Anyone? Thanks.. On Fri, Jun 1, 2012 at 5:25 PM, shan s <mysub...@gmail.com> wrote:
> I am using Multi-GroupBy-Insert. I was expecting a single map-reduce job > which would club the group-bys together. > However it is scheduling n jobs where n = number of group bys.. > Could you please explain this behaviour. > > From X > INSERT OVERWRITE LOCAL DIRECTORY 'output/y1' > SELECT a, b , c, count(*) > group by a,b,c > INSERT OVERWRITE LOCAL DIRECTORY 'output/y2' > SELECT a , count(*) > group by a > INSERT OVERWRITE LOCAL DIRECTORY 'output/y3' > SELECT b, count(*) > group by b > ….. > ….. > …… >
