https://issues.apache.org/bugzilla/show_bug.cgi?id=56387
--- Comment #2 from qiubo...@qq.com --- yes,thread b could see non-updated value started=true,my typo. we found this excepiton: java.lang.NoClassDefFoundError: org/jboss/netty/util/internal/ExecutorUtil at org.jboss.netty.channel.socket.nio.NioServerSocketChannelFactory.releaseExternalResources(NioServerSocketChannelFactory.java:146) ~[netty-3.2.5.Final.jar:na] at org.jboss.netty.bootstrap.Bootstrap.releaseExternalResources(Bootstrap.java:324) ~[netty-3.2.5.Final.jar:na] at com.alibaba.dubbo.remoting.transport.netty.NettyServer.doClose(NettyServer.java:124) ~[dubbo-2.5.3.jar:2.5.3] at com.alibaba.dubbo.remoting.transport.AbstractServer.close(AbstractServer.java:155) [dubbo-2.5.3.jar:2.5.3] at com.alibaba.dubbo.remoting.transport.AbstractServer.close(AbstractServer.java:163) [dubbo-2.5.3.jar:2.5.3] at com.alibaba.dubbo.remoting.exchange.support.header.HeaderExchangeServer.close(HeaderExchangeServer.java:121) [dubbo-2.5.3.jar:2.5.3] at com.alibaba.dubbo.rpc.protocol.dubbo.DubboProtocol.destroy(DubboProtocol.java:395) [dubbo-2.5.3.jar:2.5.3] at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper.destroy(ProtocolFilterWrapper.java:66) [dubbo-2.5.3.jar:2.5.3] at com.alibaba.dubbo.rpc.protocol.ProtocolListenerWrapper.destroy(ProtocolListenerWrapper.java:72) [dubbo-2.5.3.jar:2.5.3] at com.alibaba.dubbo.config.ProtocolConfig.destroyAll(ProtocolConfig.java:435) [dubbo-2.5.3.jar:2.5.3] at com.alibaba.dubbo.config.AbstractConfig$1.run(AbstractConfig.java:452) [dubbo-2.5.3.jar:2.5.3] at java.lang.Thread.run(Thread.java:722) [na:1.7.0_03] Caused by: java.lang.ClassNotFoundException: org.jboss.netty.util.internal.ExecutorUtil at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1711) ~[na:na] at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1556) ~[na:na] ... 12 common frames omitted the thread b is a java shunt down hook.so,it haven't been stopped . -- You are receiving this mail because: You are the assignee for the bug. --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@tomcat.apache.org For additional commands, e-mail: dev-h...@tomcat.apache.org