ok i will check them in both ways :)
On Wed, Nov 6, 2013 at 2:10 PM, Chris Mawata <[email protected]> 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 maintainable than tuning before coding. > Chris > > > > On 11/5/2013 9:59 PM, unmesha sreeveni wrote: > > i am dealing with multiple mappers and 1 reducer. so which is best? > > > On Tue, Nov 5, 2013 at 6:28 PM, Chris Mawata <[email protected]>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. >> >> 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 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 better way. >> >> -- >> *Thanks & Regards* >> >> Unmesha Sreeveni U.B >> >> *Junior Developer * >> >> *Amrita Center For Cyber Security * >> >> >> * Amritapuri. www.amrita.edu/cyber/ <http://www.amrita.edu/cyber/> * >> >> >> > > > -- > *Thanks & Regards* > > Unmesha Sreeveni U.B > > *Junior Developer * > > *Amrita Center For Cyber Security * > > > * Amritapuri. www.amrita.edu/cyber/ <http://www.amrita.edu/cyber/> * > > > -- *Thanks & Regards* Unmesha Sreeveni U.B *Junior Developer* *Amrita Center For Cyber Security* * Amritapuri.www.amrita.edu/cyber/ <http://www.amrita.edu/cyber/>*
