Removing all statistics for one server resulted in exception and the 
configuration is not saved
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                 Key: GERONIMO-4601
                 URL: https://issues.apache.org/jira/browse/GERONIMO-4601
             Project: Geronimo
          Issue Type: Bug
      Security Level: public (Regular issues)
          Components: monitoring
    Affects Versions: 2.1.5
            Reporter: Jack Cai
            Assignee: Jack Cai
            Priority: Minor


If all statistics are removed for one server, then there is the below exception 
in the server log, and the configuratiion is not saved - after refresh, you get 
the old statistics back.

2009-03-25 16:17:31,109 ERROR [SnapshotConfigXMLBuilder] 文件过早结束。
org.xml.sax.SAXParseException: 文件过早结束。
        at org.apache.xerces.parsers.DOMParser.parse(Unknown Source)
        at org.apache.xerces.jaxp.DocumentBuilderImpl.parse(Unknown Source)
        at javax.xml.parsers.DocumentBuilder.parse(Unknown Source)
        at 
org.apache.geronimo.monitoring.snapshot.SnapshotConfigXMLBuilder.openDocument(SnapshotConfigXMLBuilder.java:286)
        at 
org.apache.geronimo.monitoring.snapshot.SnapshotConfigXMLBuilder.getAttributeValue(SnapshotConfigXMLBuilder.java:197)
        at 
org.apache.geronimo.monitoring.MasterRemoteControl.getSnapshotDuration(MasterRemoteControl.java:320)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at 
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:79)
        at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:618)
        at 
org.apache.openejb.core.interceptor.ReflectionInvocationContext$Invocation.invoke(ReflectionInvocationContext.java:158)
        at 
org.apache.openejb.core.interceptor.ReflectionInvocationContext.proceed(ReflectionInvocationContext.java:141)
        at 
org.apache.openejb.core.interceptor.InterceptorStack.invoke(InterceptorStack.java:67)
        at 
org.apache.openejb.core.stateless.StatelessContainer._invoke(StatelessContainer.java:210)
        at 
org.apache.openejb.core.stateless.StatelessContainer._invoke(StatelessContainer.java:188)
        at 
org.apache.openejb.core.stateless.StatelessContainer.invoke(StatelessContainer.java:165)
        at 
org.apache.openejb.server.ejbd.EjbRequestHandler.doEjbObject_BUSINESS_METHOD(EjbRequestHandler.java:238)
        at 
org.apache.openejb.server.ejbd.EjbRequestHandler.processRequest(EjbRequestHandler.java:129)
        at 
org.apache.openejb.server.ejbd.EjbDaemon.processEjbRequest(EjbDaemon.java:164)
        at org.apache.openejb.server.ejbd.EjbDaemon.service(EjbDaemon.java:122)
        at org.apache.openejb.server.ejbd.EjbDaemon.service(EjbDaemon.java:84)
        at org.apache.openejb.server.ejbd.EjbServer.service(EjbServer.java:60)
        at org.apache.openejb.server.ServicePool$2.run(ServicePool.java:78)
        at org.apache.openejb.server.ServicePool$3.run(ServicePool.java:101)
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:665)
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:690)
        at java.lang.Thread.run(Thread.java:810)


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