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https://issues.apache.org/jira/browse/SPARK-24442?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16497087#comment-16497087
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Reynold Xin commented on SPARK-24442:
-------------------------------------
Actually a pretty good idea. I've often wished there's a way to change it.
I'd name it `spark.sql.show.defaultNumRows` though.
> Add configuration parameter to adjust the numbers of records and the charters
> per row before truncation when a user runs.show()
> -------------------------------------------------------------------------------------------------------------------------------
>
> Key: SPARK-24442
> URL: https://issues.apache.org/jira/browse/SPARK-24442
> Project: Spark
> Issue Type: Improvement
> Components: Input/Output
> Affects Versions: 2.2.0, 2.3.0
> Reporter: Andrew K Long
> Priority: Minor
> Fix For: 2.4.0
>
> Attachments: spark-adjustable-display-size.diff
>
> Original Estimate: 12h
> Remaining Estimate: 12h
>
> Currently the number of characters displayed when a user runs the .show()
> function on a data frame is hard coded. The current default is too small when
> used with wider console widths. This fix will add two parameters.
>
> parameter: "spark.show.default.number.of.rows" default: "20"
> parameter: "spark.show.default.truncate.characters.per.column" default: "20"
>
> This change will be backwords compatible and will not break any existing
> functionality nor change the default display characteristics.
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