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https://issues.apache.org/jira/browse/SPARK-43586?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Yang Jie updated SPARK-43586:
-----------------------------
    Priority: Minor  (was: Major)

> There will be many invalid tasks when `Range.numSlices` > `Range.numElements`
> -----------------------------------------------------------------------------
>
>                 Key: SPARK-43586
>                 URL: https://issues.apache.org/jira/browse/SPARK-43586
>             Project: Spark
>          Issue Type: Improvement
>          Components: SQL
>    Affects Versions: 3.5.0
>            Reporter: Yang Jie
>            Priority: Minor
>         Attachments: image-2023-05-19-13-01-19-589.png
>
>
> For example, start a spark shell with `--master "local[100]"`, then run 
> `spark.range(10).map(_ + 1).reduce(_ + _)`, there will be 100 tasks in the 
> job, although there are only 10 elements in the Range:
> !image-2023-05-19-13-01-19-589.png|width=733,height=203!
>  



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