org.apache.hadoop.hbase.metrics

类 BaseSourceImpl

java.lang.Object

org.apache.hadoop.hbase.metrics.BaseSourceImpl

所有已实现的接口:

BaseSource, MetricsSource

直接已知子类:

ExceptionTrackingSourceImpl, MetricsAssignmentManagerSourceImpl, MetricsBalancerSourceImpl, MetricsHeapMemoryManagerSourceImpl, MetricsIOSourceImpl, MetricsMasterFilesystemSourceImpl, MetricsMasterProcSourceImpl, MetricsMasterQuotaSourceImpl, MetricsMasterSourceImpl, MetricsRegionAggregateSourceImpl, MetricsRegionServerSourceImpl, MetricsReplicationSourceImpl, MetricsRESTSourceImpl, MetricsSnapshotSourceImpl, MetricsTableAggregateSourceImpl, MetricsTableLatenciesImpl, MetricsWALSourceImpl, MetricsZooKeeperSourceImpl

@InterfaceAudience.Private
public class BaseSourceImpl
extends Object
implements BaseSource, MetricsSource

Hadoop 2 implementation of BaseSource (using metrics2 framework). It handles registration to DefaultMetricsSystem and creation of the metrics registry. All MetricsSource's in hbase-hadoop2-compat should derive from this class.

字段概要

字段

限定符和类型	字段和说明
protected HBaseMetrics2HadoopMetricsAdapter	metricsAdapter The adapter from hbase-metrics module to metrics2.
protected String	metricsContext
protected String	metricsDescription
protected String	metricsJmxContext
protected String	metricsName
protected DynamicMetricsRegistry	metricsRegistry 已过时。 Use hbase-metrics/hbase-metrics-api module interfaces for new metrics. Defining BaseSources for new metric groups (WAL, RPC, etc) is not needed anymore, however, for existing BaseSource implementations, please use the field named "registry" which is a MetricRegistry instance together with the HBaseMetrics2HadoopMetricsAdapter.
protected MetricRegistry	registry Note that there are at least 4 MetricRegistry definitions in the source code.

从接口继承的字段 org.apache.hadoop.hbase.metrics.BaseSource

HBASE_METRICS_SYSTEM_NAME

构造器概要

构造器

构造器和说明
BaseSourceImpl(String metricsName, String metricsDescription, String metricsContext, String metricsJmxContext)

方法概要

限定符和类型	方法和说明
void	decGauge(String gaugeName, long delta) Decrease the value of a named gauge.
void	getMetrics(MetricsCollector metricsCollector, boolean all)
String	getMetricsContext()
String	getMetricsDescription()
String	getMetricsJmxContext()
String	getMetricsName()
DynamicMetricsRegistry	getMetricsRegistry()
void	incCounters(String key, long delta) Increment a named counter by some value.
void	incGauge(String gaugeName, long delta) Add some amount to a gauge.
void	init()
void	removeMetric(String key) Remove a named gauge.
void	setGauge(String gaugeName, long value) Set a single gauge to a value.
void	updateHistogram(String name, long value)

从类继承的方法 java.lang.Object

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

从接口继承的方法 org.apache.hadoop.hbase.metrics.BaseSource

getMetricRegistryInfo

字段详细资料

metricsRegistry

@Deprecated
protected final DynamicMetricsRegistry metricsRegistry

已过时。 Use hbase-metrics/hbase-metrics-api module interfaces for new metrics. Defining BaseSources for new metric groups (WAL, RPC, etc) is not needed anymore, however, for existing BaseSource implementations, please use the field named "registry" which is a MetricRegistry instance together with the HBaseMetrics2HadoopMetricsAdapter.

metricsName

protected final String metricsName

metricsDescription

protected final String metricsDescription

metricsContext

protected final String metricsContext

metricsJmxContext

protected final String metricsJmxContext

registry

protected final MetricRegistry registry

Note that there are at least 4 MetricRegistry definitions in the source code. The first one is Hadoop Metrics2 MetricRegistry, second one is DynamicMetricsRegistry which is HBase's fork of the Hadoop metrics2 class. The third one is the dropwizard metrics implementation of MetricRegistry, and finally a new API abstraction in HBase that is the o.a.h.h.metrics.MetricRegistry class. This last one is the new way to use metrics within the HBase code. However, the others are in play because of existing metrics2 based code still needs to coexists until we get rid of all of our BaseSource and convert them to the new framework. Until that happens, new metrics can use the new API, but will be collected through the HBaseMetrics2HadoopMetricsAdapter class. BaseSourceImpl has two MetricRegistries. metricRegistry is for hadoop Metrics2 based metrics, while the registry is for hbase-metrics based metrics.

metricsAdapter

protected final HBaseMetrics2HadoopMetricsAdapter metricsAdapter

The adapter from hbase-metrics module to metrics2. This adepter is the connection between the Metrics in the MetricRegistry and the Hadoop Metrics2 system. Using this adapter, existing BaseSource implementations can define new metrics using the hbase-metrics/hbase-metrics-api module interfaces and still be able to make use of metrics2 sinks (including JMX). Existing BaseSources should call metricsAdapter.snapshotAllMetrics() in getMetrics() method. See MetricsRegionServerSourceImpl.

构造器详细资料

BaseSourceImpl

public BaseSourceImpl(String metricsName,
                      String metricsDescription,
                      String metricsContext,
                      String metricsJmxContext)

方法详细资料

init

public void init()

指定者:

init 在接口中 BaseSource

setGauge

public void setGauge(String gaugeName,
                     long value)

Set a single gauge to a value.

指定者:

setGauge 在接口中 BaseSource

参数:

gaugeName - gauge name

value - the new value of the gauge.

incGauge

public void incGauge(String gaugeName,
                     long delta)

Add some amount to a gauge.

指定者:

incGauge 在接口中 BaseSource

参数:

gaugeName - The name of the gauge to increment.

delta - The amount to increment the gauge by.

decGauge

public void decGauge(String gaugeName,
                     long delta)

Decrease the value of a named gauge.

指定者:

decGauge 在接口中 BaseSource

参数:

gaugeName - The name of the gauge.

delta - the ammount to subtract from a gauge value.

incCounters

public void incCounters(String key,
                        long delta)

Increment a named counter by some value.

指定者:

incCounters 在接口中 BaseSource

参数:

key - the name of the counter

delta - the ammount to increment

updateHistogram

public void updateHistogram(String name,
                            long value)

指定者:

updateHistogram 在接口中 BaseSource

removeMetric

public void removeMetric(String key)

Remove a named gauge.

指定者:

removeMetric 在接口中 BaseSource

参数:

key - the key of the gauge to remove

getMetrics

public void getMetrics(MetricsCollector metricsCollector,
                       boolean all)

指定者:

getMetrics 在接口中 MetricsSource

getMetricsRegistry

public DynamicMetricsRegistry getMetricsRegistry()

getMetricsContext

public String getMetricsContext()

指定者:

getMetricsContext 在接口中 BaseSource

getMetricsDescription

public String getMetricsDescription()

指定者:

getMetricsDescription 在接口中 BaseSource

getMetricsJmxContext

public String getMetricsJmxContext()

指定者:

getMetricsJmxContext 在接口中 BaseSource

getMetricsName

public String getMetricsName()

指定者:

getMetricsName 在接口中 BaseSource