Package org.apache.gravitino.stats

Interface SupportsStatistics

@Evolving public interface SupportsStatistics
SupportsStatistics provides methods to list and update statistics. A table, a partition or a fileset can implement this interface to manage its statistics.

  • Method Details

    • listStatistics

      List<Statistic> listStatistics()
      Lists all statistics.
      Returns:
      a list of statistics

    • updateStatistics

      void updateStatistics(Map<String,StatisticValue<?>> statistics) throws UnmodifiableStatisticException, IllegalStatisticNameException
      Updates statistics with the provided values. If the statistic exists, it will be updated with the new value. If the statistic does not exist, it will be created. If the statistic is unmodifiable, it will throw an UnmodifiableStatisticException. If the statistic name is illegal, it will throw an IllegalStatisticNameException.
      Parameters:
      statistics - a map of statistic names to their values
      Throws:
      UnmodifiableStatisticException
      IllegalStatisticNameException

    • dropStatistics

      boolean dropStatistics(List<String> statistics) throws UnmodifiableStatisticException
      Drop statistics by their names. If the statistic is unmodifiable, it will throw an UnmodifiableStatisticException.
      Parameters:
      statistics - a list of statistic names to be dropped
      Returns:
      true if the statistics were successfully dropped, false if no statistics were dropped
      Throws:
      UnmodifiableStatisticException - if any of the statistics to be dropped are unmodifiable