org.apache.hadoop.hive.metastore.columnstats.aggr

Class ColumnStatsAggregator

java.lang.Object

org.apache.hadoop.hive.metastore.columnstats.aggr.ColumnStatsAggregator

Direct Known Subclasses:

BinaryColumnStatsAggregator, BooleanColumnStatsAggregator, DateColumnStatsAggregator, DecimalColumnStatsAggregator, DoubleColumnStatsAggregator, LongColumnStatsAggregator, StringColumnStatsAggregator

public abstract class ColumnStatsAggregator
extends Object

Field Summary

Fields

Modifier and Type	Field and Description
double	ndvTuner
boolean	useDensityFunctionForNDVEstimation

Constructor Summary

Constructors

Constructor and Description
ColumnStatsAggregator()

Method Summary

Modifier and Type	Method and Description
abstract org.apache.hadoop.hive.metastore.api.ColumnStatisticsObj	aggregate(List<MetaStoreUtils.ColStatsObjWithSourceInfo> colStatsWithSourceInfo, List<String> partNames, boolean areAllPartsFound)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

useDensityFunctionForNDVEstimation

public boolean useDensityFunctionForNDVEstimation

ndvTuner

public double ndvTuner

Constructor Detail

ColumnStatsAggregator

public ColumnStatsAggregator()

Method Detail

aggregate

public abstract org.apache.hadoop.hive.metastore.api.ColumnStatisticsObj aggregate(List<MetaStoreUtils.ColStatsObjWithSourceInfo> colStatsWithSourceInfo,
                                                                                   List<String> partNames,
                                                                                   boolean areAllPartsFound)
                                                                            throws org.apache.hadoop.hive.metastore.api.MetaException

Throws:

org.apache.hadoop.hive.metastore.api.MetaException