Hi Ravi, I think Its not explicit in the documentation.
I've 26 nodes and 1,9 Tb of disc and I'll try to run it on same machine to test. Thanks for reply Edson Ramiro On 29 March 2010 17:38, Ravi Phulari <rphul...@yahoo-inc.com> wrote: > If your cluster is not big enough (thousands of nodes) then there should be > no problem in running NN & JT on same machine. > I usually run my smaller clusters of size 10-20 nodes with NN & JT on same > machine. > > Usually bigger clusters have millions of HDFS files and it takes lots of NN > memory that's why it is suggested to use different machines for NN & JT. > > Thanks, > Ravi > > On 3/29/10 1:01 PM, "Edson Ramiro" <erlfi...@gmail.com> wrote: > > Hi all, > > Is there any problem in configure NameNode and JobTracker in the same > machine? > > The documentation[1] Says that: > > "Typically one machine in the cluster is designated as the NameNode and > another > machine the as JobTracker..." > > But it doesn't say that we need to have one machine to each service. > > Thanks in Advance. > > [1] http://hadoop.apache.org/common/docs/current/cluster_setup.html > > Edson Ramiro > > >
