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https://issues.apache.org/jira/browse/SPARK-61138?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Hyukjin Kwon resolved SPARK-61138.
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Resolution: Fixed
Issue resolved by pull request 327
[https://github.com/apache/spark-connect-rust/pull/327]
> Make str of a VariantVal its JSON, and createDataFrame reject rows that are
> VariantVals, in the Python client as PySpark does
> -----------------------------------------------------------------------------------------------------------------------------
>
> Key: SPARK-61138
> URL: https://issues.apache.org/jira/browse/SPARK-61138
> Project: Spark
> Issue Type: Bug
> Components: Connect
> Affects Versions: connect-rust-4.3.0
> Reporter: Hyukjin Kwon
> Assignee: Hyukjin Kwon
> Priority: Major
> Labels: pull-request-available
> Fix For: connect-rust-4.3.0
>
>
> PySpark's VariantVal.__str__ is its JSON (VariantUtils.to_json, as toJson),
> while its __repr__ is "VariantVal(value, metadata)". The client's VariantVal
> has no __str__, so str(v) is its repr of bytes.
> Also, PySpark's createDataFrame raises PySparkValueError "Rows cannot be of
> type VariantVal" for rows that are VariantVals, such as
> createDataFrame([VariantVal.parseJson("2")], "v variant"), also without a
> schema or of the schema "variant". A VariantVal of PySpark has a __dict__, so
> it is taken as a row (to_row of LocalDataToArrowConversion). The client's
> VariantVal has none, so the client took it as a value: a DataFrame of one row.
> Apache Spark's test_variant_type fails on this client. The client's str of a
> VariantVal should be its JSON, and its createDataFrame should reject the rows
> that are VariantVals, as PySpark's does.
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