But how does this help me request which host to schedule the reduce task to?
Thanks, Jane --- On Sat, 12/18/10, Hari Sreekumar <hsreeku...@clickable.com> wrote: From: Hari Sreekumar <hsreeku...@clickable.com> Subject: Re: How to Influence Reduce Task Location. To: mapreduce-user@hadoop.apache.org Date: Saturday, December 18, 2010, 10:16 AM Hi Jane, The partitioner class can be used to achieve this. (http://hadoop.apache.org/mapreduce/docs/r0.21.0/api/org/apache/hadoop/mapreduce/Partitioner.html). Thanks, Hari On Sat, Dec 18, 2010 at 11:13 PM, Jane Chen <jxchen_us_1...@yahoo.com> wrote: Hi All, Is there anyway to influence where a reduce task is run? We have a case where we'd like to choose the host to run the reduce task based on the task's input key. Any suggestion is greatly appreciated. Thanks, Jane
