Currently I am trying to use JMX to collect metrics information, I can get information successfully from namenode(NameNodeActivtyMBean).
Also for jobTracker or TaskTracker(although it's common that they are same with datanode), is there any Mbeans to be used to get corresponding metrics(I know in Hadoop it has DataNodeActivityMBean.java related with datanode)? Like the storage used percentage, left free space? It would be better if there is any document or API interface which describe this(all the JMX interfaces which is used to get metrics for all kinds of nodes). Thanks! StanLee
