Hi Guys,

I also implemented something w/ JSR 223 - https://github.com/saturnism/infinispan/tree/jsr223-mr/core/src/main/java/org/infinispan/distexec/mapreduce

With tests that uses scripts like this:
https://github.com/saturnism/infinispan/tree/jsr223-mr/core/src/test/resources/mapreduce

On Mon, Jan 28, 2013 at 6:53 AM, Ales Justin <ales.justin@gmail.com> wrote:
> 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@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@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
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>>> twitter.com/maniksurtani
>>>
>>> Platform Architect, JBoss Data Grid
>>> http://red.ht/data-grid
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> --
> Manik Surtani
> manik@jboss.org
> twitter.com/maniksurtani
>
> Platform Architect, JBoss Data Grid
> http://red.ht/data-grid
>
>
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