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

Class HiveFilterSortPredicates

java.lang.Object

org.apache.calcite.rel.RelShuttleImpl

org.apache.calcite.rel.RelHomogeneousShuttle

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

All Implemented Interfaces:

org.apache.calcite.rel.RelShuttle

public class HiveFilterSortPredicates
extends org.apache.calcite.rel.RelHomogeneousShuttle

Sorts conditions in a filter predicate to accelerate query processing based on selectivity and compute cost. Currently it is not applied recursively, i.e., it is only applied to top predicates in the condition.

Field Summary

Fields inherited from class org.apache.calcite.rel.RelShuttleImpl

stack

Constructor Summary

Constructors

Constructor and Description
HiveFilterSortPredicates(AtomicInteger noColsMissingStats)

Method Summary

Modifier and Type	Method and Description
org.apache.calcite.rel.RelNode	visit(org.apache.calcite.rel.RelNode other)

Methods inherited from class org.apache.calcite.rel.RelHomogeneousShuttle

visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit

Methods inherited from class org.apache.calcite.rel.RelShuttleImpl

visit, visit, visitChild, visitChildren

Methods inherited from class java.lang.Object

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

Constructor Detail

HiveFilterSortPredicates

public HiveFilterSortPredicates(AtomicInteger noColsMissingStats)

Method Detail

visit

public org.apache.calcite.rel.RelNode visit(org.apache.calcite.rel.RelNode other)

Specified by:

visit in interface org.apache.calcite.rel.RelShuttle

Overrides:

visit in class org.apache.calcite.rel.RelShuttleImpl