Package 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

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

    • Method Detail

      • getFilterMetricName

        java.lang.String getFilterMetricName()
        Returns:
        the metric name to use for filter metrics

      • updateValues

        java.util.Map<java.lang.String,​java.lang.Long> updateValues​(java.util.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​(java.lang.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