zhengruifeng commented on code in PR #46300:
URL: https://github.com/apache/spark/pull/46300#discussion_r1584596015
##########
python/pyspark/sql/connect/udf.py:
##########
@@ -148,15 +150,35 @@ def __init__(
)
self.func = func
- self.returnType: DataType = (
- UnparsedDataType(returnType) if isinstance(returnType, str) else
returnType
- )
+ self._returnType = returnType
+ self._returnType_placeholder: Optional[DataType] = None
self._name = name or (
func.__name__ if hasattr(func, "__name__") else
func.__class__.__name__
)
self.evalType = evalType
self.deterministic = deterministic
+ @property
+ def returnType(self) -> DataType:
Review Comment:
in Spark Classic, it assume `this is called after SparkContext is
initialized`.
I am not sure whether we can make similar assumptions here.
In
https://github.com/apache/spark/commit/c0b1735c0bfeb1ff645d146e262d7ccd036a590e,
it is by design to delays parsing DDL string.
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