Class AdaptiveReorderPartitionedJoin

java.lang.Object

io.trino.sql.planner.iterative.rule.AdaptiveReorderPartitionedJoin

All Implemented Interfaces:

Rule<JoinNode>

public class AdaptiveReorderPartitionedJoin
extends Object
implements Rule<JoinNode>

Flip sides for partitioned join based on data size stats. This rule is only used during Adaptive Planning in FTE. From:

    Join (PARTITIONED)
      - left side (partitioned)
      - Partial Aggregation (optional)
          - Exchange (LOCAL)
              - right side (partitioned)
 

TO:

    Join (PARTITIONED)
      - Partial Aggregation (optional)
          - right side (partitioned)
      - Exchange (LOCAL) (if needed, derived using source stream properties)
          - left side (partitioned)
 

Nested Class Summary

Nested classes/interfaces inherited from interface io.trino.sql.planner.iterative.Rule

Rule.Context, Rule.Result

Constructor Summary

Constructors

Constructor	Description
AdaptiveReorderPartitionedJoin(Metadata metadata)

Method Summary

Modifier and Type	Method	Description
Rule.Result	apply(JoinNode joinNode, Captures captures, Rule.Context context)
Pattern<JoinNode>	getPattern()	Returns a pattern to which plan nodes this rule applies.
boolean	isEnabled(Session session)

Methods inherited from class java.lang.Object

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

Constructor Details

AdaptiveReorderPartitionedJoin

public AdaptiveReorderPartitionedJoin(Metadata metadata)

Method Details

getPattern

public Pattern<JoinNode> getPattern()

Description copied from interface: Rule

Returns a pattern to which plan nodes this rule applies.

Specified by:

getPattern in interface Rule<JoinNode>

isEnabled

public boolean isEnabled(Session session)

Specified by:

isEnabled in interface Rule<JoinNode>

apply

public Rule.Result apply(JoinNode joinNode,
 Captures captures,
 Rule.Context context)

Specified by:

apply in interface Rule<JoinNode>