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https://issues.apache.org/jira/browse/SPARK-20023?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15937670#comment-15937670
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chenerlu commented on SPARK-20023:
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Hi, I review the PR and test this PR, then I found table comment can not be
changed once it specified in "create table comment", users can not modify the
table comment using alter table set tblproperties ("Comment" = "I will change
the table comment") like before, I think we you offer the relative sql or
interface for users to change table comment in the condition when specify table
comment by mistake.Is this a bug or we have better solution？
[~cloud_fan] [~smilegator] [~ZenWzh]
> Can not see table comment when describe formatted table
> -------------------------------------------------------
>
> Key: SPARK-20023
> URL: https://issues.apache.org/jira/browse/SPARK-20023
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 2.0.0
> Reporter: chenerlu
> Assignee: Xiao Li
> Fix For: 2.2.0
>
>
> Spark 2.x implements create table by itself.
> https://github.com/apache/spark/commit/7d2ed8cc030f3d84fea47fded072c320c3d87ca7
> But in the implement mentioned above, it remove table comment from
> properties, so user can not see table comment through run "describe formatted
> table". Similarly, when user alters table comment, he still can not see the
> change of table comment through run "describe formatted table".
> I wonder why we removed table comments, is this a bug?
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