There are some good recommendations in this blog post: http://www.cloudera.com/blog/2010/03/clouderas-support-team-shares-some-basic-hardware-recommendations/
It's a little dated, but the reasoning and basics are sound. -Joey On Thu, Jun 9, 2011 at 10:59 AM, Mark <[email protected]> wrote: > Can someone give some brief guidance on some (ballpark) specs for a hadoop > cluster? > > - What are the typical size and memory requirements are there for a > dedicated namenode? > - What are the typical size and memory requirements are there for individual > datanodes? > - Should there be more, less or even amounts of ram on each datanode? > - Should the namenode have more, less or an even amount of ram as compared > to the datanode? > > Thanks > > -- Joseph Echeverria Cloudera, Inc. 443.305.9434
