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https://issues.apache.org/jira/browse/SPARK-26335?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Keiji Yoshida updated SPARK-26335:
----------------------------------
    Description: 
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 a property for Dataset#show not to care about wide characters when padding 
them.

  was:
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.


> Add a property 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 a property for Dataset#show not to care about wide characters when 
> padding them.



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