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Posted to issues@spark.apache.org by "Hyukjin Kwon (Jira)" <ji...@apache.org> on 2022/08/10 01:21:00 UTC

[jira] [Commented] (SPARK-40011) Pandas API on Spark requires Pandas

    [ https://issues.apache.org/jira/browse/SPARK-40011?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17577693#comment-17577693 ] 

Hyukjin Kwon commented on SPARK-40011:
--------------------------------------

Pandas API on Spark needs that because it reuses several metadata objects from pandas, and that's explicitly declared at https://github.com/apache/spark/blob/master/python/setup.py#L271-L275.

> Pandas API on Spark requires Pandas
> -----------------------------------
>
>                 Key: SPARK-40011
>                 URL: https://issues.apache.org/jira/browse/SPARK-40011
>             Project: Spark
>          Issue Type: Bug
>          Components: Pandas API on Spark
>    Affects Versions: 3.3.0
>            Reporter: Daniel Oakley
>            Priority: Major
>
> Pandas API on Spark includes code like:
> > import pandas as pd
> > from pandas.api.types import is_hashable, is_list_like  # type: ignore[attr-defined]
> This breaks if you don't have pandas installed on your Spark cluster.
> Pandas API was supposed to be an API not pandas integration, why does it require pandas to be installed?
> In many places Spark jobs may be run on various Spark clusters with no assurance of particular Python packages installed at a root level. 
> Can this dependency be removed? Or the required version of Pandas be bundled with the Spark distribution? Similar for numpy and other deps.
> If not the docs should clearly state it is not merely a Spark API that mirror the Pandas API, but something quite different.
>  
>  



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