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Posted to issues@spark.apache.org by "7mming7 (Jira)" <ji...@apache.org> on 2023/07/05 03:54:00 UTC

[jira] [Commented] (SPARK-44305) Broadcast operation is not required when no parameters are specified

    [ https://issues.apache.org/jira/browse/SPARK-44305?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17740018#comment-17740018 ] 

7mming7 commented on SPARK-44305:
---------------------------------

cc [~yuming]  

> Broadcast operation is not required when no parameters are specified
> --------------------------------------------------------------------
>
>                 Key: SPARK-44305
>                 URL: https://issues.apache.org/jira/browse/SPARK-44305
>             Project: Spark
>          Issue Type: Improvement
>          Components: SQL
>    Affects Versions: 3.2.0
>            Reporter: 7mming7
>            Priority: Minor
>         Attachments: image-2023-07-05-11-51-41-708.png
>
>
> The ability introduced by SPARK-14912, we can broadcast the parameters of the data source to the read and write operations, but if the user does not specify a specific parameter, the propagation operation will also be performed, which affects the performance has a greater impact, so we need to avoid broadcasting the full Hadoop parameters when the user does not specify a specific parameter
>  
> !image-2023-07-05-11-51-41-708.png!



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