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Posted to issues@spark.apache.org by "Apache Spark (Jira)" <ji...@apache.org> on 2022/12/21 20:53:00 UTC

[jira] [Assigned] (SPARK-41669) Speed up CollapseProject for wide tables

     [ https://issues.apache.org/jira/browse/SPARK-41669?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Apache Spark reassigned SPARK-41669:
------------------------------------

    Assignee:     (was: Apache Spark)

> Speed up CollapseProject for wide tables
> ----------------------------------------
>
>                 Key: SPARK-41669
>                 URL: https://issues.apache.org/jira/browse/SPARK-41669
>             Project: Spark
>          Issue Type: Improvement
>          Components: SQL
>    Affects Versions: 3.4.0
>            Reporter: Allison Wang
>            Priority: Major
>
> Currently, CollapseProject can be very slow when the project list contains a large number of expressions. We can speed this up by doing early pruning in `canCollapseExpressions`.



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