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https://issues.apache.org/jira/browse/SPARK-10824?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14908380#comment-14908380
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Shivaram Venkataraman commented on SPARK-10824:
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[~Narine] We discussed this in https://issues.apache.org/jira/browse/SPARK-9317
and specifically in the github PR
https://github.com/apache/spark/pull/8360#issuecomment-133516179
As described in the PR comment this needs a more involved change on the SQL
side to see if the data frame is cheap to print or as we don't want to trigger
expensive computation in this case.
cc [~rxin]
> DataFrame show method - show(df) should show first N number of rows, similar
> to R
> ---------------------------------------------------------------------------------
>
> Key: SPARK-10824
> URL: https://issues.apache.org/jira/browse/SPARK-10824
> Project: Spark
> Issue Type: Sub-task
> Components: SparkR
> Reporter: Narine Kokhlikyan
> Priority: Minor
>
> Hi everyone,
> currently, show(dataframe) method shows some information about the columns
> and their datatypes, however R shows the first N number of rows in dataframe.
> Basically, the same as showDF. Right now I changed so that show calls showDF.
> Also, the default number of rows was hard coded in DataFrame.R, I set it as
> environment variable in sparkR.R. We can change it if you have other better
> suggestions.
> Thanks,
> Narine
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