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Posted to mapreduce-user@hadoop.apache.org by Ann Pal <an...@yahoo.com> on 2012/01/19 19:10:21 UTC

Reduce node in 0.23

Hi,
How is the reduce node choosen in 0.23? What parameters determine choosing the reduce node. Does it depend on map node placement?

Thanks!

Re: Reduce node in 0.23

Posted by Arun C Murthy <ac...@hortonworks.com>.

Currently it's a random node.

You might be interested in https://issues.apache.org/jira/browse/MAPREDUCE-199.

Arun

On Jan 19, 2012, at 10:10 AM, Ann Pal wrote:

> Hi,
> How is the reduce node choosen in 0.23? What parameters determine choosing the reduce node. Does it depend on map node placement?
> 
> Thanks!