Home | About | Sematext search-lucene.com search-hadoop.com
 Search Hadoop and all its subprojects:

Switch to Plain View
MapReduce >> mail # user >> Re: Why/When partitioner is used.

Sai Sai 2013-06-07, 11:17
John Lilley 2013-06-07, 14:03
Copy link to this message
Re: Why/When partitioner is used.
Why not also ask yourself, what if you do not send all keys to the
same reducer? Would you get the results you desire that way? :)

On Fri, Jun 7, 2013 at 4:47 PM, Sai Sai <[EMAIL PROTECTED]> wrote:
> I always get confused why we should partition and what is the use of it.
> Why would one want to send all the keys starting with A to Reducer1 and B to
> R2 and so on...
> Is it just to parallelize the reduce process.
> Please help.
> Thanks
> Sai

Harsh J