Hadoop DataNode metrics system stats (HADOOP_DATANODE_METRICSSYSTEM_STATS)

The HADOOP_DATANODE_METRICSSYSTEM_STATS application class monitors the metrics snapshots and publish attributes of the DataNode. The Hadoop KM gathers these attributes by executing the following query:

<DataNode jmx url>?qry= Hadoop:service=DataNode,name=MetricsSystem,sub=Stats

where,

<DataNode jmx url>  Java Management Extensions url, http://<<DataNode 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)