我遇到了一个问题，无法通过新linux服务器上的捆绑关闭脚本关闭服务器上的liferay 6.2 tomcat捆绑包。
我采取的步骤是：
通过解压来安装捆绑包。
在默认的liferay主文件夹中上载了自定义portal-ext.properties
按照tomcat home/bin/setenv.sh中的deployment best practices guide中的定义更改内存参数
在tomcat home/conf/context.xml中添加了oracle自定义数据源
jdk-jdk1.7.0\U 75
导航到tomcat home/bin文件夹->run./startup.sh
liferay和包裹出现了。
关闭-导航到tomcat home/bin文件夹->run./shutdown.sh
这将显示以下内容，但tomcat没有关闭：

$ ./shutdown.sh
Using CATALINA_BASE:   /.../liferay-portal-6.2-ee-sp2/tomcat-7.0.42
Using CATALINA_HOME:   /.../liferay-portal-6.2-ee-sp2/tomcat-7.0.42
Using CATALINA_TMPDIR: /.../liferay-portal-6.2-ee-sp2/tomcat-7.0.42/temp
Using JRE_HOME:        /.../java/jdk1.7.0_75
Using CLASSPATH:       /.../liferay-portal-6.2-ee-sp2/tomcat-7.0.42/bin/bootstrap.jar:/.../liferay-portal-6.2-ee-sp2/tomcat-7.0.42/bin/tomcat-juli.jar

我在tomcat日志中看到了以下内容。

apr 27, 2015 1:18:23 PM org.apache.catalina.loader.WebappClassLoader clearReferencesThreads
SEVERE: The web application [] appears to have started a thread named [org.python.google.common.base.internal.Finalizer] but has failed to stop it. This is very likely to create a memory leak.
Apr 27, 2015 1:18:23 PM org.apache.catalina.loader.WebappClassLoader clearReferencesThreads
SEVERE: The web application [] appears to have started a thread named [MulticastListener-239.255.0.523305] but has failed to stop it. This is very likely to create a memory leak.
Apr 27, 2015 1:18:23 PM org.apache.catalina.loader.WebappClassLoader clearReferencesThreads
SEVERE: The web application [] appears to have started a thread named [pool-3-thread-1] but has failed to stop it. This is very likely to create a memory leak.
Apr 27, 2015 1:18:29 PM org.apache.catalina.loader.WebappClassLoader clearReferencesThreads
SEVERE: The web application [/opensocial-portlet] appears to have started a thread named [com.google.inject.internal.Finalizer] but has failed to stop it. This is very likely to create a memory leak.
Apr 27, 2015 1:18:45 PM org.apache.coyote.AbstractProtocol stop
INFO: Stopping ProtocolHandler ["http-bio-8080"]
Apr 27, 2015 1:18:45 PM org.apache.coyote.AbstractProtocol stop
INFO: Stopping ProtocolHandler ["ajp-bio-8009"]
Apr 27, 2015 1:18:45 PM org.apache.coyote.AbstractProtocol destroy
INFO: Destroying ProtocolHandler ["http-bio-8080"]
Apr 27, 2015 1:18:45 PM org.apache.coyote.AbstractProtocol destroy
INFO: Destroying ProtocolHandler ["ajp-bio-8009"]

tomcat进程在几分钟后仍然显示为活动进程，需要手动终止。关闭脚本运行一分钟左右后，liferay似乎已关闭。
我需要这个工作，所以所有的资源都被释放干净，我可以脚本启动和关闭需要。
有人看到这一点并解决了这一行为吗？如有任何见解，将不胜感激。
谢谢！