[MAPREDUCE-2700] dynamic configuration of mapred.map/reduce.tasks

• Type: New Feature
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Component/s: job submission
• Labels: newbie
• Assignee: Unassigned
• Reporter: Johannes Zillmann
• Created: 17/Oct/06 15:39
• Updated: 16/Jan/12 10:08

Description

Since the optimal value for these 2 configuration properties heavily depends on the numer of nodes, also examined here
http://wiki.apache.org/lucene-hadoop/HowManyMapsAndReduces
would it be not more comfortable to configure relations to numberOfNodes ?
So you hav'nt to change it all the time the number of nodes changes...