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From "John Sichi (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-2171) Allow custom serdes to set field comments
Date Fri, 29 Jul 2011 01:20:13 GMT

    [ https://issues.apache.org/jira/browse/HIVE-2171?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13072635#comment-13072635
] 

John Sichi commented on HIVE-2171:
----------------------------------

I'll take a look.

> Allow custom serdes to set field comments
> -----------------------------------------
>
>                 Key: HIVE-2171
>                 URL: https://issues.apache.org/jira/browse/HIVE-2171
>             Project: Hive
>          Issue Type: Improvement
>    Affects Versions: 0.7.0
>            Reporter: Jakob Homan
>            Assignee: Jakob Homan
>         Attachments: HIVE-2171.patch
>
>
> Currently, while serde implementations can set a field's name, they can't set its comment.
 These are set in the metastore utils to {{(from deserializer)}}.  For those serdes that can
provide meaningful comments for a field, they should be propagated to the table description.
 These serde-provided comments could be prepended to "(from deserializer)" if others feel
that's a meaningful distinction.  This change involves updating {{StructField}} to support
a (possibly null) comment field and then propagating this change out to the myriad places
{{StructField}} is thrown around.

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