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https://issues.apache.org/jira/browse/SPARK-35673?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17359663#comment-17359663
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Takeshi Yamamuro commented on SPARK-35673:
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We cannot move `RemoveAllHints` just after the `Hints` batch?
> Spark fails on unrecognized hint in subquery
> --------------------------------------------
>
> Key: SPARK-35673
> URL: https://issues.apache.org/jira/browse/SPARK-35673
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 3.0.2, 3.1.1, 3.1.2, 3.2.0
> Reporter: Willi Raschkowski
> Priority: Major
>
> Spark queries to fail on unrecognized hints in subqueries. An example to
> reproduce:
> {code:sql}
> SELECT /*+ use_hash */ 42;
> -- 21/06/08 01:28:05 WARN HintErrorLogger: Unrecognized hint: use_hash()
> -- 42
> SELECT *
> FROM (
> SELECT /*+ use_hash */ 42
> );
> -- 21/06/08 01:28:07 WARN HintErrorLogger: Unrecognized hint: use_hash()
> -- Error in query: unresolved operator 'Project [*];
> -- 'Project [*]
> -- +- SubqueryAlias __auto_generated_subquery_name
> -- +- Project [42 AS 42#2]
> -- +- OneRowRelation
> {code}
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