See: http://lucene.apache.org/java/docs/fileformats.html on VInt on saving space for the ordinary case. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4102751#4102751 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4102751