Thanks Arun,
On Mon, Nov 14, 2011 at 4:34 AM, Arun Murthy wrote:
> How much RAM do you have?
>
> A good rule of thumb is to use 1-1.5G for maps and 2G per reduce
> (vmem). Ensure your OS has at least 2G of memory.
>
> Thus, with 24G and dual quad cores you should be at 8-10m/2r. Scale up
> if you
Hi All,
We have been using dual socket quad core machines for a while and have
been running with 8 mappers 2 reducers. The rule of thumb we heard was
slightly oversubscribe the number of cores but at Hadoop World several
people said other things.
Some new machines we are moving to have 2 socket 6
