Hadoop NameNode startup progress (HADOOP_NAMENODE_STARTUPPROGRESS)

The HADOOP_NameNode_STARTUPPROGRESS application class displays the statistics of NameNode startup. Four metrics are exposed for each startup phase based on its name. The startup phases are LoadingFsImage, LoadingEdits, SavingCheckpoint, and SafeMode. The Hadoop KM gathers these attributes by executing the following query:

<NameNode jmx url>?qry=Hadoop:service=NameNode,name=StartupProgress

where,

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