From forum:

"It is easy to reproduce. Just call CacheManager.stop().

import org.infinispan.manager.CacheManager;
import org.infinispan.manager.DefaultCacheManager;

public class TestCase {

public static void main(String[] args) throws Exception

{ CacheManager cacheManager = new DefaultCacheManager(TestCase.class.getClassLoader() .getResourceAsStream("config-samples/all.xml"), false); cacheManager.stop(); }

}

Also, the NPE is not there when

<globalJmxStatistics enabled="false" />

or if I am calling DefaultCacheManager's constructor with second argument as true.

new DefaultCacheManager("path to conf file", true);

Hope this helps."