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Posted to issues@spark.apache.org by "Vladimir Feinberg (JIRA)" <ji...@apache.org> on 2016/06/16 16:47:05 UTC

[jira] [Created] (SPARK-15989) PySpark SQL python-only UDTs don't support nested types

Vladimir Feinberg created SPARK-15989:
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             Summary: 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
    Affects Versions: 2.0.0
            Reporter: Vladimir Feinberg
            Priority: Blocker


[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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