Hi Clement You can get the full cluster status from the dfsadmin page at http://<nn-host>:50070/dfshealth.jsp . Alternatively you can try hadoop dfs admin -report to get the cluster details http://hadoop.apache.org/common/docs/current/commands_manual.html#dfsadmin
Regards Bejoy.K.S On Sun, Mar 18, 2012 at 11:30 PM, Clement Jebakumar <jeba.r...@gmail.com>wrote: > > Is there any API or command to get DataNode informaiton? like what are the > nodes up or dead... their last beet.. and so on?