[infinispan-dev] Map/Reduce Tasks and classpath

[Manik Surtani]

M/R classes do have access to the cache so they can get a hold of the app's class loader.  But the tricky part is that the M/R tasks themselves need to be loaded from that class loader first… 

On 28 Jan 2013, at 14:01, Ales Justin <ales.justin at gmail.com> wrote:

>> Ales - how could we bundle something like this as an AS module and play nice with modular class loading there?
> 
> Well, I would say we're back to that discussion with AdvancedCache::withClassloader. :-)
> Same thing with M/R -- can it tap into app's CL?
> Otherwise TCCL should do, in JEE env.
> 
> Or perhaps some init(Cache cache) on M/R classes, where it can get a hold of Cache,
> which would then expose app' CL, via AC::withClassloader?
> 
> -Ales
> 
>> On 26 Jan 2013, at 21:55, Ales Justin <ales.justin at gmail.com> wrote:
>> 
>>>> Would the thread context classloader be the right thing to use?  
>>> 
>>> It depends how Infinispan's M/R code handles setting of TCCL.
>>> Specially in remote invocations.
>>> But I would expect it to work.
>>> Not the best, but good enough. :-)
>>> 
>>>> Or, perhaps it can use ScriptEngine?
>>> 
>>> What's ScriptEngine?
>>> 
>>> -Ales
>>> 
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>> 
>> --
>> Manik Surtani
>> manik at jboss.org
>> twitter.com/maniksurtani
>> 
>> Platform Architect, JBoss Data Grid
>> http://red.ht/data-grid
>> 
>> 
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> 
> 
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--
Manik Surtani
manik at jboss.org
twitter.com/maniksurtani

Platform Architect, JBoss Data Grid
http://red.ht/data-grid