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From Jonathan Ellis <jbel...@gmail.com>
Subject Re: Hadoop over Cassandra
Date Tue, 18 May 2010 00:23:26 GMT
On Mon, May 17, 2010 at 4:12 PM, Vick Khera <vivek@khera.org> wrote:
> On Mon, May 17, 2010 at 3:46 PM, Jonathan Ellis <jbellis@gmail.com> wrote:
>> Moving to the user@ list.
>>
>> http://wiki.apache.org/cassandra/HadoopSupport should be useful.
>
> That document doesn't really answer the "is data locality preserved"
> when running the map phase, but my hunch is "no".

The answer is, "yes, as long as you have hadoop on all the cassandra
machines." (the case where it's easy to map cassandra locality to
hadoop locality :)

-- 
Jonathan Ellis
Project Chair, Apache Cassandra
co-founder of Riptano, the source for professional Cassandra support
http://riptano.com

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