All I have to say is wow! I never tried jconsole before. I have hadoop_trunk checked out and the JMX has all kinds of great information. I am going to look at how I can get JMX/cacti/and hadoop working together.
Just as an FYI there are separate ENV variables for each now. If you override hadoop_ops you get a port conflict. It should be like this. export HADOOP_NAMENODE_OPTS="-Dcom.sun.management.jmxremote.authenticate=false -Dcom.sun.management.jmxremote.ssl=false -Dcom.sun.management.jmxremote.port=10001" Thanks Brian.
