% again, why map
execute twice? Thanks.
Hadoop job information for Stage-1: number of mappers: 1; number of
reducers: 1
2014-04-22 19:08:49,118 Stage-1 map = 0%, reduce = 0%
2014-04-22 19:11:46,722 Stage-1 map = 100%, reduce = 0%
2014-04-22 19:12:27,633 Stage-1 map = 0%, reduce = 0%
2014
I use Hadoop 2.2.0, I know hadoop will execute map first,when map is 100%, it
then execute reduce, after reduce is 100%,job will end. I execute a job,the map
is from 0% to 100% and map is from 0% to 100% again, why map execute twice?
Thanks.
Hadoop job information for Stage-1: number
