Hello, On Tue, Mar 1, 2011 at 5:49 PM, Sungho Jeon <sdev...@gmail.com> wrote: > Hi, I'm graduate student and my major is computer science, data mining. > Is that possible that install multiple hadoop in one node?
It is possible, but what would you gain from this? One DN can handle several disks parallely just fine I think. > I mean, I want to install several hadoop that have different conf. > Specifically, one hadoop has 5 datanode and other hadoop has 10 datanode. This is possible with a bunch of datanode configuration tweaks (Data directories, ipc and http ports, logging directories, etc.). > Of course I can control number of datanode by change conf and restart. > But, without changing conf, install multiple hadoop in one node is possible? Not possible without certain set of configuration changes per instance. You may make use of a set of directories and using `hadoop-daemon.sh --config <conf_dir_for_this_instance> start datanode` to start each of the DN though. -- Harsh J www.harshj.com
