[infinispan-dev] New draft for distributed execution framework

[Manik Surtani]

Ok, so addLocalTask() will cause the task to run on the remote node, and addGlobalTask() causes the task to run on the local node?  :-)

On 1 Dec 2010, at 13:05, Vladimir Blagojevic wrote:

> On 10-12-01 8:07 AM, Manik Surtani wrote:
>> 
>> No, in terms of which tasks are executed 'locally' and which tasks are executed 'remotely'.
>> 
>> E.g., there are concievably 3 types of tasks:
>> 
>> 1) Tasks that are data intensive, that should be executed on a remote node, close to the actual data
>> 2) Aggregation of results of these data intensive tasks, which should happen on remote nodes as well, before transmitting any results back to the caller
>> 3) Aggregation of several results on the caller.
>> 
>> Now each of these tasks can be chained - I think there definitely is value in that.
> Their specifics are determined as they are added to "coordinated task", I am sure we can tune this to requirements we need.
> CacheManager cm = ...;
> CoordinatedTask task = cm.newCoordinatedTask("finalOutcomeCacheName");
> cm.addLocalTask(new GridFileQuery("my_gridfs"));          // Fetch
> cm.addLocalTask(new GridFileSizeCounter());               // Map
> cm.addGlobalTask(new IntegerSummarizer("my_gridfs_size"); // Reduce
> 
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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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