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https://issues.apache.org/jira/browse/SPARK-26335?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16719775#comment-16719775
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Hyukjin Kwon commented on SPARK-26335:
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Hm, I don't think Dataset#show is supposed to be used to be parsed. It's rather
for just showing a pretty print. To make HTML table, I think you should use
collect or copy some methods in Spark into your project to make it pretty.
> Add an option for Dataset#show not to care about wide characters when padding
> them
> ----------------------------------------------------------------------------------
>
> Key: SPARK-26335
> URL: https://issues.apache.org/jira/browse/SPARK-26335
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 2.4.0
> Reporter: Keiji Yoshida
> Priority: Major
> Attachments: Screen Shot 2018-12-11 at 17.53.54.png
>
>
> h2. Issue
> https://issues.apache.org/jira/browse/SPARK-25108 makes Dataset#show care
> about wide characters when padding them. That is useful for humans to read a
> result of Dataset#show. On the other hand, that makes it impossible for
> programs to parse a result of Dataset#show because each cell's length can be
> different from its header's length. My company develops and manages a
> Jupyter/Apache Zeppelin-like visualization tool named "OASIS"
> ([https://databricks.com/session/oasis-collaborative-data-analysis-platform-using-apache-spark]).
> On this application, a result of Dataset#show on a Scala or Python process
> is parsed to visualize it as an HTML table format. (A screenshot of OASIS has
> been attached to this ticket as a file named "Screen Shot 2018-12-11 at
> 17.53.54.png".)
> h2. Solution
> Add an option for Dataset#show not to care about wide characters when padding
> them.
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