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http://issues.apache.org/bugzilla/show_bug.cgi?id=40212 ------- Additional Comments From [EMAIL PROTECTED] 2007-07-06 02:39 ------- I have the same problem during redeploy. It sometimes happens during shutdown and always when it is started again: Caused by: java.lang.NullPointerException at org.apache.log4j.Category.isEnabledFor(Category.java:746) at org.apache.commons.logging.impl.Log4JLogger.isTraceEnabled(Log4JLogger.java:327) at net.sf.ehcache.store.MemoryStore.get(MemoryStore.java:137) at net.sf.ehcache.Cache.searchInMemoryStore(Cache.java:820) at net.sf.ehcache.Cache.get(Cache.java:655) at net.sf.ehcache.constructs.blocking.BlockingCache.get(BlockingCache.java:513) at net.sf.ehcache.constructs.blocking.SelfPopulatingCache.get(SelfPopulatingCache.java:71) My setup is this: - commons-logging-api 1.1 in tomcat/bin - commons-logging 1.1 in tomcat/common/lib - log4j 1.2.14 in tomcat/common/lib - ehcache 1.2.4 in tomcat/common/lib - property files in tomcat/common/classes - commons-logging 1.1 in WEB-INF/lib - log4j 1.2.14 in WEB-INF/lib - property files in WEB-INF/classes I have *two* webapps deployed which use ehcache. My guess is that during shutdown, the log4j which is used by tomcat itself is destroyed while the webapp tries to get rid of its copy because there is a mixup in the classloader or a pointer into log4j from ehcache (which probably uses the tomcat log4j) leaks into the webapp. -- Configure bugmail: http://issues.apache.org/bugzilla/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the assignee for the bug, or are watching the assignee. --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]