project_key: EDG

On Mon, 2011-01-24 at 09:54 +0100, Galder Zamarreño wrote:
On Jan 20, 2011, at 8:55 PM, Richard Achmatowicz wrote:

Hi Galder

Run into a couple of problems with the datagrid.sar deployment and JMX:
1. Infinispan is creating its own MBeanServer to register MBeans in, instead of using the JBoss MBeanServer

This is configurable via mBeanServerLookup attribute of globalJmxStatistics. By default it uses java.lang.management.ManagementFactory.getPlatformMBeanServer().

So, maybe it needs to retrieve the JBoss MBeanServer? I've just checked the AS6 configurations and they didn't have to modify this, at least not in XML (not sure if they do something programmatically, maybe Paul/Scott can confirm this):
https://svn.jboss.org/repos/jbossas/tags/6.0.0.Final/cluster/src/resources/infinispan/infinispan-configs.xml

To clarify, in AS6, an mbean server lookup is added programatically by
the CacheContainerFactory.  The factory serves a few purposes:
* To inject the JBoss mbean server
* To allow Infinispan to fetch its channel from the AS's JChannelFactory
* To wrap the DefaultCacheManager impl with a decorator that implements
a workaround ISPN-658
See here:
https://svn.jboss.org/repos/jbossas/projects/cluster/ha-server-ispn/tags/1.0.0.Final/src/main/java/org/jboss/ha/ispn/DefaultCacheContainerFactory.java

And here is this object's configuration:
 <bean name="CacheContainerFactory" class="org.jboss.ha.ispn.DefaultCacheContainerFactory">
   <constructor>
     <parameter><inject bean="JChannelFactory"/></parameter>
     <parameter><inject bean="JMXKernel" property="mbeanServer"/></parameter>
   </constructor>
 </bean>

So, perhaps EDG may want to leverage this?  This library
(ha-server-ispn, has no dependencies other than infinispan)

So, it would seem like AS6 uses the default platform MBeanServer whereas EAP5 uses the JBoss MBeanServer. IOW, for the datagrid profile, an implementation of org.infinispan.jmx.MBeanServerLookup is needed that does this:

import org.jboss.mx.util.MBeanServerLocator;

public class JBossMBeanServerLookup implements MBeanServerLookup {

  public MBeanServer getMBeanServer(Properties properties) {
     return MBeanServerLocator.locateJBoss();
  }

}

I'm not sure though where we'd put that code... I don't think it you can do it in cluster/ or any of the existing modules cos that would add infinispan as dependency to the default server profiles, which would bring a different JGroups as well, not good. The alternatives are:

- create a new maven module where you put this code in and make sure it gets shipped with the rest jars
- or, create a new maven module in infinispan where we add this code and its dependency, and add a dependency for that in EDG.

The first of the two options is the one that makes more sense since this is integration code and should live in AS/EDG.

2. DefaltCacheManager.start() seems to get called twice in startup, which causes "Could not register object with name" messages to appear in the console

Known issue in 4.2.0: https://issues.jboss.org/browse/ISPN-853


Any ideas? If this is not an quick answer, want me to set up a JIRA?
Details below.

I wanted to use JMX to talk to some of the Infinispan MBeans, so I set globalJmxStatistics=true in the global configuration.
Beacuse the JMX console is not enabled in EDG, I tried to use twiddle to interact with the MBeans but found none:

./twiddle.sh -s 192.168.0.100:1099 query '*:*'
// no MBeans listed in domain infinispan

It appears that Infinspan is creating its own MBeanServer when DefaultCacheManager is deployed, and not referencing the existing JBoss MBeanServer.
Here is some debugging output from the EDG console on startup. I added some logging statements to a few components:

14:38:32,334 INFO  [DefaultCacheManager] start() called (which calls CacheManagerJmxRegistration)
14:38:32,334 INFO  [CacheManagerJmxRegistration] MBean server = org.jboss.mx.server.MBeanServerImpl@21453d72[ defaultDomain='jboss' ]
14:38:32,336 INFO  [CacheManagerJmxRegistration] domains = [Ljava.lang.String;@476127f4
14:38:32,336 INFO  [CacheManagerJmxRegistration] in start()
14:38:32,425 INFO  [ComponentsJmxRegistration] mBeanServer = org.jboss.mx.server.MBeanServerImpl@b354f7e[ defaultDomain='null' ], jmxDomain = infinispan, groupName = type=CacheManager,name="DefaultCacheManager"
14:38:32,442 INFO  [ComponentsJmxRegistration] Trying to register org.infinispan.jmx.ResourceDMBean@4fa6cb2d under infinispan:type=CacheManager,name="DefaultCacheManager",component=CacheManager
14:38:32,442 INFO  [ComponentsJmxRegistration] Pre-existing object names:
14:38:32,442 INFO  [ComponentsJmxRegistration] on = java.lang:type=MemoryPool,name=PS Eden Space
14:38:32,443 INFO  [ComponentsJmxRegistration] on = java.lang:type=Memory
14:38:32,443 INFO  [ComponentsJmxRegistration] on = java.lang:type=MemoryPool,name=PS Survivor Space
14:38:32,443 INFO  [ComponentsJmxRegistration] on = java.lang:type=MemoryPool,name=Code Cache
14:38:32,443 INFO  [ComponentsJmxRegistration] on = java.lang:type=GarbageCollector,name=PS MarkSweep
14:38:32,443 INFO  [ComponentsJmxRegistration] on = java.lang:type=Runtime
14:38:32,443 INFO  [ComponentsJmxRegistration] on = java.lang:type=ClassLoading
14:38:32,443 INFO  [ComponentsJmxRegistration] on = JMImplementation:type=MBeanRegistry
14:38:32,443 INFO  [ComponentsJmxRegistration] on = JMImplementation:service=LoaderRepository,name=Default
14:38:32,443 INFO  [ComponentsJmxRegistration] on = java.lang:type=Threading
14:38:32,443 INFO  [ComponentsJmxRegistration] on = java.util.logging:type=Logging
14:38:32,443 INFO  [ComponentsJmxRegistration] on = java.lang:type=Compilation
14:38:32,443 INFO  [ComponentsJmxRegistration] on = com.sun.management:type=HotSpotDiagnostic
14:38:32,443 INFO  [ComponentsJmxRegistration] on = java.lang:type=MemoryPool,name=PS Perm Gen
14:38:32,443 INFO  [ComponentsJmxRegistration] on = java.lang:type=OperatingSystem
14:38:32,443 INFO  [ComponentsJmxRegistration] on = java.lang:type=GarbageCollector,name=PS Scavenge
14:38:32,443 INFO  [ComponentsJmxRegistration] on = java.lang:type=MemoryPool,name=PS Old Gen
14:38:32,444 INFO  [ComponentsJmxRegistration] on = JMImplementation:type=MBeanServerDelegate
14:38:32,444 INFO  [ComponentsJmxRegistration] on = java.lang:type=MemoryManager,name=CodeCacheManager
14:38:32,444 INFO  [DefaultCacheManager] start() called (which calls CacheManagerJmxRegistration)
14:38:32,445 INFO  [CacheManagerJmxRegistration] MBean server = org.jboss.mx.server.MBeanServerImpl@21453d72[ defaultDomain='jboss' ]
14:38:32,445 INFO  [CacheManagerJmxRegistration] domains = [Ljava.lang.String;@3d1cd90
14:38:32,445 INFO  [CacheManagerJmxRegistration] MBean server = org.jboss.mx.server.MBeanServerImpl@b354f7e[ defaultDomain='null' ]
14:38:32,445 INFO  [CacheManagerJmxRegistration] domains = [Ljava.lang.String;@430eaae5
14:38:32,445 INFO  [CacheManagerJmxRegistration] in start()
14:38:32,445 INFO  [ComponentsJmxRegistration] mBeanServer = org.jboss.mx.server.MBeanServerImpl@b354f7e[ defaultDomain='null' ], jmxDomain = infinispan, groupName = type=CacheManager,name="DefaultCacheManager"
14:38:32,454 INFO  [ComponentsJmxRegistration] Trying to register org.infinispan.jmx.ResourceDMBean@77f5c2c7 under infinispan:type=CacheManager,name="DefaultCacheManager",component=CacheManager
14:38:32,455 INFO  [ComponentsJmxRegistration] Pre-existing object names:
14:38:32,455 INFO  [ComponentsJmxRegistration] on = java.lang:type=MemoryPool,name=PS Eden Space
14:38:32,455 INFO  [ComponentsJmxRegistration] on = java.lang:type=Memory
14:38:32,455 INFO  [ComponentsJmxRegistration] on = java.lang:type=MemoryPool,name=PS Survivor Space
14:38:32,455 INFO  [ComponentsJmxRegistration] on = java.lang:type=MemoryPool,name=Code Cache
14:38:32,455 INFO  [ComponentsJmxRegistration] on = java.lang:type=GarbageCollector,name=PS MarkSweep
14:38:32,455 INFO  [ComponentsJmxRegistration] on = java.lang:type=Runtime
14:38:32,455 INFO  [ComponentsJmxRegistration] on = java.lang:type=ClassLoading
14:38:32,459 INFO  [ComponentsJmxRegistration] on = JMImplementation:type=MBeanRegistry
14:38:32,459 INFO  [ComponentsJmxRegistration] on = JMImplementation:service=LoaderRepository,name=Default
14:38:32,459 INFO  [ComponentsJmxRegistration] on = java.lang:type=Threading
14:38:32,459 INFO  [ComponentsJmxRegistration] on = infinispan:type=CacheManager,name="DefaultCacheManager",component=CacheManager
14:38:32,459 INFO  [ComponentsJmxRegistration] on = java.util.logging:type=Logging
14:38:32,459 INFO  [ComponentsJmxRegistration] on = java.lang:type=Compilation
14:38:32,460 INFO  [ComponentsJmxRegistration] on = com.sun.management:type=HotSpotDiagnostic
14:38:32,460 INFO  [ComponentsJmxRegistration] on = java.lang:type=MemoryPool,name=PS Perm Gen
14:38:32,460 INFO  [ComponentsJmxRegistration] on = java.lang:type=OperatingSystem
14:38:32,460 INFO  [ComponentsJmxRegistration] on = java.lang:type=GarbageCollector,name=PS Scavenge
14:38:32,460 INFO  [ComponentsJmxRegistration] on = java.lang:type=MemoryPool,name=PS Old Gen
14:38:32,460 INFO  [ComponentsJmxRegistration] on = JMImplementation:type=MBeanServerDelegate
14:38:32,460 INFO  [ComponentsJmxRegistration] on = java.lang:type=MemoryManager,name=CodeCacheManager
14:38:32,460 INFO  [ComponentsJmxRegistration] Could not register object with name(ra): infinispan:type=CacheManager,name="DefaultCacheManager",component=CacheManager
14:38:32,953 INFO  [JGroupsTransport] Starting JGroups Channel

It also seems that DefaultCacheManager.start() is getting called twice, and the first registration of CacheManager succeeds, but the second attempt fails.




--
Galder Zamarreño
Sr. Software Engineer
Infinispan, JBoss Cache