: Caused by: java.lang.ClassNotFoundException: : solr.StempelPolishStemFilterFactory : : So I tried putting : contrib/analysis-extras/lucene-libs/lucene-stempel-3.1-2010-12-06_10-23-49.jar : in ./lib and ./lucene-libs - same result.
The lucene-stempel-*.jar file contains the StempelPolishStemFilter, but to use it in Solr you also need the StempelPolishStemFilterFactory which is in the apache-solr-analysis-extras-*.jar -Hoss
