Correct. The master runs the namenode and jobtracker, but not a datanode or tasktracker.
Tom On Tue, Nov 24, 2009 at 4:57 PM, Mark Kerzner <[email protected]> wrote: > Hi, > > do I understand it correctly that, when I launch a Hadoop cluster on EC2, > the master will not be doing any work, and it is just for organizing work, > while the slaves will be actual workers? > > Thank you, > Mark >
