RevolutionAnalytics/RHadoop — Issue #32: map only jobs
Author: piccolbo
Created: 2011-12-09 21:54:20+00:00
State: open
Labels: complexity-medium, importance-medium, pkg-rmr, type-improvement

I thought omitting the reducer was enough. Not so. One has to specify -D mapred.reduce.tasks=0, which is possible in dev through the tuning parameters options but not recommended so we should probably provide a different mechanism. But it is not totally clear to me what happens when the reducer is not specified and the above option not set.