hive-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Nitin Pawar <nitinpawar...@gmail.com>
Subject Re: Hive mapper creation
Date Thu, 28 Jun 2012 18:51:22 GMT
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 <dontariq@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

Mime
View raw message