What do you mean when I have only 1 reducer? On Fri, Feb 13, 2009 at 4:11 PM, Rasit OZDAS <rasitoz...@gmail.com> wrote:
> Kris, > This is the case when you have only 1 reducer. > If it doesn't have any side effects for you.. > > Rasit > > > 2009/2/14 Kris Jirapinyo <kjirapi...@biz360.com>: > > Is there a way to tell Hadoop to not run Map and Reduce concurrently? > I'm > > running into a problem where I set the jvm to Xmx768 and it seems like 2 > > mappers and 2 reducers are running on each machine that only has 1.7GB of > > ram, so it complains of not being able to allocate memory...(which makes > > sense since 4x768mb > 1.7GB). So, if it would just finish the Map and > then > > start on Reduce, then there would be 2 jvm's running on one machine at > any > > given time and thus possibly avoid this out of memory error. > > > > > > -- > M. Raşit ÖZDAŞ >
