org.apache.hadoop.metrics.spi

类 CompositeContext

java.lang.Object

org.apache.hadoop.metrics.spi.AbstractMetricsContext

org.apache.hadoop.metrics.spi.CompositeContext

所有已实现的接口:

MetricsContext

已过时。

in favor of org.apache.hadoop.metrics2 usage.

@Deprecated
@InterfaceAudience.Public
@InterfaceStability.Evolving
public class CompositeContext
extends AbstractMetricsContext

嵌套类概要

从类继承的嵌套类/接口 org.apache.hadoop.metrics.spi.AbstractMetricsContext

AbstractMetricsContext.MetricMap, AbstractMetricsContext.TagMap

字段概要

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

DEFAULT_PERIOD

构造器概要

构造器

构造器和说明
CompositeContext() 已过时。

方法概要

方法

限定符和类型	方法和说明
void	close() 已过时。 Stops monitoring and frees buffered data, returning this object to its initial state.
protected void	emitRecord(String contextName, String recordName, OutputRecord outRec) 已过时。 Sends a record to the metrics system.
protected void	flush() 已过时。 Called each period after all records have been emitted, this method does nothing.
void	init(String contextName, ContextFactory factory) 已过时。 Initializes the context.
boolean	isMonitoring() 已过时。 Return true if all subcontexts are monitoring.
MetricsRecord	newRecord(String recordName) 已过时。 Subclasses should override this if they subclass MetricsRecordImpl.
void	registerUpdater(Updater updater) 已过时。 Registers a callback to be called at time intervals determined by the configuration.
void	startMonitoring() 已过时。 Starts or restarts monitoring, the emitting of metrics records.
void	stopMonitoring() 已过时。 Stops monitoring.
void	unregisterUpdater(Updater updater) 已过时。 Removes a callback, if it exists.

从类继承的方法 org.apache.hadoop.metrics.spi.AbstractMetricsContext

createRecord, getAllRecords, getAttribute, getAttributeTable, getContextFactory, getContextName, getPeriod, parseAndSetPeriod, remove, setPeriod, update

从类继承的方法 java.lang.Object

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

构造器详细资料

CompositeContext

@InterfaceAudience.Private
public CompositeContext()

已过时。

方法详细资料

init

@InterfaceAudience.Private
public void init(String contextName,
                                  ContextFactory factory)

已过时。

从类复制的说明: AbstractMetricsContext

Initializes the context.

指定者:

init 在接口中 MetricsContext

覆盖:

init 在类中 AbstractMetricsContext

参数:

contextName - The given name for this context

factory - The creator of this context

newRecord

@InterfaceAudience.Private
public MetricsRecord newRecord(String recordName)

已过时。

从类复制的说明: AbstractMetricsContext

Subclasses should override this if they subclass MetricsRecordImpl.

覆盖:

newRecord 在类中 AbstractMetricsContext

参数:

recordName - the name of the record

返回:

newly created instance of MetricsRecordImpl or subclass

emitRecord

@InterfaceAudience.Private
protected void emitRecord(String contextName,
                                        String recordName,
                                        OutputRecord outRec)
                   throws IOException

已过时。

从类复制的说明: AbstractMetricsContext

Sends a record to the metrics system.

指定者:

emitRecord 在类中 AbstractMetricsContext

抛出:

IOException

flush

@InterfaceAudience.Private
protected void flush()
              throws IOException

已过时。

从类复制的说明: AbstractMetricsContext

Called each period after all records have been emitted, this method does nothing. Subclasses may override it in order to perform some kind of flush.

覆盖:

flush 在类中 AbstractMetricsContext

抛出:

IOException

startMonitoring

@InterfaceAudience.Private
public void startMonitoring()
                     throws IOException

已过时。

从类复制的说明: AbstractMetricsContext

Starts or restarts monitoring, the emitting of metrics records.

指定者:

startMonitoring 在接口中 MetricsContext

覆盖:

startMonitoring 在类中 AbstractMetricsContext

抛出:

IOException

stopMonitoring

@InterfaceAudience.Private
public void stopMonitoring()

已过时。

从类复制的说明: AbstractMetricsContext

Stops monitoring. This does not free buffered data.

指定者:

stopMonitoring 在接口中 MetricsContext

覆盖:

stopMonitoring 在类中 AbstractMetricsContext

另请参阅:

AbstractMetricsContext.close()

isMonitoring

@InterfaceAudience.Private
public boolean isMonitoring()

已过时。

Return true if all subcontexts are monitoring.

指定者:

isMonitoring 在接口中 MetricsContext

覆盖:

isMonitoring 在类中 AbstractMetricsContext

close

@InterfaceAudience.Private
public void close()

已过时。

从类复制的说明: AbstractMetricsContext

Stops monitoring and frees buffered data, returning this object to its initial state.

指定者:

close 在接口中 MetricsContext

覆盖:

close 在类中 AbstractMetricsContext

registerUpdater

@InterfaceAudience.Private
public void registerUpdater(Updater updater)

已过时。

从类复制的说明: AbstractMetricsContext

Registers a callback to be called at time intervals determined by the configuration.

指定者:

registerUpdater 在接口中 MetricsContext

覆盖:

registerUpdater 在类中 AbstractMetricsContext

参数:

updater - object to be run periodically; it should update some metrics records

unregisterUpdater

@InterfaceAudience.Private
public void unregisterUpdater(Updater updater)

已过时。

从类复制的说明: AbstractMetricsContext

Removes a callback, if it exists.

指定者:

unregisterUpdater 在接口中 MetricsContext

覆盖:

unregisterUpdater 在类中 AbstractMetricsContext

参数:

updater - object to be removed from the callback list