[jira] [Commented] (SPARK-37379) Add tree pattern pruning to CTESubstitution rule

["Apache Spark (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SPARK-37379?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17446232#comment-17446232 ] 

Apache Spark commented on SPARK-37379:
--------------------------------------

User 'JoshRosen' has created a pull request for this issue:
https://github.com/apache/spark/pull/34658

> Add tree pattern pruning to CTESubstitution rule
> ------------------------------------------------
>
>                 Key: SPARK-37379
>                 URL: https://issues.apache.org/jira/browse/SPARK-37379
>             Project: Spark
>          Issue Type: Sub-task
>          Components: Optimizer
>    Affects Versions: 3.1.0
>            Reporter: Josh Rosen
>            Assignee: Josh Rosen
>            Priority: Major
>
> I propose to add tree pattern pruning to the CTESubstitution rule in order to skip tree traversal when the tree does not contain an UnresolvedWith expression.
> This is motivated by profiling a job which uses DataFrame APIs to incrementally construct a huge query plan (200k+ nodes): each API call results in eager re-analysis of the plan, of which CTESubstitution accounts for the majority of the analysis time. This query didn't contain CTEs, so skipping the CTESubstitution significantly speeds up analysis.
> I plan to submit a patch for this.



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