Hi James. I don't have any specific information for you, but if you don't
get any other responses, you may build a small test system to see how it
performs, and I'm interested in hearing your results. In the meantime, all
relevant task queue limits are linked to below:

http://code.google.com/appengine/docs/java/taskqueue/overview.html#Quotas_and_Limits

Of interest, you can have up to 10 active queues (plus the default queue)
with a total task invocation rate of 10 tasks per second across all queues.

- Jason

On Wed, Oct 28, 2009 at 8:36 AM, James Cooper <[email protected]>wrote:

>
> Hi there,
>
> I asked a similar question a couple of days ago, but I'll try
> different wording and see if it generates any interest.
>
> Has anyone successfully simulated MapReduce using task queues?  If so,
> how much parallelism have you achieved in the GAE production
> environment?  Are there tricks to convince GAE to increase parallelism
> for your app?
>
> I know Google has MapReduce on the roadmap, but it sounds like it's
> behind full text search on the schedule, so it may be a while before
> we see anything real.  We may need to come up with an interim
> solution.  I'm looking at solving a OLAP problem in GAE, and MapReduce
> seems to be the way to do that given the Datastore architecture.
>
> thoughts?
>
> -- James
> >
>

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