org.apache.hadoop.metrics.util
Class MetricsTimeVaryingInt

java.lang.Object
  org.apache.hadoop.metrics.util.MetricsTimeVaryingInt

public class MetricsTimeVaryingInt
extends Object

The MetricsTimeVaryingInt class is for a metric that naturally varies over time (e.g. number of files created). The metric is is published at interval heart beat (the interval is set in the metrics config file). Note if one wants a time associated with the metric then use

See Also:

MetricsTimeVaryingRate

Constructor Summary

MetricsTimeVaryingInt(String nam)
Constructor - create a new metric

Method Summary

int	getPreviousIntervalValue() The Value at the Previous interval
void	inc() Inc metrics by one
void	inc(int incr) Inc metrics for incr vlaue
void	pushMetric(MetricsRecord mr) Push the delta metrics to the mr.

Methods inherited from class java.lang.Object

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

Constructor Detail

MetricsTimeVaryingInt

public MetricsTimeVaryingInt(String nam)

Constructor - create a new metric

Parameters:

nam - the name of the metrics to be used to publish the metric

Method Detail

inc

public void inc(int incr)

Inc metrics for incr vlaue

Parameters:

incr - - number of operations

inc

public void inc()

Inc metrics by one

pushMetric

public void pushMetric(MetricsRecord mr)

Push the delta metrics to the mr. The delta is since the last push/interval. Note this does NOT push to JMX (JMX gets the info via previousIntervalValue

Parameters:

mr -

getPreviousIntervalValue

public int getPreviousIntervalValue()

The Value at the Previous interval

Returns:

prev interval value