mappers are not created per row but instead they are based on your query and hive configuration if u set max input size etc you can actually set max number of mappers you want to set as well to limit how many maps are launched
On Fri, Jun 29, 2012 at 12:17 AM, Mohammad Tariq <donta...@gmail.com> wrote: > Hello list, > > Since Hive tables are assumed to be of text input format, is > it right to assume that a mapper is created per row of a particular > table??Please correct me if my understanding is wrong. Also let me > know how mappers are created corresponding to a Hive query. Many > thanks. > > Regards, > Mohammad Tariq > -- Nitin Pawar
