[infinispan-dev] Comments on latest iteration of Distributed Task Execution design

[vblagoje at redhat.com]

Manik and I agreed on API we need in DistributedCallable:

Map<String, Set<K>> getRelatedKeys(); 
void mappedToNode(CacheManager cm);

I will update the document accordingly. 


On 2010-08-02, at 10:36, Manik Surtani <manik at jboss.org> wrote:

> Simple: the environment first calls getRelatedKeys(), and the impl passes back the keys it would need.  The env then maps the task to a node, based on locating the keys, serializes and pushes the callable to the assigned node.  The assigned node then calls mappedToNode() so that the impl has a ref to the cache in the local VM.  After that, call() is invoked.
> 
> On 2 Aug 2010, at 15:31, vblagoje at redhat.com wrote:
> 
>> I would love to make it this simple but how does execution environment know which cache to pass in mappedToNode? Task Implementors somehow have to inform the environment about the cache they need to retrieve data....   
>> 
>> 
>>> 
>>> I still don't see why you need to pass it the cache manager.  Perhaps:
>>> 
>>> DistributedCallable {
>>> 
>>> 	Set<K> getRelatedKeys();
>>> 
>>> 	void mappedToNode(Cache<K, V> cache);
>>> 
>>> }
>>> 
>>> 
>>> --
>>> Manik Surtani
>>> manik at jboss.org
>>> Lead, Infinispan
>>> Lead, JBoss Cache
>>> http://www.infinispan.org
>>> http://www.jbosscache.org
>>> 
>>> 
>>> 
>>> 
>>> 
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>> 
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> 
> --
> Manik Surtani
> manik at jboss.org
> Lead, Infinispan
> Lead, JBoss Cache
> http://www.infinispan.org
> http://www.jbosscache.org
> 
> 
> 
> 
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