Uses of Interface
org.apache.hadoop.metrics.Updater

Packages that use Updater

org.apache.hadoop.dfs	A distributed implementation of FileSystem.
org.apache.hadoop.dfs.datanode.metrics
org.apache.hadoop.ipc.metrics
org.apache.hadoop.mapred	A software framework for easily writing applications which process vast amounts of data (multi-terabyte data-sets) parallelly on large clusters (thousands of nodes) built of commodity hardware in a reliable, fault-tolerant manner.
org.apache.hadoop.metrics	This package defines an API for reporting performance metric information.
org.apache.hadoop.metrics.jvm
org.apache.hadoop.metrics.spi	The Service Provider Interface for the Metrics API.

Uses of Updater in org.apache.hadoop.dfs

Classes in org.apache.hadoop.dfs that implement Updater

class	FSNamesystemMetrics This class is for maintaining the various FSNamesystem status metrics and publishing them through the metrics interfaces.
class	NameNodeMetrics This class is for maintaining the various NameNode statistics and publishing them through the metrics interfaces.

Uses of Updater in org.apache.hadoop.dfs.datanode.metrics

Classes in org.apache.hadoop.dfs.datanode.metrics that implement Updater

class

DataNodeMetrics This class is for maintaining the various DataNode statistics and publishing them through the metrics interfaces.

Uses of Updater in org.apache.hadoop.ipc.metrics

Classes in org.apache.hadoop.ipc.metrics that implement Updater

class

RpcMetrics This class is for maintaining the various RPC statistics and publishing them through the metrics interfaces.

Uses of Updater in org.apache.hadoop.mapred

Classes in org.apache.hadoop.mapred that implement Updater

class

TaskTracker.TaskTrackerMetrics

Uses of Updater in org.apache.hadoop.metrics

Methods in org.apache.hadoop.metrics with parameters of type Updater

void	MetricsContext.registerUpdater(Updater updater) Registers a callback to be called at regular time intervals, as determined by the implementation-class specific configuration.
void	MetricsContext.unregisterUpdater(Updater updater) Removes a callback, if it exists.

Uses of Updater in org.apache.hadoop.metrics.jvm

Classes in org.apache.hadoop.metrics.jvm that implement Updater

class

JvmMetrics Singleton class which eports Java Virtual Machine metrics to the metrics API.

Uses of Updater in org.apache.hadoop.metrics.spi

Methods in org.apache.hadoop.metrics.spi with parameters of type Updater

void	AbstractMetricsContext.registerUpdater(Updater updater) Registers a callback to be called at time intervals determined by the configuration.
void	AbstractMetricsContext.unregisterUpdater(Updater updater) Removes a callback, if it exists.