Hi,
Suppose I have two mappers, each mapper is assigned 10 lines of
data. I want to set a counter for each mapper, counting and
accumulating, then output the counter value to the reducer when
the mapper finishes processing all the assigned lines. So I
want the mapper outputs values only when
Take a look at cleanup() method on Mapper.
Thanks,
Prashant
Sent from my iPhone
On Dec 12, 2011, at 8:46 PM, Shi Yu wrote:
> Hi,
>
> Suppose I have two mappers, each mapper is assigned 10 lines of
> data. I want to set a counter for each mapper, counting and
> accumulating, then output the cou
