Hadoop - Metrics

About

What are Application Metrics? ie Perfcounter, Performance Metrics, Operational data, Monitoring, telemetry on Hadoop

Articles Related

Component

Jvm

JvmMetrics

Rpc

RetryCache/NameNodeRetryCache: RetryCache metrics is useful to monitor NameNode fail-over. Each metrics record contains Hostname tag.
rpc
rpcdetailed

Hdfs

namenode: Namenode
FSNamesystem: hdfs global
JournalNode: Journalnode
datanode: HDFS - DataNode
FsVolume: Per-volume metrics contain Datanode Volume IO related statistics.

Yarn

ClusterMetrics: shows the metrics of the YARN cluster from the .:yarn:rm|ResourceManager]]’s perspective.
QueueMetrics: shows an application queue from the ResourceManager’s perspective.
NodeManagerMetrics: shows the statistics of the containers in the node.
ContainerMetrics: shows the resource utilization statistics of a container.

Ugi

UgiMetrics

Metrics

MetricsSystem

Default context

StartupProgress

Documentation / Reference