You mean DataNode, _TaskTracker_ and RegionServer I assume. DN and TT should not need more than 1G each - even that is excessive. You want much of your resources free for actual work (map/reduce tasks if you are running Hadoop MR).
I'll let HBase experts comment on RS. Arun On Oct 14, 2011, at 2:45 PM, Sam Seigal wrote: > Hi All, > > I have the Datanode, JobTracker and RegionServer daemons running on a > fleet of machines. Each of these machines have 8 G of memory and are > dedicated hardware for running HBase. How do you guys decided which % > of memory to assign to each ? What should this number be dependent on > ? > > Thank you, > > Sam
