Hadoop JobTracker JVM metrics (HADOOP_JOBTRACKER_JVMMETRICS)

The HADOOP_JOBTRACKER_JVMMETRICS application class contains all the basic statistics received from the Java Virtual Machine metrics for the JobTracker group. These attributes are related to the memory usage, thread counts, garbage collection and error logs of the JVM. The Hadoop KM gathers these attributes by executing the following query:

<JobTracker jmx url>?qry=Hadoop:service=JobTracker,name=JvmMetrics

where,

<JobTracker jmx url> is the Java Management Extensions url, http://<<jobtracker host name>>:<<jobtracker 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)