Dear Sir: Firstly thank you for reading my mail. My questions are as follows: I had successfully installed and runned the nutch, I deployed the nutch project to tomat's webapps. But when I re-crawled to update the indexers, I found that nutch couldn't update the indexers in time. And when I restarted the tomcat , the indexers are updated. But I don't want to restart the tomcat server to update the indexers. Could this question be solved ? If could , what should I do ? Please teach me how to solve this question in details. Thanks for reading. A starter with nutch 2009-6-17