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
