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Posted to issues@spark.apache.org by "Wenchen Fan (Jira)" <ji...@apache.org> on 2025/12/22 09:58:00 UTC

[jira] [Resolved] (SPARK-54735) Properly preserve column comments in view with SCHEMA EVOLUTION

     [ https://issues.apache.org/jira/browse/SPARK-54735?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Wenchen Fan resolved SPARK-54735.
---------------------------------
    Fix Version/s: 4.2.0
       Resolution: Fixed

Issue resolved by pull request 53508
[https://github.com/apache/spark/pull/53508]

> Properly preserve column comments in view with SCHEMA EVOLUTION
> ---------------------------------------------------------------
>
>                 Key: SPARK-54735
>                 URL: https://issues.apache.org/jira/browse/SPARK-54735
>             Project: Spark
>          Issue Type: Sub-task
>          Components: Spark Core
>    Affects Versions: 4.0.0
>            Reporter: Milan Dankovic
>            Assignee: Milan Dankovic
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 4.2.0
>
>
> When user creates a view with {{{}SCHEMA EVOLUTION{}}}, and then changes the comments on view columns, by using {{{}DESCRIBE{}}}, they are able to see new comments, but after executing a query on a view, comment values are reversed to a values from the underlying table (schema evolution enabled).



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