Package org.apache.hadoop.fs.statistics

Interface IOStatisticsAggregator

All Known Implementing Classes:
IOStatisticsSnapshot
@Public @Evolving public interface IOStatisticsAggregator
Interface exported by classes which support aggregation of IOStatistics. Implementations MAY aggregate all statistics exported by the IOStatistics reference passed in to aggregate(IOStatistics), or they may selectively aggregate specific values/classes of statistics.

  • Method Summary

    Modifier and Type
    Method
    Description
    boolean
    aggregate(IOStatistics statistics)
    Aggregate the supplied statistics into the current set.

  • Method Details

    • aggregate

      boolean aggregate(@Nullable IOStatistics statistics)
      Aggregate the supplied statistics into the current set.
      Parameters:
      statistics - statistics; may be null
      Returns:
      true if the statistics reference was not null and so aggregated.