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

Class HiveVolcanoPlanner

java.lang.Object

org.apache.calcite.plan.AbstractRelOptPlanner

org.apache.calcite.plan.volcano.VolcanoPlanner

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

All Implemented Interfaces:

org.apache.calcite.plan.RelOptPlanner

public class HiveVolcanoPlanner
extends org.apache.calcite.plan.volcano.VolcanoPlanner

Refinement of VolcanoPlanner for Hive.

It uses HiveCost as its cost model.

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.calcite.plan.RelOptPlanner

org.apache.calcite.plan.RelOptPlanner.CannotPlanException, org.apache.calcite.plan.RelOptPlanner.Executor

Field Summary

Fields inherited from class org.apache.calcite.plan.volcano.VolcanoPlanner

ambitious, COST_IMPROVEMENT, impatient, root, ruleSet

Fields inherited from class org.apache.calcite.plan.AbstractRelOptPlanner

context, costFactory

Fields inherited from interface org.apache.calcite.plan.RelOptPlanner

LOGGER

Constructor Summary

Constructors

Constructor and Description
HiveVolcanoPlanner(HivePlannerContext conf) Creates a HiveVolcanoPlanner.

Method Summary

Modifier and Type	Method and Description
static org.apache.calcite.plan.RelOptPlanner	createPlanner(HivePlannerContext conf)
org.apache.calcite.plan.RelOptCost	getCost(org.apache.calcite.rel.RelNode rel, org.apache.calcite.rel.metadata.RelMetadataQuery mq) The method extends the logic of the super method to decrease the cost of the plan if it contains materialized views (heuristic).
void	registerClass(org.apache.calcite.rel.RelNode node)

Methods inherited from class org.apache.calcite.plan.volcano.VolcanoPlanner

addLattice, addListener, addMaterialization, addRelTraitDef, addRule, changeTraits, chooseDelegate, clear, clearRelTraitDefs, dump, emptyTraitSet, ensureRegistered, ensureRegistered, findBestExp, getLattice, getMaterializations, getPhaseRuleMappingInitializer, getRelMetadataTimestamp, getRelTraitDefs, getRoot, getRules, getSet, getSubset, getSubset, getSubset, isRegistered, normalizePlan, onNewClass, register, registerAbstractRelationalRules, registerMetadataProviders, registerSchema, removeRule, setImportance, setLocked, setRoot, validate

Methods inherited from class org.apache.calcite.plan.AbstractRelOptPlanner

checkCancel, fireRule, getContext, getCost, getCostFactory, getExecutor, getListener, getRuleByDescription, isRuleExcluded, mapRuleDescription, notifyChosen, notifyDiscard, notifyEquivalence, notifyTransformation, onCopy, setCancelFlag, setExecutor, setRuleDescExclusionFilter, subClasses, unmapRuleDescription

Methods inherited from class java.lang.Object

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

Constructor Detail

HiveVolcanoPlanner

public HiveVolcanoPlanner(HivePlannerContext conf)

Creates a HiveVolcanoPlanner.

Method Detail

createPlanner

public static org.apache.calcite.plan.RelOptPlanner createPlanner(HivePlannerContext conf)

registerClass

public void registerClass(org.apache.calcite.rel.RelNode node)

Specified by:

registerClass in interface org.apache.calcite.plan.RelOptPlanner

Overrides:

registerClass in class org.apache.calcite.plan.AbstractRelOptPlanner

getCost

public org.apache.calcite.plan.RelOptCost getCost(org.apache.calcite.rel.RelNode rel,
                                                  org.apache.calcite.rel.metadata.RelMetadataQuery mq)

The method extends the logic of the super method to decrease the cost of the plan if it contains materialized views (heuristic).

Specified by:

getCost in interface org.apache.calcite.plan.RelOptPlanner

Overrides:

getCost in class org.apache.calcite.plan.volcano.VolcanoPlanner