5 Replies Latest reply on Jun 27, 2013 12:58 PM by iangreen

Best way to deploy classes used by the Distributed Execution Framework?

djharte Jun 12, 2013 2:13 PM

Hi Folks,

I have a basic Java Master/Worker app setup in Infinispan using DIST/Embedded mode in a cluster and have successfully leveraged the distributed execution framework, basically it distributes a set of data around the grid, does some work in parallel and brings back the results to the master.

My question is how execution classes (submitted to Infinispan) can be efficiently deployed to many nodes in a cluster (particularly in development) ? ... Do people use Jboss AS when they need to do this (allowing deployment from your IDE)? if this is the case then what sort of topology would make sense? I believe that the classes need to be on the JBoss classpath which means that deploying them as a War/Ear/Module wouldn't work, correct? I am a JBoss AS novice so I don't expect much but would really appreciate it if you could help me get pointed in the right direction.

Thanks very much,

David

1. Re: Best way to deploy classes used by the Distributed Execution Framework?

vblagojevic Jun 14, 2013 7:06 AM (in response to djharte)

David,

Yes your application classes from war/ear should be deployed to all nodes. I'd start investigation with domain deployment https://docs.jboss.org/author/display/AS7/Application+deployment

Regards,
Vladimir
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2. Re: Best way to deploy classes used by the Distributed Execution Framework?

djharte Jun 14, 2013 10:03 AM (in response to vblagojevic)

Hi Vladimir, thanks very much for the pointer.
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3. Re: Best way to deploy classes used by the Distributed Execution Framework?

iangreen Jun 26, 2013 10:06 PM (in response to vblagojevic)

so this means the only way to deploy code to run on the cluster is to take down the nodes where the new code is deployed, losing the data that's in memory (if it's not passivated, etc), right?

are there plans in the future for some kind of dynamic classloading for execution across the cluster (i.e. so arbitrary code can be run across the grid) ?

also is there a way i can connect to the grid as an 'observer' that does not want any local cache entries but merely wants to use the distributed execution service?
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4. Re: Best way to deploy classes used by the Distributed Execution Framework?

nadirx Jun 27, 2013 12:45 AM (in response to iangreen)

You could use JSR-232 (aka javax.scripting) as an alternative until we introduce some kind of dynamic class loading feature. By default it has the capability to compile Java and Javascript on the fly.
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5. Re: Best way to deploy classes used by the Distributed Execution Framework?

iangreen Jun 27, 2013 12:58 PM (in response to nadirx)

Yeah I thought of something like that. I will look into it in the meantime. Thanks
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