org.apache.flink.runtime.metrics

类 TimerGauge

java.lang.Object

org.apache.flink.runtime.metrics.TimerGauge

所有已实现的接口:

org.apache.flink.metrics.Gauge<Long>, org.apache.flink.metrics.Metric, org.apache.flink.metrics.View

public class TimerGauge
extends Object
implements org.apache.flink.metrics.Gauge<Long>, org.apache.flink.metrics.View

TimerGauge measures how much time is spent in a given state, with entry into that state being signaled by markStart(). Measuring is stopped by markEnd(). This class in particularly takes care of the case, when update() is called when some measurement started but has not yet finished. For example even if next markEnd() call is expected to happen in a couple of hours, the returned value will account for this ongoing measurement.

字段概要

从接口继承的字段 org.apache.flink.metrics.View

UPDATE_INTERVAL_SECONDS

构造器概要

构造器

构造器和说明
TimerGauge()
TimerGauge(org.apache.flink.util.clock.Clock clock)

方法概要

限定符和类型	方法和说明
long	getAccumulatedCount()
long	getCount()
long	getMaxSingleMeasurement()
Long	getValue()
boolean	isMeasuring()
void	markEnd()
void	markStart()
void	update()

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.flink.metrics.Gauge

getMetricType

构造器详细资料

TimerGauge

public TimerGauge()

TimerGauge

public TimerGauge(org.apache.flink.util.clock.Clock clock)

方法详细资料

markStart

public void markStart()

markEnd

public void markEnd()

update

public void update()

指定者:

update 在接口中 org.apache.flink.metrics.View

getValue

public Long getValue()

指定者:

getValue 在接口中 org.apache.flink.metrics.Gauge<Long>

getMaxSingleMeasurement

public long getMaxSingleMeasurement()

返回:

the longest marked period as measured by the given * TimerGauge. For example the longest consecutive back pressured period.

getAccumulatedCount

public long getAccumulatedCount()

返回:

the accumulated period by the given * TimerGauge.

getCount

@VisibleForTesting
public long getCount()

isMeasuring

@VisibleForTesting
public boolean isMeasuring()