Package org.apache.hadoop.hbase.regionserver

Interface MetricsUserAggregateSource

All Superinterfaces:

BaseSource

All Known Implementing Classes:

MetricsUserAggregateSourceImpl

@Private
public interface MetricsUserAggregateSource
extends BaseSource

This interface will be implemented by a MetricsSource that will export metrics from multiple users into the hadoop metrics system.

Field Summary

Fields

Modifier and Type	Field	Description
static final String	METRICS_CONTEXT	The name of the metrics context that metrics will be under.
static final String	METRICS_DESCRIPTION	Description
static final String	METRICS_JMX_CONTEXT	The name of the metrics context that metrics will be under in jmx
static final String	METRICS_NAME	The name of the metrics
static final String	NUM_USERS
static final String	NUMBER_OF_USERS_DESC

Fields inherited from interface org.apache.hadoop.hbase.metrics.BaseSource

HBASE_METRICS_SYSTEM_NAME

Method Summary

Modifier and Type	Method	Description
void	deregister(MetricsUserSource toRemove)
MetricsUserSource	getOrCreateMetricsUser(String user)	Returns a MetricsUserSource if already exists, or creates and registers one for this user
Map<String,MetricsUserSource>	getUserSources()

Methods inherited from interface org.apache.hadoop.hbase.metrics.BaseSource

decGauge, getMetricRegistryInfo, getMetricsContext, getMetricsDescription, getMetricsJmxContext, getMetricsName, incCounters, incGauge, init, removeMetric, setGauge, updateHistogram

Field Details

METRICS_NAME

static final String METRICS_NAME

The name of the metrics

See Also:

• Constant Field Values

METRICS_CONTEXT

static final String METRICS_CONTEXT

The name of the metrics context that metrics will be under.

See Also:

• Constant Field Values

METRICS_DESCRIPTION

static final String METRICS_DESCRIPTION

Description

See Also:

• Constant Field Values

METRICS_JMX_CONTEXT

static final String METRICS_JMX_CONTEXT

The name of the metrics context that metrics will be under in jmx

See Also:

• Constant Field Values

NUM_USERS

static final String NUM_USERS

See Also:

• Constant Field Values

NUMBER_OF_USERS_DESC

static final String NUMBER_OF_USERS_DESC

See Also:

• Constant Field Values

Method Details

getOrCreateMetricsUser

MetricsUserSource getOrCreateMetricsUser(String user)

Returns a MetricsUserSource if already exists, or creates and registers one for this user

Parameters:

user - the user name

Returns:

a metrics user source

deregister

void deregister(MetricsUserSource toRemove)

getUserSources

Map<String,MetricsUserSource> getUserSources()