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Posted to issues@spark.apache.org by "Wei Xue (Jira)" <ji...@apache.org> on 2020/02/12 22:13:00 UTC

[jira] [Updated] (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 ]

Wei Xue updated SPARK-30801:
----------------------------
    Description: 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.  (was: Currently there are unsupported queries by AQE. 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.)

> 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
>            Priority: Major
>
> 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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