cfmcgrady commented on a change in pull request #23900:
URL: https://github.com/apache/spark/pull/23900#discussion_r426568363
##########
File path: python/pyspark/sql/types.py
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@@ -1616,6 +1616,12 @@ def to_arrow_type(dt):
if type(dt.elementType) == TimestampType:
raise TypeError("Unsupported type in conversion to Arrow: " +
str(dt))
arrow_type = pa.list_(to_arrow_type(dt.elementType))
+ elif type(dt) == StructType:
+ if any(type(field.dataType) == StructType for field in dt):
+ raise TypeError("Nested StructType not supported in conversion to
Arrow")
Review comment:
I am curious why `ArrayType(elementType = StructType)` support was
removed from here? @BryanCutler
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