorry the tags are rough (entirely my fault). I am in the process of updating the tags / and links to make it clear this is final

Posted by Prescott on October 31, 2012 at 04:15 PM GMT #

XML documentation is in the binary release as well as included in the nuget packages.

Posted by Prescott on October 31, 2012 at 04:17 PM GMT #

Thanks for your good work,it's a great project,I have use for 3 years

Posted by yepeng on November 06, 2012 at 01:29 AM GMT #

Is there a way i can remove SharpZipLib dependency and probably plug in something like -

Posted by Monish on November 07, 2012 at 07:27 PM GMT #

If this is the Lucene.Net 3.0.3 release (i.e. RTW/RTM) then why are the source links pointing to an RC tag?

Posted by Tom Robinson on November 15, 2012 at 11:16 AM GMT #

Where are the release notes? I definitely see changes in APIs (old code is broken).

Posted by Tom McKearney on November 21, 2012 at 03:28 PM GMT #

What's new in this version? Will my indexes still work with this version?

Posted by Syldour on November 22, 2012 at 02:23 AM GMT #

One quick question, are the java based indexes and .Net indexes interchangeable? I didn't see anything in the documentation on that.

Posted by Bill Miller on November 29, 2012 at 09:51 PM GMT #

I found this blog while looking for the page (the incubator page is still ranked top in google and returns a 404, is there a new official page for lucene .net?) In any case congratulations on making it out of incubation and thanks for the efforts, i'm happily using in my product and it's been working great & fast so far.

Posted by ronan thibaudau on December 15, 2012 at 09:21 AM GMT #

What happened to DistanceQueryBuilder? Was that removed or deprecated?

Posted by David Pellerin on January 23, 2013 at 03:49 PM GMT #

@BillMiller - Yes, the java and .NET indexes are interchangeable. For example, if you create an index using Lucene.Net, you can easily open it back up using Luke, a java based index viewer. @David - The spatial library was updated to the latest version, corresponding to version 3.6 or 4.0 of Java Lucene. The spatial module was completely rewritten and that class was removed. I recall there being lots of issues with the Spatial library around version 2.9/3.0, so it was replace with the version we've just recently ported.

Posted by Christopher Currens on January 27, 2013 at 02:24 AM GMT #

Hi, Do you know if it is possible to open an elasticsearch shard (lucene 3.6.2) with c# code using lucene 3.0.3 for dot net (the newest version for dot net)? I get the error "Unknown format version: -11". Thanks, Ophir

Posted by Ophir on February 04, 2013 at 10:32 AM GMT #

Hi, do you know what is the time schedule for the lucene 4.0 to be out ? we are really want to be able to work with Concurrent flushing , which should be only from version 4.0. can i contribute to this project and port only the Concurrent flushing ?

Posted by Itai bechor on February 13, 2013 at 03:29 PM GMT #

Hi, Is this version support for lucene grouping functionalities. I am concerned about having FirstPassGroupingCollector and SecondPassGroupingCollector classe.

Posted by Kasun on February 20, 2013 at 12:51 PM GMT #

Reading Java Lucene 3.6.1 index directory (generated by GeoNetwork 2.8), with Lucene .Net 3.0.3 cause the error "Unknown format version: -11". Do you know if there is a workaround?

Posted by stario on June 24, 2013 at 10:07 AM GMT #

Hi, I m using Lucene.Net 3.0.3. I m unable to find class “ParallelMultiSearcher” which was present in previous version of lucene.Net 2.9.2. Also after searching on “”, I came to know that “ParallelMultiSeacher” class has been depreciated . Instead of that we can use “ IndexSearcher(IndexReader r, ExecutorService executor)” But I m unable to find IndexSearcher constructor with “ExecutorService” as its parameter. Also I m unable to find interface “ExecutorService” in lucene.Net 3.0.3. Can you please tell me how can I use “ParallelMultiSearcher” using lucene.Net 3.0.3 or is there any alternative to do that and how? Thanks And Regards, Mohit Shah.

Posted by Mohit Shah on July 22, 2013 at 09:59 AM GMT #

I'm considering using Lucene or for a new project. I'd rather use as it is likely that the rest of our server will be written in c#. However as far as I can tell, is several versions behind Lucene, and no new versions have been release for a couple of years! Is still being actively maintained/developed?

Posted by Leighton Hargreaves on May 20, 2014 at 12:00 PM GMT #

Guys, it took a lot of clicking around to find this : I know you're horribly busy but if you want to make sure that people find your latest work and support your efforts, be sure to link to the latest resources from the old ones that haven't been updated in years. I don't know if you realise it but when people find old, out of date resources, they conclude that your project is dead. Glad to see you're still working on Lucene.Net ! Michael O'Shea

Posted by Michael O'Shea on October 12, 2014 at 08:21 AM GMT #

Software Licence I want to wrote the best desktop search software based on Lucene.Net. The software is commercial. I have read the apache software license, but unfortunately English is not my mother language, I could not understand fully, can you provide the practical implications using your lib in a commercial product ? Regards

Posted by Miguel on May 03, 2015 at 04:41 PM GMT #

Is there any way that Lucene.Net will be FIPS compliant? Our app currently uses Lucene.Net but must now be FIPS compliant, which the calls to the MD5 crypto are not. I read of a proposed patch but I don't believe that this was implemented in the latest port to .Net, as I am currently using

Posted by Will on October 14, 2016 at 02:56 PM GMT #

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