[jira] [Resolved] (SPARK-45755) Push down limit through Dataset.isEmpty()

["Jiaan Geng (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-45755?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jiaan Geng resolved SPARK-45755.
--------------------------------
    Fix Version/s: 4.0.0
       Resolution: Fixed

Issue resolved by pull request 43617
[https://github.com/apache/spark/pull/43617]

> Push down limit through Dataset.isEmpty()
> -----------------------------------------
>
>                 Key: SPARK-45755
>                 URL: https://issues.apache.org/jira/browse/SPARK-45755
>             Project: Spark
>          Issue Type: Bug
>          Components: SQL
>    Affects Versions: 4.0.0
>            Reporter: Yuming Wang
>            Assignee: Yuming Wang
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 4.0.0
>
>
> Push down LocalLimit can not optimize the case of distinct.
> {code:scala}
>   def isEmpty: Boolean = withAction("isEmpty",
>     withTypedPlan { LocalLimit(Literal(1), select().logicalPlan) }.queryExecution) { plan =>
>     plan.executeTake(1).isEmpty
>   }
> {code}



--
This message was sent by Atlassian Jira
(v8.20.10#820010)

---------------------------------------------------------------------
To unsubscribe, e-mail: issues-unsubscribe@spark.apache.org
For additional commands, e-mail: issues-help@spark.apache.org