[jira] [Closed] (FLINK-12937) Introduce join reorder planner rules in blink planner

["Kurt Young (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/FLINK-12937?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Kurt Young closed FLINK-12937.
------------------------------
       Resolution: Implemented
    Fix Version/s: 1.9.0

merged in 1.9.0: a6d72fed708e99404c96ffeca6ad70e08963e9cd

> Introduce join reorder planner rules in blink planner
> -----------------------------------------------------
>
>                 Key: FLINK-12937
>                 URL: https://issues.apache.org/jira/browse/FLINK-12937
>             Project: Flink
>          Issue Type: New Feature
>          Components: Table SQL / Planner
>            Reporter: godfrey he
>            Assignee: godfrey he
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 1.9.0
>
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> This issue aims to let blink planner support join reorder. {{LoptOptimizeJoinRule}} in Calcite could meet our requirement for now, so we could use directly this rule in blink planner. {{JoinToMultiJoinRule}} , {{ProjectMultiJoinMergeRule}} and {{FilterMultiJoinMergeRule}} should be also introduced to support {{LoptOptimizeJoinRule}}.
> additionally, we add a new rule named {{RewriteMultiJoinConditionRule}} which could apply transitive closure on `MultiJoin` for equi-join predicates to create more optimization possibilities.
> by default, join reorder is disabled, unless {{sql.optimizer.join-reorder.enabled}} is set as true.



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