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https://issues.apache.org/jira/browse/SPARK-61091?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Hyukjin Kwon updated SPARK-61091:
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Fix Version/s: connect-rust-4.3.0
> Return the NamedTuples of pyspark.sql.catalog from Catalog, and register
> functions with registerFunction, in the Python client as PySpark does
> ----------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: SPARK-61091
> URL: https://issues.apache.org/jira/browse/SPARK-61091
> Project: Spark
> Issue Type: Bug
> Components: Connect
> Affects Versions: connect-rust-4.3.0
> Reporter: Hyukjin Kwon
> Priority: Major
> Fix For: connect-rust-4.3.0
>
>
> In PySpark Connect, the methods of {{spark.catalog}} return the NamedTuples
> of {{pyspark.sql.catalog}}: {{CatalogMetadata}}, {{Database}}, {{Table}} (of
> its {{database}} property), {{Column}}, {{Function}} and {{TablePartition}},
> which are tuples ({{_fields}}, {{_asdict}}, indexing, unpacking and equality
> of tuples). {{Catalog.registerFunction(name, f, returnType)}} warns its
> {{FutureWarning}} ("Deprecated in 2.3.0. Use spark.udf.register instead.")
> and registers the function with {{spark.udf.register}}.
> The Rust-backed Python client returns classes of its own, which are not
> tuples (they have no {{_fields}}), names the class of a column
> {{CatalogColumn}}, and its {{registerFunction}} raises {{NOT_EXPECTED_TYPE}}
> of {{evalType}}. Return them, and register the functions, as PySpark does.
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