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https://issues.apache.org/jira/browse/SPARK-15733?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15312711#comment-15312711
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Apache Spark commented on SPARK-15733:
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User 'clockfly' has created a pull request for this issue:
https://github.com/apache/spark/pull/13470
> Makes the explain output less verbose by hiding some verbose output like
> None, null, empty List, and etc..
> ----------------------------------------------------------------------------------------------------------
>
> Key: SPARK-15733
> URL: https://issues.apache.org/jira/browse/SPARK-15733
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Reporter: Sean Zhong
> Priority: Minor
>
> In the output of {{dataframe.explain()}}, we often see verbose string pattern
> like {{None, [], {}, null, Some(tableName)}}.
> For example, for {{spark.sql("show tables").explain()}}, we get:
> {code}
> == Physical Plan ==
> ExecutedCommand
> : +- ShowTablesCommand None, None
> {code}
> It will be easier to read if we can optimize it to:
> {code}
> == Physical Plan ==
> ExecutedCommand
> : +- ShowTablesCommand
> {code}
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