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? >> >>
