Theoretically, you should be able to do this. You'll need to alter all the ports so that there are no conflicts. However, resources might be a problem... (assuming that you want daemons of both versions running at the same time).. If you just want to run one version at a time, then it should not be a problem as long as you keep the directories separate..
On Thu, Oct 29, 2009 at 10:44 PM, Jeff Zhang <[email protected]> wrote: > Hi all, > > I have installed hadoop 0.18.3 on my own cluster with 5 machines, now I > want > to install hadoop 0.20, but I do not run to uninstall the hadoop 0.18.3. > > So what things should I modify to eliminate conflict with hadoop 0.18.3 ? I > think currently I should modify the data dir and name dir and the ports, > what else should I take care ? > > > Thank you > > Jeff zhang >
