org.apache.flink.table.planner.plan.rules.physical.batch

类 PushLocalHashAggIntoScanRule

java.lang.Object

org.apache.calcite.plan.RelOptRule

org.apache.flink.table.planner.plan.rules.physical.batch.PushLocalAggIntoScanRuleBase

org.apache.flink.table.planner.plan.rules.physical.batch.PushLocalHashAggIntoScanRule

public class PushLocalHashAggIntoScanRule
extends PushLocalAggIntoScanRuleBase

Planner rule that tries to push a local hash aggregate which without sort into a BatchPhysicalTableSourceScan whose table is a TableSourceTable with a source supporting SupportsAggregatePushDown. The OptimizerConfigOptions.TABLE_OPTIMIZER_SOURCE_AGGREGATE_PUSHDOWN_ENABLED need to be true.

Suppose we have the original physical plan:

 BatchPhysicalHashAggregate (global)
 +- BatchPhysicalExchange (hash by group keys if group keys is not empty, else singleton)
    +- BatchPhysicalLocalHashAggregate (local)
       +- BatchPhysicalTableSourceScan
 

This physical plan will be rewritten to:

 BatchPhysicalHashAggregate (global)
 +- BatchPhysicalExchange (hash by group keys if group keys is not empty, else singleton)
    +- BatchPhysicalTableSourceScan (with local aggregate pushed down)
 

嵌套类概要

从类继承的嵌套类/接口 org.apache.calcite.plan.RelOptRule

org.apache.calcite.plan.RelOptRule.ConverterRelOptRuleOperand

字段概要

字段

限定符和类型	字段和说明
static PushLocalHashAggIntoScanRule	INSTANCE

从类继承的字段 org.apache.calcite.plan.RelOptRule

description, operands, relBuilderFactory

构造器概要

构造器

构造器和说明
PushLocalHashAggIntoScanRule()

方法概要

限定符和类型	方法和说明
boolean	matches(org.apache.calcite.plan.RelOptRuleCall call)
void	onMatch(org.apache.calcite.plan.RelOptRuleCall call)

从类继承的方法 org.apache.flink.table.planner.plan.rules.physical.batch.PushLocalAggIntoScanRuleBase

canPushDown, getRefFiledIndex, isInputRefOnly, isProjectionNotPushedDown, pushLocalAggregateIntoScan, pushLocalAggregateIntoScan, translateAggCallArgIndex, translateGroupingArgIndex

从类继承的方法 org.apache.calcite.plan.RelOptRule

any, convert, convert, convertList, convertOperand, convertOperand, equals, equals, getOperand, getOperands, getOutConvention, getOutTrait, hashCode, none, operand, operand, operand, operand, operand, operandJ, operandJ, some, toString, unordered

从类继承的方法 java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

字段详细资料

INSTANCE

public static final PushLocalHashAggIntoScanRule INSTANCE

构造器详细资料

PushLocalHashAggIntoScanRule

public PushLocalHashAggIntoScanRule()

方法详细资料

matches

public boolean matches(org.apache.calcite.plan.RelOptRuleCall call)

覆盖:

matches 在类中 org.apache.calcite.plan.RelOptRule

onMatch

public void onMatch(org.apache.calcite.plan.RelOptRuleCall call)

指定者:

onMatch 在类中 org.apache.calcite.plan.RelOptRule