alluxio.metrics

Interface MultiValueMetricsAggregator

All Known Implementing Classes:

SingleTagValueAggregator

public interface MultiValueMetricsAggregator

An interface for the aggregator that aggregates metrics of different hosts into multiple cluster-level metrics.

Method Summary

Modifier and Type	Method and Description
String	getFilterMetricName()
long	getValue(String name) Gets the metric value of the given fully qualified metric name.
Map<String,Long>	updateValues(Set<Metric> map) Updates the aggregated values from the filtered metrics.

Method Detail

getFilterMetricName

String getFilterMetricName()

Returns:

the metric name to use for filter metrics

updateValues

Map<String,Long> updateValues(Set<Metric> map)

Updates the aggregated values from the filtered metrics. The values of map will be the filtered metrics using the metric name defined in getFilterMetricName(). The returned values are organized as a map from the metric name to metric value.

Parameters:

map - a map of metric name to the set of metrics that have the metric name

Returns:

the aggregated values

getValue

long getValue(String name)

Gets the metric value of the given fully qualified metric name.

Parameters:

name - the fully qualified metric name

Returns:

the metric value, 0 if the metric name does not exist