Try it both ways and look at the numbers. Measurement is the ultimate
way to get the answer.
My bet: The difference is so small I would worry about where if makes
your code more maintainable than tuning before coding.
Chris
On 11/5/2013 9:59 PM, unmesha sreeveni wrote:
i am dealing with
ok i will check them in both ways :)
On Wed, Nov 6, 2013 at 2:10 PM, Chris Mawata chris.maw...@gmail.com wrote:
Try it both ways and look at the numbers. Measurement is the ultimate
way to get the answer.
My bet: The difference is so small I would worry about where if makes your
code more
I am emiting 'A' value and 'B' value from reducer.
I need to do further calculations also.
which is a better way?
1. Do all remamining computations within reducer , after emiting
or
2.Do remaining computation In driver: read A and B value from part file and
do further computations.
Pls suggest a
If you have multiple reducers you are doing it in parallel while in the
driver it is surely single threaded so my bet would be on the reducers.
Chris
On 11/5/2013 6:15 AM, unmesha sreeveni wrote:
I am emiting 'A' value and 'B' value from reducer.
I need to do further calculations also.
which
i am dealing with multiple mappers and 1 reducer. so which is best?
On Tue, Nov 5, 2013 at 6:28 PM, Chris Mawata chris.maw...@gmail.com wrote:
If you have multiple reducers you are doing it in parallel while in the
driver it is surely single threaded so my bet would be on the reducers.
