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https://issues.apache.org/jira/browse/SPARK-47132?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Xinrong Meng updated SPARK-47132:
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Affects Version/s: 4.0.0
(was: 3.5.0)
> Mistake in Docstring for Pyspark's Dataframe.head()
> ---------------------------------------------------
>
> Key: SPARK-47132
> URL: https://issues.apache.org/jira/browse/SPARK-47132
> Project: Spark
> Issue Type: Documentation
> Components: PySpark
> Affects Versions: 4.0.0
> Reporter: Albert Ziegler
> Priority: Trivial
> Labels: pull-request-available
> Original Estimate: 0.5h
> Remaining Estimate: 0.5h
>
> The docstring claims that {{head(n)}} would return a {{Row}} (rather than a
> list of rows) iff n == 1, but that's incorrect.
> Type hints, example, and implementation show that the difference between row
> or list of rows lies in whether n is supplied at all -- if it isn't,
> {{head()}} returns a {{{}Row{}}}, if it is, even if it is 1, {{head(n)}}
> returns a list.
>
> A suggestion to fix is here: https://github.com/apache/spark/pull/45197
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