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https://issues.apache.org/jira/browse/SPARK-15989?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sean Owen updated SPARK-15989:
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Assignee: Liang-Chi Hsieh
> PySpark SQL python-only UDTs don't support nested types
> -------------------------------------------------------
>
> Key: SPARK-15989
> URL: https://issues.apache.org/jira/browse/SPARK-15989
> Project: Spark
> Issue Type: Bug
> Components: PySpark, SQL
> Affects Versions: 2.0.0
> Reporter: Vladimir Feinberg
> Assignee: Liang-Chi Hsieh
> Fix For: 2.0.1, 2.1.0
>
>
> [This
> notebook|https://databricks-prod-cloudfront.cloud.databricks.com/public/4027ec902e239c93eaaa8714f173bcfc/6001574963454425/611202526513296/1653464426712019/latest.html]
> demonstrates the bug.
> The obvious issue is that nested UDTs are not supported if the UDT is
> Python-only. Looking at the exception thrown, this seems to be because the
> encoder on the Java end tries to encode the UDT as a Java class, which
> doesn't exist for the [[PythonOnlyUDT]].
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