Malaga-fi is a Nutch plugin for indexing documents written in Finnish. It analyses words morphologically and indexes only the base forms (that you find in dictionaries) so that you find all inflections of a word by just searching for the base form.
Now malaga-fi is in SourceForge. http://sourceforge.net/projects/malaga-fi/ https://malaga-fi.svn.sourceforge.net/svnroot/malaga-fi/