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https://issues.apache.org/jira/browse/FLINK-33395?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17786143#comment-17786143
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Jane Chan edited comment on FLINK-33395 at 11/17/23 2:15 AM:
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master: 1d08b8bf6a67c6a1874e8003868d5735248a7e45
release-1.18: 10bc43889243e3ea2f6fb1e76eca7b65ba5eb491
release-1.17: c1b5d71b4b9adf0c3b8f1c77af01f030a5c92626
was (Author: qingyue):
Master: 1d08b8bf6a67c6a1874e8003868d5735248a7e45
> The join hint doesn't work when appears in subquery
> ---------------------------------------------------
>
> Key: FLINK-33395
> URL: https://issues.apache.org/jira/browse/FLINK-33395
> Project: Flink
> Issue Type: Bug
> Components: Table SQL / Planner
> Affects Versions: 1.16.0, 1.17.0, 1.18.0
> Reporter: xuyang
> Assignee: xuyang
> Priority: Major
> Labels: pull-request-available
>
> See the existent test
> 'NestLoopJoinHintTest#testJoinHintWithJoinHintInCorrelateAndWithAgg', the
> test plan is
> {code:java}
> HashJoin(joinType=[LeftSemiJoin], where=[=(a1, EXPR$0)], select=[a1, b1],
> build=[right], tryDistinctBuildRow=[true])
> :- Exchange(distribution=[hash[a1]])
> : +- TableSourceScan(table=[[default_catalog, default_database, T1]],
> fields=[a1, b1])
> +- Exchange(distribution=[hash[EXPR$0]])
> +- LocalHashAggregate(groupBy=[EXPR$0], select=[EXPR$0])
> +- Calc(select=[EXPR$0])
> +- HashAggregate(isMerge=[true], groupBy=[a1], select=[a1,
> Final_COUNT(count$0) AS EXPR$0])
> +- Exchange(distribution=[hash[a1]])
> +- LocalHashAggregate(groupBy=[a1], select=[a1,
> Partial_COUNT(a2) AS count$0])
> +- NestedLoopJoin(joinType=[InnerJoin], where=[=(a2, a1)],
> select=[a2, a1], build=[right])
> :- TableSourceScan(table=[[default_catalog,
> default_database, T2, project=[a2], metadata=[]]], fields=[a2],
> hints=[[[ALIAS options:[T2]]]])
> +- Exchange(distribution=[broadcast])
> +- TableSourceScan(table=[[default_catalog,
> default_database, T1, project=[a1], metadata=[]]], fields=[a1],
> hints=[[[ALIAS options:[T1]]]]) {code}
> but the NestedLoopJoin should broadcase left side.
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