[infinispan-dev] Clustering standalone Infinispan w/ WF running Infinispan

Tristan Tarrant ttarrant at redhat.com
Fri Oct 10 09:53:49 EDT 2014 

Markdown chewed on my markup :)

https://raw.githubusercontent.com/tristantarrant/infinispan-playground-hybrid/master/README.md

On 10/10/14 15:42, Kurt T Stam wrote:
> Hi Tristan,
>
> I'm trying to follow your instructions but am I bit confused by the 
> following:
>
> "You will also need to modify the following file:
>
> modules/system/layers/base/org/jboss/as/clustering/infinispan/main/module.xml 
>
>
> by adding the following line to its dependencies:"
>
> What do I have to add?
>
> Thx,
>
> --Kurt
>
>
>
> On 10/2/14, 9:21 AM, Tristan Tarrant wrote:
>> I have successfully created a "hybrid" cluster between an application 
>> using Infinispan in embedded mode and an Infinispan server by doing 
>> the following on the embedded side:
>>
>> - use a JGroups Channel wrapped in a MuxHandler
>> - use a custom class resolver which simulates (or rather... hacks) 
>> the behaviour of the ModularClassResolver when not using modules
>>
>> You can find the code at my personal GitHub repo:
>>
>> https://github.com/tristantarrant/infinispan-playground/tree/master/src/main/java/net/dataforte/infinispan/hybrid 
>>
>>
>> suggestions and improvements are welcome.
>>
>> Tristan
>>
>> On 30/09/14 10:01, Stelios Koussouris wrote:
>>> Hi,
>>>
>>> To give a bit of context on this. We are doing a POC where the 
>>> customer wishes to utilize JDG to speed up their application. We 
>>> need (due to some customer requirements) to cluster
>>> EMBEDDED JDG (infinispan library mode) with REMOTE JDG (Infinispan 
>>> Server) nodes. The infinispan jars should be the same as they are 
>>> only libraries and they
>>> are on the same version. However, during "clustering" of the caches 
>>> we started seeing errors which looked like there were due to the 
>>> fact that the clustering of the caches contained different
>>> info between the 2 types of cache instantiation (embedded vs server).
>>>
>>> The result was to for a suggestion to create our own MuxChannel (I 
>>> don't know if we have any other alternatives at this stage to 
>>> cluster embedded with server infinispan caches) but at the moment we 
>>> are facing https://gist.github.com/skoussou/5edc5689446b67f85ae8
>>>
>>> Regards,
>>>
>>> Stylianos Kousouris
>>> Red Hat Middleware Consultant
>>>
>>> ----- Original Message -----
>>> From: "Tristan Tarrant" <ttarrant at redhat.com>
>>> To: "infinispan -Dev List" <infinispan-dev at lists.jboss.org>, "Kurt T 
>>> Stam" <kurt.stam at jboss.com>
>>> Cc: "Stelios Koussouris" <stkousso at redhat.com>, "Richard 
>>> Achmatowicz" <rachmato at redhat.com>
>>> Sent: Tuesday, 30 September, 2014 8:02:27 AM
>>> Subject: Re: [infinispan-dev] Clustering standalone Infinispan w/ WF 
>>> running Infinispan
>>>
>>> I don't know what Kurt is doing, but Stelios is attempting to 
>>> cluster an
>>> application using embedded Infinispan deployed within WF together with
>>> an Infinispan Server instance.
>>> The application is managing its own caches, and therefore it is not
>>> interacting with the underlying Infinispan and JGroups subsystems in 
>>> WF.
>>> Infinispan Server uses its Infinispan and JGroups subsystems (which are
>>> forked from WF's) and therefore are using MuxChannels.
>>>
>>> I told Stelios to use a MuxChannel-wrapped Channel in his application
>>> and it solved part of the issue (he was initially importing the one
>>> included in the WF's jgroups subsystem, but now he's using his local
>>> copy), but now he has run into further problems and I believe what Paul
>>> & Dennis have written might be correct.
>>>
>>> The code that configures this is in
>>> EmbeddedCacheManagerConfigurationService:
>>>
>>> GlobalConfigurationBuilder builder = new GlobalConfigurationBuilder();
>>> ModuleLoader moduleLoader = this.dependencies.getModuleLoader();
>>> builder.serialization().classResolver(ModularClassResolver.getInstance(moduleLoader)); 
>>>
>>>
>>> I don't know how you'd get a ModuleLoader from within a WF deployment,
>>> but I'm sure it can be done.
>>>
>>> Tristan
>>>
>>> On 29/09/14 18:57, Paul Ferraro wrote:
>>>> You should not need to use a MuxChannel.  This would only be 
>>>> necessary if there are other EAP services sharing the channel.  
>>>> Using a MuxChannel allows your standalone Infinispan instance to 
>>>> filter these irrelevant messages.  However, in JDG, there should be 
>>>> no other services other than Infinispan using the channel - hence 
>>>> the MuxChannel stuff is unnecessary.
>>>>
>>>> I think Dennis earlier response was spot on.  EAP/JDG configures 
>>>> it's cache managers using a ModularClassResolver (which includes a 
>>>> module name along with the class name when marshalling).  Your 
>>>> standalone Infinispan instances do not use this and therefore 
>>>> cannot make sense of the message body.
>>>>
>>>> Paul
>>>>
>>>> ----- Original Message -----
>>>>> From: "Kurt T Stam" <kurt.stam at jboss.com>
>>>>> To: "Stelios Koussouris" <stkousso at redhat.com>, "Radoslav Husar" 
>>>>> <rhusar at redhat.com>
>>>>> Cc: "Galder Zamarreño" <galder at redhat.com>, "Paul Ferraro" 
>>>>> <paul.ferraro at redhat.com>, "Richard Achmatowicz"
>>>>> <rachmato at redhat.com>, "infinispan -Dev List" 
>>>>> <infinispan-dev at lists.jboss.org>
>>>>> Sent: Monday, September 29, 2014 11:39:59 AM
>>>>> Subject: Re: Clustering standalone Infinispan w/ WF running 
>>>>> Infinispan
>>>>>
>>>>> Thanks for following up Stelios, I think Galder is traveling the 
>>>>> next 2
>>>>> weeks.
>>>>>
>>>>> So - do we need fixes on both ends then so that the boot order 
>>>>> does not
>>>>> matter? In which project(s) would we apply
>>>>> there changes? Or can they be applied in the end-user's code?
>>>>>
>>>>> Thx,
>>>>>
>>>>> --Kurt
>>>>>
>>>>>
>>>>>
>>>>> On 9/26/14, 11:19 AM, Stelios Koussouris wrote:
>>>>>> Hi,
>>>>>>
>>>>>> Rado: It is both ways. ie. if I start first the JDG Server I get 
>>>>>> the issue
>>>>>> on the library mode side when I start that one. If reverse the 
>>>>>> order of
>>>>>> startup I get it in the JDG Server side.
>>>>>>
>>>>>> Question:
>>>>>> ----------------------------------------------------------------------------------------------------------------------- 
>>>>>>
>>>>>> ...IMO the channel needs to be wrapped as
>>>>>> org.jboss.as.clustering.jgroups.MuxChannel before passing to 
>>>>>> infinispan.
>>>>>> ...
>>>>>> ----------------------------------------------------------------------------------------------------------------------- 
>>>>>>
>>>>>> For now that this is not being done. If I wanted to do it 
>>>>>> manually on the
>>>>>> library side where I can create the protocol programmatically we are
>>>>>> talking about something like this?
>>>>>>
>>>>>> ProtocolStackConfigurator configurator =
>>>>>> ConfiguratorFactory.getStackConfigurator("jgroups-udp.xml");
>>>>>> MuxChannel channel = new MuxChannel(configurator);
>>>>>> org.infinispan.remoting.transport.Transport transport = new
>>>>>> org.infinispan.remoting.transport.jgroups.JGroupsTransport(channel);
>>>>>>
>>>>>> ....
>>>>>> then replace the below
>>>>>> new
>>>>>> GlobalConfigurationBuilder().clusteredDefault().globalJmxStatistics().cacheManagerName("RDSCacheManager").allowDuplicateDomains(true).enable().transport().clusterName("UDM-CLUSTER").addProperty("configurationFile", 
>>>>>>
>>>>>> "jgroups-udp.xml")
>>>>>>     WITH
>>>>>> new
>>>>>> GlobalConfigurationBuilder().clusteredDefault().globalJmxStatistics().cacheManagerName("RDSCacheManager").allowDuplicateDomains(true).enable().transport(Transport).clusterName("UDM-CLUSTER") 
>>>>>>
>>>>>>
>>>>>> Btw, someone mentioned that if I follow this method I need to to 
>>>>>> know the
>>>>>> assigned mux ids, but that is not quite clear what it means with 
>>>>>> regards
>>>>>> to the JGroupsTransport configuration
>>>>>>
>>>>>> Thanks,
>>>>>>
>>>>>> Stylianos Kousouris
>>>>>> Red Hat Middleware Consultant
>>>>>>
>>>>>> ----- Original Message -----
>>>>>> From: "Radoslav Husar" <rhusar at redhat.com>
>>>>>> To: "Galder Zamarreño" <galder at redhat.com>, "Paul Ferraro"
>>>>>> <paul.ferraro at redhat.com>
>>>>>> Cc: "Richard Achmatowicz" <rachmato at redhat.com>, "infinispan -Dev 
>>>>>> List"
>>>>>> <infinispan-dev at lists.jboss.org>, "Stelios Koussouris"
>>>>>> <stkousso at redhat.com>, "Kurt T Stam" <kurt.stam at jboss.com>
>>>>>> Sent: Friday, 26 September, 2014 3:47:16 PM
>>>>>> Subject: Re: Clustering standalone Infinispan w/ WF running 
>>>>>> Infinispan
>>>>>>
>>>>>>     From what Stelios is telling me the question is a little bit 
>>>>>> other way
>>>>>> round: he is using library mode infinispan and jgroups in EAP and
>>>>>> connecting to JDG. So the question is what JDG is doing with the 
>>>>>> stack,
>>>>>> not AS/WF as its infinispan/jgroups subsystem is not used.
>>>>>>
>>>>>> Unfortunately I don't have access to the JDG repo so I don't know 
>>>>>> what
>>>>>> changes have been made there but if you are using the same jgroups
>>>>>> logic, IMO the channel needs to be wrapped as
>>>>>> org.jboss.as.clustering.jgroups.MuxChannel before passing to 
>>>>>> infinispan.
>>>>>>
>>>>>> Rado
>>>>>>
>>>>>> On 26/09/14 15:03, Galder Zamarreño wrote:
>>>>>>> Hey Paul,
>>>>>>>
>>>>>>> In the last couple of days, a couple of people have encountered the
>>>>>>> exception in [1] when trying to cluster a standalone Infinispan 
>>>>>>> app with
>>>>>>> its own JGroups configuration file with a AS/WF running 
>>>>>>> Infinispan cache.
>>>>>>>
>>>>>>>     From my POV, 3 possible causes:
>>>>>>>
>>>>>>> 1. Dependency mismatches between AS/WF and the standalone app. 
>>>>>>> Having done
>>>>>>> some quick study of Kurt’s case, apart from micro version 
>>>>>>> changes, all
>>>>>>> looks good.
>>>>>>>
>>>>>>> 2. Mismatch in the Infinispan and/or JGroups configuration file.
>>>>>>>
>>>>>>> 3. AS/WF puts something on the clustered wire that standalone 
>>>>>>> Infinispan
>>>>>>> does not expect. Are you still doing multiplexing? Could you be 
>>>>>>> adding
>>>>>>> extra info to the wire?
>>>>>>>
>>>>>>> With this email, I’m trying to get some clarification from you 
>>>>>>> if the
>>>>>>> issue could be due to 3rd option. If it’s either of the first 
>>>>>>> two, it’s a
>>>>>>> matter of digging and finding the difference, but if it’s 3rd 
>>>>>>> one, it’s
>>>>>>> more problematic.
>>>>>>>
>>>>>>> Any ideas?
>>>>>>>
>>>>>>> [1] https://gist.github.com/skoussou/92f062f2d0bd17168e01
>>>>>>> -- 
>>>>>>> Galder Zamarreño
>>>>>>> galder at redhat.com
>>>>>>> twitter.com/galderz
>>>>>>>
>>>> _______________________________________________
>>>> infinispan-dev mailing list
>>>> infinispan-dev at lists.jboss.org
>>>> https://lists.jboss.org/mailman/listinfo/infinispan-dev
>>>
>>
>

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