Hi Sean,

AFAIK this means you’re running two instances of XWiki in the same JVM at the 
same time. Is that so?

Thanks
-Vincent

> On 23 Jun 2016, at 15:51, Sean Whalen <whalens...@gmail.com> wrote:
> 
> Hi,
> 
> I just upgraded XWiki 8.1 to 8.1+1 on Ubuntu Server 16.04 LTS using the
> XWiki Debain repository. Now I get an HTTP error with this as the root
> cause:
> 
> org.infinispan.jmx.JmxDomainConflictException: ISPN000034: There's already
> a JMX MBean instance type=CacheManager,name="xwiki" already registered
> under 'org.xwiki.infinispan' JMX domain. If you want to allow multiple
> instances configured with same JMX domain enable 'allowDuplicateDomains'
> attribute in 'globalJmxStatistics' config element
>        at org.infinispan.jmx.JmxUtil.buildJmxDomain(JmxUtil.java:52)
>        at
> org.infinispan.jmx.CacheManagerJmxRegistration.updateDomain(CacheManagerJmxRegistration.java:79)
>        at
> org.infinispan.jmx.CacheManagerJmxRegistration.buildRegistrar(CacheManagerJmxRegistration.java:73)
>        at
> org.infinispan.jmx.AbstractJmxRegistration.registerMBeans(AbstractJmxRegistration.java:37)
>        at
> org.infinispan.jmx.CacheManagerJmxRegistration.start(CacheManagerJmxRegistration.java:41)
>        at
> org.infinispan.manager.DefaultCacheManager.start(DefaultCacheManager.java:657)
>        at
> org.infinispan.manager.DefaultCacheManager.<init>(DefaultCacheManager.java:310)
>        at
> org.infinispan.manager.DefaultCacheManager.<init>(DefaultCacheManager.java:285)
>        at
> org.infinispan.manager.DefaultCacheManager.<init>(DefaultCacheManager.java:271)
>        at
> org.xwiki.cache.infinispan.internal.InfinispanCacheFactory.initialize(InfinispanCacheFactory.java:106)
>        at
> org.xwiki.component.embed.InitializableLifecycleHandler.handle(InitializableLifecycleHandler.java:39)
>        at
> org.xwiki.component.embed.EmbeddableComponentManager.createInstance(EmbeddableComponentManager.java:322)
>        at
> org.xwiki.component.embed.EmbeddableComponentManager.getComponentInstance(EmbeddableComponentManager.java:424)
>        at
> org.xwiki.component.embed.EmbeddableComponentManager.getComponentInstance(EmbeddableComponentManager.java:392)
>        ... 53 common frames omitted
> 
> How can I fix this?
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