Package org.apache.drill.metastore.statistics
package org.apache.drill.metastore.statistics
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ClassDescriptionImplementation of
StatisticsKindwhich contain base table statistics kinds with implementedmergeStatistics()method.This class represents kinds of column statistics which may be received as a union of other statistics, for example column nulls count may be received as a sum of nulls counts of underlying metadata parts.This class represents kinds of table statistics which may be received as a union of other statistics, for example row count may be received as a sum of row counts of underlying metadata parts.Represents collection of statistics values for specific column.Implementation ofCollectableColumnStatisticsKindwhich contain base column statistics kinds with implementedmergeStatistics()method.A column specific histogramClass-holder for statistics kind and its value.Class represents kind of statistics or metadata, for example it may be min value for column, or row count for table.Implementation ofCollectableColumnStatisticsKindwhich contain base table statistics kinds with implementedmergeStatistics()method.