be8eea6bd4
"Some of the nodetool commands calls multiple time to the same methods, specifically nodetool status and ring calls the endpoint snitch get rack and datacenter many times during the same command. It result in a long execution time. This series adds the ability to cache results when needed. Typically cached result will be for a few seconds, there is no need to a clean up mechanism as we don't expect there will be too much information in the cache. Currently the only cached results are for the endpoint snitch but it is easy to add more if we see that it is needed."
Urchin JMX Interface
This is the JMX interface for urchin.
Compile
To compile do:
mvn install
Run
The maven will create an uber-jar with all dependency under the target directory. You should run it with the remote jmx enable so the nodetool will be able to connect to it.
java -Dcom.sun.management.jmxremote -Dcom.sun.management.jmxremote.port=7199 -Dcom.sun.management.jmxremote.local.only=false -Dcom.sun.management.jmxremote.authenticate=false -Dcom.sun.management.jmxremote.ssl=false -jar target/urchin-mbean-1.0.jar
Setting IP and Port
By default the the JMX would connect to a node on the localhost on port 10000.
The jmx API uses the system properties to set the IP address and Port. To change the ip address use the apiaddress property (e.g. -Dapiaddress=1.1.1.1) To change the port use the apiport (e.g. -Dapiport=10001)