I tried using the mapper with namespace entities.  The mapper fails to run
and complains

com.google.appengine.tools.mapreduce.MapReduceServlet handleCommand:
Got exception while running command
java.lang.RuntimeException: Got an IOException while trying to make splits

Caused by: java.io.IOException: No entities in the datastore query to split.


Any ways to configure the mapper for working with all namespaces?

-Aswath

On Mon, May 16, 2011 at 10:18 PM, Stephen Johnson <[email protected]>wrote:

> I have two questions on the Java version of mapreduce since the docs seem
> pretty sparse.
> 1.) Is it possible to use mapreduce over a namespace and if so, how do you
> configure it?
> 2.) Is only inputing entity keys and not the entire values supported on the
> Java version and if so, how do I configure that as well?
> Thanks,
> Stephen
>
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