http://www.theserverside.com/discussions/thread.tss?thread_id=62376
Hope this helps. From: Vikas Jadhav [mailto:vikascjadha...@gmail.com] Sent: Saturday, January 19, 2013 9:29 AM To: user@hadoop.apache.org Subject: new join algorithm using mapreduce I am writing new join algorithm using hadoop and want to do multi way join in single mapreduce job map --> processes all dataset reduce--> join of all dataset + aggregate operation second mapreduce job will collect result from multple reducer files of first job I am pretty clear about map phase but dnt have idea how to process all dataset in single reduce. So how i should proceed and do i need to modify code of mapreduce Thanks -- Thanx and Regards Vikas Jadhav