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Posted to issues@spark.apache.org by "Wenchen Fan (Jira)" <ji...@apache.org> on 2020/02/14 03:27:00 UTC
[jira] [Resolved] (SPARK-30801) Subqueries should not be AQE-ed if
main query is not
[ https://issues.apache.org/jira/browse/SPARK-30801?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Wenchen Fan resolved SPARK-30801.
---------------------------------
Fix Version/s: 3.0.0
Resolution: Fixed
Issue resolved by pull request 27554
[https://github.com/apache/spark/pull/27554]
> Subqueries should not be AQE-ed if main query is not
> ----------------------------------------------------
>
> Key: SPARK-30801
> URL: https://issues.apache.org/jira/browse/SPARK-30801
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 3.0.0
> Reporter: Wei Xue
> Assignee: Wei Xue
> Priority: Major
> Fix For: 3.0.0
>
>
> Currently there are unsupported queries by AQE, e.g., queries that contain DPP filters. But if the main query is unsupported while the sub-query is, the subquery itself will be AQE-ed, which can lead to performance regressions due to missed opportunity of sub-query reuse.
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