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Posted to issues@spark.apache.org by "caican (Jira)" <ji...@apache.org> on 2022/03/16 03:03:00 UTC

[jira] [Updated] (SPARK-38559) display the number of empty partitions on spark ui

     [ https://issues.apache.org/jira/browse/SPARK-38559?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

caican updated SPARK-38559:
---------------------------
    Summary: display the number of empty partitions on spark ui  (was: display number of empty partitions on spark ui)

> 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
>
>
> When demoting join from broadcast-hash to smj, i think it is necessary to display 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!



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