org.apache.ambari.server.controller.metrics

Class MetricsPaddingMethod

java.lang.Object

org.apache.ambari.server.controller.metrics.MetricsPaddingMethod

public class MetricsPaddingMethod
extends Object

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	MetricsPaddingMethod.PADDING_STRATEGY

Field Summary

Fields

Modifier and Type	Field and Description
static String	ZERO_PADDING_PARAM

Constructor Summary

Constructors

Constructor and Description
MetricsPaddingMethod(MetricsPaddingMethod.PADDING_STRATEGY strategy)

Method Summary

Modifier and Type	Method and Description
void	applyPaddingStrategy(org.apache.hadoop.metrics2.sink.timeline.TimelineMetric metric, TemporalInfo temporalInfo) Adds zero/null values towards the end of metrics sequence as well as the beginning to support backward compatibility with Ganglia.

Methods inherited from class java.lang.Object

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

Field Detail

ZERO_PADDING_PARAM

public static final String ZERO_PADDING_PARAM

See Also:

Constant Field Values

Constructor Detail

MetricsPaddingMethod

public MetricsPaddingMethod(MetricsPaddingMethod.PADDING_STRATEGY strategy)

Method Detail

applyPaddingStrategy

public void applyPaddingStrategy(org.apache.hadoop.metrics2.sink.timeline.TimelineMetric metric,
                                 TemporalInfo temporalInfo)

Adds zero/null values towards the end of metrics sequence as well as the beginning to support backward compatibility with Ganglia. We use step if only a single datapoint is found. It is assumed that @TimelineMetric.metricsValues are sorted in ascending order and thee is no padding between the interval.

Parameters:

metric - AMS @TimelineMetric

temporalInfo - @TemporalInfo Requested interval