Re: Relation between Mapper and Combiner

2011-07-01 Thread Lucian Iordache
> > *From:* Lucian Iordache [mailto:lucian.george.iorda...@gmail.com] > *Sent:* Friday, July 01, 2011 2:25 PM > *To:* mapreduce-user@hadoop.apache.org > *Subject:* Relation between Mapper and Combiner > > ** ** > > Hello guys, > > Can anybody tel

RE: Relation between Mapper and Combiner

2011-07-01 Thread Devaraj K
reduce-user@hadoop.apache.org Subject: Relation between Mapper and Combiner Hello guys, Can anybody tell me which is the relation between map task and combine tasks? I would like to know if there is a 1:1 relation between them, or is a *:1 (many to one). For example: If I have 2 map tasks ran

Relation between Mapper and Combiner

2011-07-01 Thread Lucian Iordache
Hello guys, Can anybody tell me which is the relation between map task and combine tasks? I would like to know if there is a 1:1 relation between them, or is a *:1 (many to one). For example: If I have *2 map tasks* ran on the same machine, will I have *1 combine task * on that machine to combine