[infinispan-dev] Distributed execution framework

[Galder Zamarreño]

Thanks Vladimir for the detailed article.

I have some doubts wrt failover: Let's say node N owned keys=a,b,c and a task T was sent to N to work on a,b. Assuming N' was next in hash wheel to N, if N fails, task T would be sent N' since this would be the new owner for a,b, wouldn't it? Note that Infinispan uses fixed positions in hash wheel. I don't think there's a need here to spawn T to all a,b backup nodes. Interaction between Infinispan F/J and rehashing will be important here.

Another thing to consider is what to do if the T fails but not because node N failed, but cos the task itself failed. You can either send the task to a,b backup owners which would N' or consider T as failed directly. 

Infinispan F/J will have to differentiate between these two scenarios.

On Jul 21, 2010, at 7:42 PM, Vladimir Blagojevic wrote:

> Hi,
> 
> I wanted to gather feedback from community regarding proposed scope and objectives of Distributed execution framework targeted for Infinispan 5.0. The document is a gentle introduction to the subject of distributed execution and as such is accessible to wider audience. Eager to hear your thoughts.  
> 
> Regards,
> Vladimir
> 
> https://community.jboss.org/wiki/InfinispanDistributedExecutionFramework
> 
> 
> --
> Vladimir Blagojevic
> JBoss Clustering Team
> JBoss, by Red Hat
> 
> 
> 
> 
> 
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--
Galder Zamarreño
Sr. Software Engineer
Infinispan, JBoss Cache