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https://issues.apache.org/jira/browse/HIVE-21414?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16954656#comment-16954656
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David Mollitor commented on HIVE-21414:
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[~pvary] No. There is structure to the JSON file, but it does not actually
carry with it the actual schema (including the comments). I have had several
customers caught by surprise that the comments they put in the table definition
(successfully) are not returned when they issue a subsequent DESCRIBE table. I
agree. That is confusing.
> Hive JSON SerDe Does Not Properly Handle Field Comments
> -------------------------------------------------------
>
> Key: HIVE-21414
> URL: https://issues.apache.org/jira/browse/HIVE-21414
> Project: Hive
> Issue Type: Improvement
> Components: Serializers/Deserializers
> Affects Versions: 4.0.0, 3.2.0
> Reporter: David Mollitor
> Assignee: David Mollitor
> Priority: Minor
> Attachments: HIVE-21414.1.patch, HIVE-21414.1.patch
>
>
> Field comments are handed to the JSON SerDe from HMS and then are ignored.
> The result is that all field comments are 'from deserializer' and cannot be
> changed.
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