Brian, If you have access to the web UI, you can get those metrics in JSON from the JMXJsonServlet. Try hitting http://namenode_hostname:50070/jmx?qry=Hadoop:* and http://jobtracker_v1_hostname:50030/jmx?qry=hadoop:*
It isn't as extensive as other options, but if you just need a snapshot of node capacity and utilization, it's pretty handy. I used it to plug some basic warnings into Nagios. Regards, Marcos On 06-06-2013 09:51, Brian Mason wrote: I am looking for a way to access a list of Nodes, Compute, Data etc .. My application is not running on the name node. It is remote. The 2.0 Yarn API look like they may be useful, but I am not on 2.0 and cannot move to 2,0 anytime soon. DFSClient.java looks useful, but its not in the API docs so I am not sure how to use it or even if I should. Any pointers would be helpful. Thanks,
