you don't need much for it, 1 or 2 small disk (preferred ssd), and not much memory, thats all. on the 11 server you can put additional HBase master, or what ever other process that is not pushed too much.
On Wed, Jun 20, 2012 at 12:08 AM, Bryan Keller <[email protected]> wrote: > I was trying to keep costs down as much as possible. Adding an 11th node > just for Zookeeper seems a bit expensive. > > On Jun 19, 2012, at 1:45 PM, Mikael Sitruk wrote: > > > you should not put ZK server on the RS or data nodes, since you don't > want > > their work to interfere ZK responsiveness. > > You can put ZK on any lightweigth server like HMaster, NN. > > I use almost same configuration as yours: 10 Region Server + DataNode+ > Task > > Tracker, 1HMaster + ZK, 1NameNone + JobTracker + ZK, 1 ZK alone. > > > > Mikael.S > > > > On Tue, Jun 19, 2012 at 11:27 PM, Bryan Keller <[email protected]> > wrote: > > > >> I have a small cluster with 10 nodes. 8 nodes are > datanodes/regionservers, > >> and 2 nodes are running HA namenodes and HMaster. The question I have > is, > >> what would be the best way to configure Zookeeper in my cluster? > Currently > >> I have it running on one of the HMaster nodes. Running an instance on > the > >> other HMaster node seems somewhat pointless as I need at least 3 nodes > for > >> failover. Should I run Zookeeper on the other HMaster node and a 3rd > >> Zookeeper on one of the regionservers? What are the performance > >> implications of running Zookeeper on a regionserver? > >> > >> > >
