[infinispan-dev] Map/Reduce Tasks and classpath

[Ales Justin]

> 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… 

This already seems to work -- as we use tasks extensively in CapeDwarf,
and it seems to work OK; note: CapeDwarf runs in both ways - modular and embedded

-Ales

> 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
> 
> 
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