I am trying to configure HA hdfs using shared directory and planning to use NAS.I understand that it just need to be mounted on my name node machines.Is there ball park size that I could look at.These are non production servers that I am playing with,so there will not be a huge load and the cluster is very small.
You should not use shared directory (NFS HA). Use Quorum Journal for HDFS High Availability. It's easier to set up and offers true HA.
Thanks Darren.I understand qourum provides true HA.My cluster has 4 machines and I want to run journal node on all.The manager GUI prevents from confuguring HA in this case as it needs an odd number of journal nodes running.I know its more beneficial to go with an odd number so that we can have the system running even if some machines are down.But this is kind of a test scenario.
1.Do we have a way to configure HA for qorum with an even number for journal nodes.If there is then I would defintely like to go that route.