whoops .. forgot the documentaiton link... http://wiki.apache.org/solr/SolrPlugins#head-9939da9abe85a79eb30a026e85cc4aec0beac10c
: you can use any Analyzer you want, but you can't configure a : positionIncrementGap in the schema.xml unless your Analyzer extends : SolrAnalyzer (the concept of a position increment gap is an inherient : property that Lucene Analyzers can specify, but configuring it explicitly : is a Solr concept) -Hoss