Hyukjin Kwon created SPARK-61074:
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Summary: Write the collations of string fields in the metadata of
the JSON of a StructType in the Python client as PySpark does
Key: SPARK-61074
URL: https://issues.apache.org/jira/browse/SPARK-61074
Project: Spark
Issue Type: Bug
Components: Connect
Affects Versions: connect-rust-4.3.0
Reporter: Hyukjin Kwon
In PySpark Connect, {{StructType.json()}} and {{jsonValue()}} write the
collation of a string field, also of one in an array or a map, in the
{{__COLLATIONS}} of the metadata of the field, as Spark does, with the type of
the field as "string":
{{{"metadata":{"__COLLATIONS":{"s":"spark.UTF8_LCASE"}},"name":"s",...,"type":"string"}}}.
The Rust-backed Python client writes the type of the field as "string collate
UTF8_LCASE", without the metadata. Write them as PySpark does.
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