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https://issues.apache.org/jira/browse/SPARK-38559?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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caican updated SPARK-38559:
---------------------------
Description:
When demoting join from broadcast-hash to smj, i think it is necessary to
display the number of empty partitions on spark ui.
Otherwise, users might wonder why SMJ is used when joining a small table.
Displaying the number of empty partitions is useful for users to understand
changes to the execution plan.
Before updated the ui:)
!image-2022-03-16-10-56-46-446.png!
After updated the ui, display the number of empty partitions:)
!image-2022-03-16-11-07-39-182.png!
was:
When demoting join from broadcast-hash to smj, i think it is necessary to
display the number of empty partitions on spark ui.
Otherwise, users might wonder why SMJ is used when joining a small table.
Displaying the number of empty partitions is useful for users to understand
changes to the execution plan.
Before modify the ui：
!image-2022-03-16-10-56-46-446.png!
> display the number of empty partitions on spark ui
> --------------------------------------------------
>
> Key: SPARK-38559
> URL: https://issues.apache.org/jira/browse/SPARK-38559
> Project: Spark
> Issue Type: Improvement
> Components: SQL, Web UI
> Affects Versions: 3.1.2
> Reporter: caican
> Priority: Major
> Attachments: image-2022-03-16-10-56-46-446.png,
> image-2022-03-16-11-07-39-182.png
>
>
> When demoting join from broadcast-hash to smj, i think it is necessary to
> display the number of empty partitions on spark ui.
> Otherwise, users might wonder why SMJ is used when joining a small table.
> Displaying the number of empty partitions is useful for users to understand
> changes to the execution plan.
> Before updated the ui:)
> !image-2022-03-16-10-56-46-446.png!
> After updated the ui, display the number of empty partitions:)
> !image-2022-03-16-11-07-39-182.png!
>
>
>
>
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