Package org.apache.hadoop.hbase.coprocessor

Class MetaTableMetrics

java.lang.Object

org.apache.hadoop.hbase.coprocessor.MetaTableMetrics

All Implemented Interfaces:

Coprocessor, RegionCoprocessor

@Private
public class MetaTableMetrics
extends Object
implements RegionCoprocessor

A coprocessor that collects metrics from meta table.

These metrics will be available through the regular Hadoop metrics2 sinks (ganglia, opentsdb, etc) as well as JMX output.

See Also:

• MetaTableMetrics

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
(package private) class	MetaTableMetrics.ExampleRegionObserverMeta
(package private) static enum	MetaTableMetrics.MetaTableOps

Nested classes/interfaces inherited from interface org.apache.hadoop.hbase.Coprocessor

Coprocessor.State

Field Summary

Fields

Modifier and Type	Field	Description
private boolean	active
private LossyCounting<String>	clientMetricsLossyCounting
private Set<String>	metrics
private MetaTableMetrics.ExampleRegionObserverMeta	observer
private org.apache.hbase.thirdparty.com.google.common.collect.ImmutableMap<Class<? extends Row>,MetaTableMetrics.MetaTableOps>	opsNameMap
private LossyCounting<String>	regionMetricsLossyCounting
private MetricRegistry	registry

Fields inherited from interface org.apache.hadoop.hbase.Coprocessor

PRIORITY_HIGHEST, PRIORITY_LOWEST, PRIORITY_SYSTEM, PRIORITY_USER, VERSION

Constructor Summary

Constructors

Constructor	Description
MetaTableMetrics()

Method Summary

Modifier and Type	Method	Description
Optional<RegionObserver>	getRegionObserver()
void	start(CoprocessorEnvironment env)	Called by the CoprocessorEnvironment during it's own startup to initialize the coprocessor.
void	stop(CoprocessorEnvironment env)	Called by the CoprocessorEnvironment during it's own shutdown to stop the coprocessor.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.apache.hadoop.hbase.Coprocessor

getServices

Methods inherited from interface org.apache.hadoop.hbase.coprocessor.RegionCoprocessor

getBulkLoadObserver, getEndpointObserver

Field Details

observer

private MetaTableMetrics.ExampleRegionObserverMeta observer

registry

private MetricRegistry registry

clientMetricsLossyCounting

private LossyCounting<String> clientMetricsLossyCounting

regionMetricsLossyCounting

private LossyCounting<String> regionMetricsLossyCounting

active

private boolean active

metrics

private Set<String> metrics

opsNameMap

private org.apache.hbase.thirdparty.com.google.common.collect.ImmutableMap<Class<? extends Row>,MetaTableMetrics.MetaTableOps> opsNameMap

Constructor Details

MetaTableMetrics

public MetaTableMetrics()

Method Details

getRegionObserver

public Optional<RegionObserver> getRegionObserver()

Specified by:

getRegionObserver in interface RegionCoprocessor

start

public void start(CoprocessorEnvironment env)
           throws IOException

Description copied from interface: Coprocessor

Called by the CoprocessorEnvironment during it's own startup to initialize the coprocessor.

Specified by:

start in interface Coprocessor

Throws:

IOException

stop

public void stop(CoprocessorEnvironment env)
          throws IOException

Description copied from interface: Coprocessor

Called by the CoprocessorEnvironment during it's own shutdown to stop the coprocessor.

Specified by:

stop in interface Coprocessor

Throws:

IOException