org.apache.hadoop.hive.ql.optimizer.calcite.stats

Class HiveRelMdSelectivity

java.lang.Object

org.apache.calcite.rel.metadata.RelMdSelectivity

org.apache.hadoop.hive.ql.optimizer.calcite.stats.HiveRelMdSelectivity

public class HiveRelMdSelectivity
extends org.apache.calcite.rel.metadata.RelMdSelectivity

Field Summary

Fields

Modifier and Type	Field and Description
static org.apache.calcite.rel.metadata.RelMetadataProvider	SOURCE

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	HiveRelMdSelectivity()

Method Summary

Methods

Modifier and Type	Method and Description
protected double	exponentialBackoff(List<HiveCalciteUtil.JoinLeafPredicateInfo> peLst, com.google.common.collect.ImmutableMap<Integer,Double> colStatMap)
Double	getSelectivity(HiveJoin j, org.apache.calcite.rex.RexNode predicate)
Double	getSelectivity(HiveTableScan t, org.apache.calcite.rex.RexNode predicate)
protected double	logSmoothing(List<HiveCalciteUtil.JoinLeafPredicateInfo> peLst, com.google.common.collect.ImmutableMap<Integer,Double> colStatMap)

Methods inherited from class org.apache.calcite.rel.metadata.RelMdSelectivity

getSelectivity, getSelectivity, getSelectivity, getSelectivity, getSelectivity, getSelectivity, getSelectivity

Methods inherited from class java.lang.Object

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

Field Detail

SOURCE

public static final org.apache.calcite.rel.metadata.RelMetadataProvider SOURCE

Constructor Detail

HiveRelMdSelectivity

protected HiveRelMdSelectivity()

Method Detail

getSelectivity

public Double getSelectivity(HiveTableScan t,
                    org.apache.calcite.rex.RexNode predicate)

getSelectivity

public Double getSelectivity(HiveJoin j,
                    org.apache.calcite.rex.RexNode predicate)

logSmoothing

protected double logSmoothing(List<HiveCalciteUtil.JoinLeafPredicateInfo> peLst,
                  com.google.common.collect.ImmutableMap<Integer,Double> colStatMap)

exponentialBackoff

protected double exponentialBackoff(List<HiveCalciteUtil.JoinLeafPredicateInfo> peLst,
                        com.google.common.collect.ImmutableMap<Integer,Double> colStatMap)