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Posted to issues@spark.apache.org by "Hyukjin Kwon (Jira)" <ji...@apache.org> on 2019/12/09 11:51:00 UTC
[jira] [Commented] (SPARK-26433) Tail method for spark DataFrame
[ https://issues.apache.org/jira/browse/SPARK-26433?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16991520#comment-16991520 ]
Hyukjin Kwon commented on SPARK-26433:
--------------------------------------
Looking back this JIRA, I realised that I underestimated it given multiple requests and other systems. I re-created a JIRA and made a PR.
> Tail method for spark DataFrame
> -------------------------------
>
> Key: SPARK-26433
> URL: https://issues.apache.org/jira/browse/SPARK-26433
> Project: Spark
> Issue Type: New Feature
> Components: PySpark
> Affects Versions: 2.4.0
> Reporter: Jan Gorecki
> Priority: Major
>
> There is a head method for spark dataframes which work fine but there doesn't seems to be tail method.
> ```
> >>> ans
> DataFrame[v1: bigint]
> >>> ans.head(3)
> [Row(v1=299443), Row(v1=299493), Row(v1=300751)]
> >>> ans.tail(3)
> Traceback (most recent call last):
> File "<stdin>", line 1, in <module>
> File "/home/jan/git/db-benchmark/spark/py-spark/lib/python3.6/site-packages/py
> spark/sql/dataframe.py", line 1300, in __getattr__
> "'%s' object has no attribute '%s'" % (self.__class__.__name__, name))
> AttributeError: 'DataFrame' object has no attribute 'tail'
> ```
> I would like to feature request Tail method for spark dataframe
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