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

Class HiveOnTezCostModel

java.lang.Object

org.apache.hadoop.hive.ql.optimizer.calcite.cost.HiveCostModel

org.apache.hadoop.hive.ql.optimizer.calcite.cost.HiveOnTezCostModel

public class HiveOnTezCostModel
extends HiveCostModel

Cost model for Tez execution engine.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	HiveOnTezCostModel.TezBucketJoinAlgorithm BUCKET_JOIN is a hash joins where one bucket of the non streaming tables is kept in memory at the time.
static class	HiveOnTezCostModel.TezCommonJoinAlgorithm COMMON_JOIN is Sort Merge Join.
static class	HiveOnTezCostModel.TezMapJoinAlgorithm MAP_JOIN a hash join that keeps the whole data set of non streaming tables in memory.
static class	HiveOnTezCostModel.TezSMBJoinAlgorithm SMB_JOIN is a Sort Merge Join.

Nested classes/interfaces inherited from class org.apache.hadoop.hive.ql.optimizer.calcite.cost.HiveCostModel

HiveCostModel.JoinAlgorithm

Method Summary

Modifier and Type	Method and Description
org.apache.calcite.plan.RelOptCost	getAggregateCost(HiveAggregate aggregate)
static HiveOnTezCostModel	getCostModel(HiveConf conf)
org.apache.calcite.plan.RelOptCost	getDefaultCost()
org.apache.calcite.plan.RelOptCost	getScanCost(HiveTableScan ts, org.apache.calcite.rel.metadata.RelMetadataQuery mq)

Methods inherited from class org.apache.hadoop.hive.ql.optimizer.calcite.cost.HiveCostModel

getJoinCost

Methods inherited from class java.lang.Object

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

Method Detail

getCostModel

public static HiveOnTezCostModel getCostModel(HiveConf conf)

getDefaultCost

public org.apache.calcite.plan.RelOptCost getDefaultCost()

Specified by:

getDefaultCost in class HiveCostModel

getScanCost

public org.apache.calcite.plan.RelOptCost getScanCost(HiveTableScan ts,
                                                      org.apache.calcite.rel.metadata.RelMetadataQuery mq)

Specified by:

getScanCost in class HiveCostModel

getAggregateCost

public org.apache.calcite.plan.RelOptCost getAggregateCost(HiveAggregate aggregate)

Specified by:

getAggregateCost in class HiveCostModel