Hadoop DataNode info (HADOOP_DATANODE_INFO)

This application class contains attributes that display the number of active connections in the DataNode. The Hadoop KM gathers these metrics by executing the following query:

<DataNode jmx url>?qry=Hadoop:service=DataNode,name=DataNodeInfo

where,

<DataNode jmx url> is the Java Management Extensions url, http://<<datanode host name>>:<<datanode port>>/jmx

qry is Hadoop by default

service contains the type of the group, for example, DataNode, ResourceManager, JobTracker, ResourceManager, TaskTracker and other available groups

name contains the type of metrics data you want to collect and display, for example, JVMmetrics, Queuemetrics, RPCactivity and other available metrics types

Application class attributes

Attributes (parameters)