org.apache.hadoop.hive.ql.optimizer.calcite.rules.views

Class HivePushdownSnapshotFilterRule

java.lang.Object

org.apache.calcite.plan.RelOptRule

org.apache.calcite.plan.RelRule<HivePushdownSnapshotFilterRule.Config>

org.apache.hadoop.hive.ql.optimizer.calcite.rules.views.HivePushdownSnapshotFilterRule

public class HivePushdownSnapshotFilterRule
extends org.apache.calcite.plan.RelRule<HivePushdownSnapshotFilterRule.Config>

Calcite rule to push down predicates contains VirtualColumn.SNAPSHOT_ID reference to TableScan.

This rule traverse the logical expression in HiveFilter operators and search for predicates like

snapshotId <= 12345677899

The literal is set in the RelOptHiveTable.getHiveTableMD() object wrapped by HiveTableScan and the original predicate in the HiveFilter is replaced with literal true.

See Also:

HiveAugmentSnapshotMaterializationRule

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	HivePushdownSnapshotFilterRule.Config

Nested classes/interfaces inherited from class org.apache.calcite.plan.RelRule

org.apache.calcite.plan.RelRule.Done, org.apache.calcite.plan.RelRule.MatchHandler<R extends org.apache.calcite.plan.RelOptRule>, org.apache.calcite.plan.RelRule.OperandBuilder, org.apache.calcite.plan.RelRule.OperandDetailBuilder<R extends org.apache.calcite.rel.RelNode>, org.apache.calcite.plan.RelRule.OperandTransform

Nested classes/interfaces inherited from class org.apache.calcite.plan.RelOptRule

org.apache.calcite.plan.RelOptRule.ConverterRelOptRuleOperand

Field Summary

Fields

Modifier and Type	Field and Description
static org.apache.calcite.plan.RelOptRule	INSTANCE

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

config

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

description, operands, relBuilderFactory

Method Summary

Modifier and Type	Method and Description
void	onMatch(org.apache.calcite.plan.RelOptRuleCall call)

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

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

Methods inherited from class java.lang.Object

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

Field Detail

INSTANCE

public static final org.apache.calcite.plan.RelOptRule INSTANCE

Method Detail

onMatch

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

Specified by:

onMatch in class org.apache.calcite.plan.RelOptRule