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  1. WildFly
  2. WFLY-6685

Cache container enable statistics can lead to classloader leak

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      1. in standalone.xml enable the statistics on the web cache container
      2. deploy a basic application
      3. undeploy the application
      4. observes that the MBean is still registered
      5. re-deploy the application
      6. observes the MBean is still registered and a new MBean is getting registered
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      in standalone.xml enable the statistics on the web cache container deploy a basic application undeploy the application observes that the MBean is still registered re-deploy the application observes the MBean is still registered and a new MBean is getting registered

      In standalone.xml, if we enable statistics such as:

                  <cache-container name="web" default-cache="repl" module="org.wildfly.clustering.web.infinispan" statistics-enabled="true">
                <transport lock-timeout="60000"/>
                <replicated-cache name="repl" statistics-enabled="true" mode="ASYNC">
                    <locking isolation="READ_COMMITTED"/>
                    <transaction locking="OPTIMISTIC" mode="BATCH"/>
                    <state-transfer chunk-size="512" timeout="240000"/>
                </replicated-cache>
            </cache-container>

      The following MBean:

      jboss.infinispan:cluster=web,type=channel

      is getting eventually registered when deploying any application.

      When undeploying that application, the MBean is not getting unregistered and thus can leak pretty much anything.

      Also, if you try to deploy the very same application right after another MBean will get registered:

      jboss.infinispan2:cluster=web,type=channel

      Note: cache enable-statistics=true doesn't seems to leak anything.

            pferraro@redhat.com Paul Ferraro
            mathieu@mathieulachance.com Mathieu Lachance (Inactive)
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              Created:
              Updated:
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