Raihan,
There is no need to implement a custom mapper or reducer. If you are
experiencing issues with performance you might consider to use bucketized
tables and do a bucketed map join/ sorted merge map join. A good example of
performance in joins can be found in this slide from Facebook:
https://
Sending it again. As I haven't got any reply on this. Any personal
experience will be appreciated.
*Raihan Jamal*
On Mon, Jul 9, 2012 at 3:37 PM, Raihan Jamal wrote:
> *Problem Statement:-*
>
> I need to compare two tables Table1 and Table2 and they both store same
> thing. So I need to co
