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

Class HiveWindowingFixRule

java.lang.Object

org.apache.calcite.plan.RelOptRule

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

public class HiveWindowingFixRule
extends org.apache.calcite.plan.RelOptRule

Rule to fix windowing issue when it is done over aggregation columns (more info in HIVE-10627). This rule is applied as a post-processing step after optimization by Calcite in order to add columns that may be pruned by RelFieldTrimmer, but are still needed due to the concrete implementation of Windowing processing in Hive.

Field Summary

Fields

Modifier and Type	Field and Description
static HiveWindowingFixRule	INSTANCE

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

description, operands

Method Summary

Methods

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, equals, equals, getOperand, getOperands, getOutConvention, getOutTrait, hashCode, matches, none, operand, operand, operand, operand, operand, some, toString, unordered

Methods inherited from class java.lang.Object

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

Field Detail

INSTANCE

public static final HiveWindowingFixRule INSTANCE

Method Detail

onMatch

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

Specified by:

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