[jira] [Resolved] (SPARK-30829) Define LegacyBehaviorPolicy enumeration as the common value for result change configs

["Wenchen Fan (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-30829?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Wenchen Fan resolved SPARK-30829.
---------------------------------
    Fix Version/s: 3.0.0
       Resolution: Fixed

Issue resolved by pull request 27579
[https://github.com/apache/spark/pull/27579]

> Define LegacyBehaviorPolicy enumeration as the common value for result change configs
> -------------------------------------------------------------------------------------
>
>                 Key: SPARK-30829
>                 URL: https://issues.apache.org/jira/browse/SPARK-30829
>             Project: Spark
>          Issue Type: Sub-task
>          Components: SQL
>    Affects Versions: 3.0.0
>            Reporter: Yuanjian Li
>            Assignee: Yuanjian Li
>            Priority: Major
>             Fix For: 3.0.0
>
>
> During API auditing for the 3.0 release, we found several new approaches that will change the results silently. For these features, we create a common config value, which is a three-value enumeration. Whenever the new behavior will silently change the results, this config can be reused.
>  * Exception(default): Spark will throw an exception while result changes will happen, and remind users to choose between legacy and new behavior.
>  * New Behavior: Use the new approach.
>  * Legacy: Use the legacy behavior of earlier versions.



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