glassfish
  1. glassfish
  2. GLASSFISH-3067

Could not get Attributes for WebModule MBean

    Details

    • Type: Bug Bug
    • Status: Open
    • Priority: Minor Minor
    • Resolution: Unresolved
    • Affects Version/s: 9.1pe
    • Fix Version/s: not determined
    • Component/s: web_container
    • Labels:
      None
    • Environment:

      Operating System: All
      Platform: All

    • Issuezilla Id:
      3,067

      Description

      Running the AMX unit test com.sun.enterprise.management.base.GetSetAttributeTest results in the
      following failures:

      WARNING: Could not get Attributes for "amx:j2eeType=WebModule,name=//__asadmin/
      web1,J2EEServer=server,J2EEApplication=null"
      DefaultWebXML

      WARNING: Could not get Attributes for "amx:j2eeType=WebModule,name=//
      server/,J2EEServer=server,J2EEApplication=null"
      DefaultWebXML

      WARNING: Could not get Attributes for "amx:j2eeType=WebModule,name=//server/__wstx-
      services,J2EEServer=server,J2EEApplication=null"
      DefaultWebXML
      Override

      AMX gets these Attributes from the underlying com.sun.appserv MBean. The getting of them seems to
      be flaky. When I ran the test again, I see different failures:

      WARNING: Could not get Attributes for "amx:j2eeType=WebModule,name=//
      server/,J2EEServer=server,J2EEApplication=null"
      HasWebServices

      WARNING: Attribute HasWebServices failed with class javax.management.AttributeNotFoundException:
      HasWebServices

      WARNING: Could not get Attributes for "amx:j2eeType=WebModule,name=//server/__wstx-
      services,J2EEServer=server,J2EEApplication=null"
      HasWebServices

      WARNING: Attribute HasWebServices failed with class javax.management.AttributeNotFoundException:
      HasWebServices

        Activity

        Hide
        jluehe added a comment -

        Hi Lloyd, when filing a regression bug, it would help if the exact build number
        on which the regression was noticed was included in the bug report.

        The only recent change in the JMX area that might be related has been an
        incremental fix for:

        https://glassfish.dev.java.net/issues/show_bug.cgi?id=2999
        ("Web app in EAR breaks getChildTargetModuleID")

        which added "name" to the list of MBean attributes of a web module, but I don't
        see how this could have caused what you are seeing. Also, when accessing a web
        module MBean via the HTML adaptor, I still see "hasWebServices", along with the
        new "name" attribute, exposed.

        Show
        jluehe added a comment - Hi Lloyd, when filing a regression bug, it would help if the exact build number on which the regression was noticed was included in the bug report. The only recent change in the JMX area that might be related has been an incremental fix for: https://glassfish.dev.java.net/issues/show_bug.cgi?id=2999 ("Web app in EAR breaks getChildTargetModuleID") which added "name" to the list of MBean attributes of a web module, but I don't see how this could have caused what you are seeing. Also, when accessing a web module MBean via the HTML adaptor, I still see "hasWebServices", along with the new "name" attribute, exposed.
        Hide
        llc added a comment -

        It might be that this isuse has existed for some time (many months). That's why I can't say when.

        Please note that some of the MBeans have the Attribute, and some do not. So you can't just check one
        of them and assume it's OK.

        Show
        llc added a comment - It might be that this isuse has existed for some time (many months). That's why I can't say when. Please note that some of the MBeans have the Attribute, and some do not. So you can't just check one of them and assume it's OK.
        Hide
        jluehe added a comment -
            • Issue 3070 has been marked as a duplicate of this issue. ***
        Show
        jluehe added a comment - Issue 3070 has been marked as a duplicate of this issue. ***
        Hide
        jluehe added a comment -

        I've attached a simple WAR whose servlet retrieves all MBeans of type
        "j2eeType=WebModule", and then logs (to server.log) the MBean's object name
        along with all the MBean's attribute names and values.

        Please deploy the WAR and access its servlet at this path: /mbean/MBeanServlet

        You will see that for each web module, the "hasWebServices" attribute can be
        read successfully and returns the expected value: It returns "false" for all the
        system apps except for:

        com.sun.appserv:j2eeType=WebModule,name=//server/__wstx-services,J2EEApplication=null,J2EEServer=server|#]

        for which it returns "true".

        So, I don't think this is a web container issue.

        Please assign back to me if you feel differently.

        Show
        jluehe added a comment - I've attached a simple WAR whose servlet retrieves all MBeans of type "j2eeType=WebModule", and then logs (to server.log) the MBean's object name along with all the MBean's attribute names and values. Please deploy the WAR and access its servlet at this path: /mbean/MBeanServlet You will see that for each web module, the "hasWebServices" attribute can be read successfully and returns the expected value: It returns "false" for all the system apps except for: com.sun.appserv:j2eeType=WebModule,name=//server/__wstx-services,J2EEApplication=null,J2EEServer=server|#] for which it returns "true". So, I don't think this is a web container issue. Please assign back to me if you feel differently.
        Hide
        jluehe added a comment -

        Created an attachment (id=936)
        Test webapp

        Show
        jluehe added a comment - Created an attachment (id=936) Test webapp
        Hide
        gfbugbridge added a comment -

        <BT6562475>

        Show
        gfbugbridge added a comment - <BT6562475>
        Hide
        llc added a comment -

        The problem is flaky success (or failure) of the Attributes. AMX just tries to get the Attributes, and they
        sporadicaly fail. Yes, I think it's a problem in the com.sun.appserv MBean.

        Quite possibly it's a timing issue--some sort of initialization problem. It is most definitely not an AMX
        problem, and it most definitely exists.

        Show
        llc added a comment - The problem is flaky success (or failure) of the Attributes. AMX just tries to get the Attributes, and they sporadicaly fail. Yes, I think it's a problem in the com.sun.appserv MBean. Quite possibly it's a timing issue--some sort of initialization problem. It is most definitely not an AMX problem, and it most definitely exists.
        Hide
        llc added a comment -

        [First, I don't know if this is a WebModule problem or an 'admin' problem--I just know it's not an AMX
        problem.]

        I tried jmxcmd (command line interface) directly against the com.sun.appserv:j2eeType=WebModule
        MBeans, and the attributes cannot be obtained; see below; nothing is returned:

        jmxcmd> find com.sun.appserv:j2eeType=WebModule
        com.sun.appserv:j2eeType=WebModule,name=//__asadmin/,J2EEServer=server,J2EEApplication=null
        com.sun.appserv:j2eeType=WebModule,name=//__asadmin/
        web1,J2EEServer=server,J2EEApplication=null
        com.sun.appserv:j2eeType=WebModule,name=//server/,J2EEServer=server,J2EEApplication=null
        com.sun.appserv:j2eeType=WebModule,name=//server/
        _JWSappclients,J2EEServer=server,J2EEApplication=_JWSappclients
        com.sun.appserv:j2eeType=WebModule,name=//server/__wstx-
        services,J2EEServer=server,J2EEApplication=null
        jmxcmd> get tldScanTime com.sun.appserv:j2eeType=WebModule,*
        jmxcmd> get defaultWebXml com.sun.appserv:j2eeType=WebModule,*
        jmxcmd>

        Here is a stack crawl from the server side showing an example of the failure:

        [#|2007-05-29T16:43:22.405-0700|WARNING|sun-appserver9.1|javax.enterprise.system.stream.err|
        _ThreadID=21;_ThreadName=RMI TCP Connection(18)192.168.1.5;_RequestID=88ba213a
        b009-4816-91fe-cd2b79a161e2;|
        javax.management.AttributeNotFoundException: Cannot find attribute tldScanTime get method name
        at com.sun.org.apache.commons.modeler.BaseModelMBean.getAttribute(BaseModelMBean.java:
        313)
        at com.sun.jmx.mbeanserver.DynamicMetaDataImpl.getAttribute(DynamicMetaDataImpl.java:96)
        at com.sun.jmx.mbeanserver.MetaDataImpl.getAttribute(MetaDataImpl.java:181)
        at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.getAttribute
        (DefaultMBeanServerInterceptor.java:638)
        at com.sun.jmx.mbeanserver.JmxMBeanServer.getAttribute(JmxMBeanServer.java:659)
        at sun.reflect.GeneratedMethodAccessor17.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:585)
        at com.sun.enterprise.admin.util.proxy.ProxyClass.invoke(ProxyClass.java:90)
        at $Proxy1.getAttribute(Unknown Source)
        at com.sun.enterprise.admin.server.core.jmx.SunoneInterceptor.getAttribute
        (SunoneInterceptor.java:317)
        at com.sun.enterprise.interceptor.DynamicInterceptor.getAttribute(DynamicInterceptor.java:192)
        at com.sun.enterprise.management.support.DelegateToMBeanDelegate.getAttribute
        (DelegateToMBeanDelegate.java:122)
        at com.sun.enterprise.management.support.MappedDelegate.getAttribute(MappedDelegate.java:
        244)
        at com.sun.enterprise.management.support.AMXImplBase.delegateGetAttribute(AMXImplBase.java:
        828)
        at com.sun.enterprise.management.support.AMXImplBase.getAttributeInternal(AMXImplBase.java:
        1061)
        at com.sun.enterprise.management.support.AMXImplBase.getAttribute(AMXImplBase.java:1020)
        at com.sun.enterprise.management.support.AMXImplBase.getAttributes(AMXImplBase.java:1119)
        at com.sun.jmx.mbeanserver.DynamicMetaDataImpl.getAttributes(DynamicMetaDataImpl.java:125)
        at com.sun.jmx.mbeanserver.MetaDataImpl.getAttributes(MetaDataImpl.java:189)
        at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.getAttributes
        (DefaultMBeanServerInterceptor.java:696)
        at com.sun.jmx.mbeanserver.JmxMBeanServer.getAttributes(JmxMBeanServer.java:686)
        at com.sun.enterprise.interceptor.DynamicInterceptor.getAttributes(DynamicInterceptor.java:232)
        at javax.management.remote.rmi.RMIConnectionImpl.doOperation(RMIConnectionImpl.java:1389)
        at javax.management.remote.rmi.RMIConnectionImpl.access$100(RMIConnectionImpl.java:81)
        at javax.management.remote.rmi.RMIConnectionImpl$PrivilegedOperation.run
        (RMIConnectionImpl.java:1245)
        at javax.management.remote.rmi.RMIConnectionImpl.doPrivilegedOperation
        (RMIConnectionImpl.java:1341)
        at javax.management.remote.rmi.RMIConnectionImpl.getAttributes(RMIConnectionImpl.java:633)
        at sun.reflect.GeneratedMethodAccessor286.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:585)
        at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:294)
        at sun.rmi.transport.Transport$1.run(Transport.java:153)
        at java.security.AccessController.doPrivileged(Native Method)
        at sun.rmi.transport.Transport.serviceCall(Transport.java:149)
        at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:466)
        at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:707)
        at java.lang.Thread.run(Thread.java:613)

        Show
        llc added a comment - [First, I don't know if this is a WebModule problem or an 'admin' problem--I just know it's not an AMX problem.] I tried jmxcmd (command line interface) directly against the com.sun.appserv:j2eeType=WebModule MBeans, and the attributes cannot be obtained; see below; nothing is returned: jmxcmd> find com.sun.appserv:j2eeType=WebModule com.sun.appserv:j2eeType=WebModule,name=//__asadmin/,J2EEServer=server,J2EEApplication=null com.sun.appserv:j2eeType=WebModule,name=//__asadmin/ web1,J2EEServer=server,J2EEApplication=null com.sun.appserv:j2eeType=WebModule,name=//server/,J2EEServer=server,J2EEApplication=null com.sun.appserv:j2eeType=WebModule,name=//server/ _ JWSappclients,J2EEServer=server,J2EEApplication= _JWSappclients com.sun.appserv:j2eeType=WebModule,name=//server/__wstx- services,J2EEServer=server,J2EEApplication=null jmxcmd> get tldScanTime com.sun.appserv:j2eeType=WebModule,* jmxcmd> get defaultWebXml com.sun.appserv:j2eeType=WebModule,* jmxcmd> Here is a stack crawl from the server side showing an example of the failure: [#|2007-05-29T16:43:22.405-0700|WARNING|sun-appserver9.1|javax.enterprise.system.stream.err| _ThreadID=21;_ThreadName=RMI TCP Connection(18) 192.168.1.5;_RequestID=88ba213a b009-4816-91fe-cd2b79a161e2;| javax.management.AttributeNotFoundException: Cannot find attribute tldScanTime get method name at com.sun.org.apache.commons.modeler.BaseModelMBean.getAttribute(BaseModelMBean.java: 313) at com.sun.jmx.mbeanserver.DynamicMetaDataImpl.getAttribute(DynamicMetaDataImpl.java:96) at com.sun.jmx.mbeanserver.MetaDataImpl.getAttribute(MetaDataImpl.java:181) at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.getAttribute (DefaultMBeanServerInterceptor.java:638) at com.sun.jmx.mbeanserver.JmxMBeanServer.getAttribute(JmxMBeanServer.java:659) at sun.reflect.GeneratedMethodAccessor17.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:585) at com.sun.enterprise.admin.util.proxy.ProxyClass.invoke(ProxyClass.java:90) at $Proxy1.getAttribute(Unknown Source) at com.sun.enterprise.admin.server.core.jmx.SunoneInterceptor.getAttribute (SunoneInterceptor.java:317) at com.sun.enterprise.interceptor.DynamicInterceptor.getAttribute(DynamicInterceptor.java:192) at com.sun.enterprise.management.support.DelegateToMBeanDelegate.getAttribute (DelegateToMBeanDelegate.java:122) at com.sun.enterprise.management.support.MappedDelegate.getAttribute(MappedDelegate.java: 244) at com.sun.enterprise.management.support.AMXImplBase.delegateGetAttribute(AMXImplBase.java: 828) at com.sun.enterprise.management.support.AMXImplBase.getAttributeInternal(AMXImplBase.java: 1061) at com.sun.enterprise.management.support.AMXImplBase.getAttribute(AMXImplBase.java:1020) at com.sun.enterprise.management.support.AMXImplBase.getAttributes(AMXImplBase.java:1119) at com.sun.jmx.mbeanserver.DynamicMetaDataImpl.getAttributes(DynamicMetaDataImpl.java:125) at com.sun.jmx.mbeanserver.MetaDataImpl.getAttributes(MetaDataImpl.java:189) at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.getAttributes (DefaultMBeanServerInterceptor.java:696) at com.sun.jmx.mbeanserver.JmxMBeanServer.getAttributes(JmxMBeanServer.java:686) at com.sun.enterprise.interceptor.DynamicInterceptor.getAttributes(DynamicInterceptor.java:232) at javax.management.remote.rmi.RMIConnectionImpl.doOperation(RMIConnectionImpl.java:1389) at javax.management.remote.rmi.RMIConnectionImpl.access$100(RMIConnectionImpl.java:81) at javax.management.remote.rmi.RMIConnectionImpl$PrivilegedOperation.run (RMIConnectionImpl.java:1245) at javax.management.remote.rmi.RMIConnectionImpl.doPrivilegedOperation (RMIConnectionImpl.java:1341) at javax.management.remote.rmi.RMIConnectionImpl.getAttributes(RMIConnectionImpl.java:633) at sun.reflect.GeneratedMethodAccessor286.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:585) at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:294) at sun.rmi.transport.Transport$1.run(Transport.java:153) at java.security.AccessController.doPrivileged(Native Method) at sun.rmi.transport.Transport.serviceCall(Transport.java:149) at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:466) at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:707) at java.lang.Thread.run(Thread.java:613)
        Hide
        jluehe added a comment -
            • Issue 3074 has been marked as a duplicate of this issue. ***
        Show
        jluehe added a comment - Issue 3074 has been marked as a duplicate of this issue. ***
        Hide
        jluehe added a comment -

        Hmm, this seems to be working for me:

        jmxcmd> connect --protocol sun-as-rmi --port 8686 --user admin --password-file
        /home/luehe/pwd local-rmi
        Established connection to local-rmi using sun-as-rmi
        Connection local-rmi
        (USER=admin,PASSWORD_FILE=/home/luehe/pwd,PASSWORD=adminadmin,PROTOCOL=sun-as-rmi,cache-mbean-info=false,HOST=localhost,PORT=8686)
        is now the active connection

        jmxcmd> find com.sun.appserv:j2eeType=WebModule
        com.sun.appserv:j2eeType=WebModule,name=//__asadmin/,J2EEServer=server,J2EEApplication=null
        com.sun.appserv:j2eeType=WebModule,name=//__asadmin/web1,J2EEServer=server,J2EEApplication=null
        com.sun.appserv:j2eeType=WebModule,name=//server/,J2EEServer=server,J2EEApplication=null
        com.sun.appserv:j2eeType=WebModule,name=//server/_JWSappclients,J2EEServer=server,J2EEApplication=_JWSappclients
        com.sun.appserv:j2eeType=WebModule,name=//server/__wstx-services,J2EEServer=server,J2EEApplication=null

        jmxcmd> get tldScanTime com.sun.appserv:j2eeType=WebModule,*
        --com.sun.appserv:j2eeType=WebModule,name=//__asadmin/web1,J2EEApplication=null,J2EEServer=server--
        tldScanTime=6

        --com.sun.appserv:j2eeType=WebModule,name=//server/__wstx-services,J2EEApplication=null,J2EEServer=server--
        tldScanTime=2

        --com.sun.appserv:j2eeType=WebModule,name=//server/,J2EEApplication=null,J2EEServer=server--
        tldScanTime=1

        --com.sun.appserv:j2eeType=WebModule,name=//server/_JWSappclients,J2EEApplication=_JWSappclients,J2EEServer=server--
        tldScanTime=1

        --com.sun.appserv:j2eeType=WebModule,name=//__asadmin/,J2EEApplication=null,J2EEServer=server--
        tldScanTime=670

        jmxcmd> get hasWebServices com.sun.appserv:j2eeType=WebModule,*
        --com.sun.appserv:j2eeType=WebModule,name=//__asadmin/web1,J2EEApplication=null,J2EEServer=server--
        hasWebServices=false

        --com.sun.appserv:j2eeType=WebModule,name=//server/__wstx-services,J2EEApplication=null,J2EEServer=server--
        hasWebServices=true

        --com.sun.appserv:j2eeType=WebModule,name=//server/,J2EEApplication=null,J2EEServer=server--
        hasWebServices=false

        --com.sun.appserv:j2eeType=WebModule,name=//server/_JWSappclients,J2EEApplication=_JWSappclients,J2EEServer=server--
        hasWebServices=false

        --com.sun.appserv:j2eeType=WebModule,name=//__asadmin/,J2EEApplication=null,J2EEServer=server--
        hasWebServices=false

        Show
        jluehe added a comment - Hmm, this seems to be working for me: jmxcmd> connect --protocol sun-as-rmi --port 8686 --user admin --password-file /home/luehe/pwd local-rmi Established connection to local-rmi using sun-as-rmi Connection local-rmi (USER=admin,PASSWORD_FILE=/home/luehe/pwd,PASSWORD=adminadmin,PROTOCOL=sun-as-rmi,cache-mbean-info=false,HOST=localhost,PORT=8686) is now the active connection jmxcmd> find com.sun.appserv:j2eeType=WebModule com.sun.appserv:j2eeType=WebModule,name=//__asadmin/,J2EEServer=server,J2EEApplication=null com.sun.appserv:j2eeType=WebModule,name=//__asadmin/web1,J2EEServer=server,J2EEApplication=null com.sun.appserv:j2eeType=WebModule,name=//server/,J2EEServer=server,J2EEApplication=null com.sun.appserv:j2eeType=WebModule,name=//server/_ JWSappclients,J2EEServer=server,J2EEApplication= _JWSappclients com.sun.appserv:j2eeType=WebModule,name=//server/__wstx-services,J2EEServer=server,J2EEApplication=null jmxcmd> get tldScanTime com.sun.appserv:j2eeType=WebModule,* -- com.sun.appserv:j2eeType=WebModule,name=//__asadmin/web1,J2EEApplication=null,J2EEServer=server -- tldScanTime=6 -- com.sun.appserv:j2eeType=WebModule,name=//server/__wstx-services,J2EEApplication=null,J2EEServer=server -- tldScanTime=2 -- com.sun.appserv:j2eeType=WebModule,name=//server/,J2EEApplication=null,J2EEServer=server -- tldScanTime=1 -- com.sun.appserv:j2eeType=WebModule,name=//server/_ JWSappclients,J2EEApplication= _JWSappclients,J2EEServer=server -- tldScanTime=1 -- com.sun.appserv:j2eeType=WebModule,name=//__asadmin/,J2EEApplication=null,J2EEServer=server -- tldScanTime=670 jmxcmd> get hasWebServices com.sun.appserv:j2eeType=WebModule,* -- com.sun.appserv:j2eeType=WebModule,name=//__asadmin/web1,J2EEApplication=null,J2EEServer=server -- hasWebServices=false -- com.sun.appserv:j2eeType=WebModule,name=//server/__wstx-services,J2EEApplication=null,J2EEServer=server -- hasWebServices=true -- com.sun.appserv:j2eeType=WebModule,name=//server/,J2EEApplication=null,J2EEServer=server -- hasWebServices=false -- com.sun.appserv:j2eeType=WebModule,name=//server/_ JWSappclients,J2EEApplication= _JWSappclients,J2EEServer=server -- hasWebServices=false -- com.sun.appserv:j2eeType=WebModule,name=//__asadmin/,J2EEApplication=null,J2EEServer=server -- hasWebServices=false
        Hide
        llc added a comment -

        It works for me too, on a dual core machine. On quad core it fails.

        Show
        llc added a comment - It works for me too, on a dual core machine. On quad core it fails.
        Hide
        jluehe added a comment -

        This does not seem to be a regression after all. Therefore, removing
        "regression" from issue summary.

        Per llc:

        It's a very strange bug--different Attributes fail at different times on my
        quad-core machine. The dual core seems not to fail.

        Downgrading to a P4.

        Show
        jluehe added a comment - This does not seem to be a regression after all. Therefore, removing "regression" from issue summary. Per llc: It's a very strange bug--different Attributes fail at different times on my quad-core machine. The dual core seems not to fail. Downgrading to a P4.
        Hide
        jluehe added a comment -

        Changing Summary line, since this is not a regression

        Show
        jluehe added a comment - Changing Summary line, since this is not a regression
        Hide
        sirajg added a comment -
            • Issue 3073 has been marked as a duplicate of this issue. ***
        Show
        sirajg added a comment - Issue 3073 has been marked as a duplicate of this issue. ***
        Hide
        Tom Mueller added a comment -

        Bulk update to change fix version to "not determined" for all issues still open but with a fix version for a released version.

        Show
        Tom Mueller added a comment - Bulk update to change fix version to "not determined" for all issues still open but with a fix version for a released version.
        Hide
        guojje added a comment -

        it is absolutely a issues, how soon will it be fixed?

        Show
        guojje added a comment - it is absolutely a issues, how soon will it be fixed?
        Hide
        guojje added a comment -

        I have fixed it. it is a thread safe issues.

        In class ManageMbean of commons-modeler project, the method createMbeanInfo does not aquire lock when it accessed the fields
        (contains attributes,notification and so on).

        so it is necessary to add syschronized(attributes) when access attributes.

        Show
        guojje added a comment - I have fixed it. it is a thread safe issues. In class ManageMbean of commons-modeler project, the method createMbeanInfo does not aquire lock when it accessed the fields (contains attributes,notification and so on). so it is necessary to add syschronized(attributes) when access attributes.

          People

          • Assignee:
            jluehe
            Reporter:
            llc
          • Votes:
            2 Vote for this issue
            Watchers:
            0 Start watching this issue

            Dates

            • Created:
              Updated: