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
List<MetricsFilter>	getFilters()
long	getValue(String name) Gets the metric value of the given fully qualified metric name.
Map<String,Long>	updateValues(Map<MetricsFilter,Set<Metric>> map) Updates the aggregated values from the filtered metrics.

Method Detail

getFilters

List<MetricsFilter> getFilters()

Returns:

the filters for matching the instance metrics

updateValues

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

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

Parameters:

map - a map of MetricsFilter to the set of metrics that it filter to

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