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https://issues.apache.org/jira/browse/SPARK-27240?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Bryan Cutler resolved SPARK-27240.
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Resolution: Fixed
Fix Version/s: 3.0.0
Issue resolved by pull request 24177
https://github.com/apache/spark/pull/24177
> Use pandas DataFrame for struct type argument in Scalar Pandas UDF.
> -------------------------------------------------------------------
>
> Key: SPARK-27240
> URL: https://issues.apache.org/jira/browse/SPARK-27240
> Project: Spark
> Issue Type: Improvement
> Components: PySpark
> Affects Versions: 2.4.0
> Reporter: Takuya Ueshin
> Assignee: Takuya Ueshin
> Priority: Major
> Fix For: 3.0.0
>
>
> Now that we support returning pandas DataFrame for struct type in Scalar
> Pandas UDF.
> If we chain another Pandas UDF after the Scalar Pandas UDF returning pandas
> DataFrame, the argument of the chained UDF will be pandas DataFrame, but
> currently we don't support pandas DataFrame as an argument of Scalar Pandas
> UDF. That means there is an inconsistency between the chained UDF and the
> single UDF.
> We should support taking pandas DataFrame for struct type argument in Scala
> Pandas UDF to be consistent.
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