HyukjinKwon commented on a change in pull request #33214:
URL: https://github.com/apache/spark/pull/33214#discussion_r663757786
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File path: python/pyspark/sql/types.py
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@@ -1020,10 +1020,19 @@ def _infer_type(obj):
return dataType()
if isinstance(obj, dict):
- for key, value in obj.items():
- if key is not None and value is not None:
- return MapType(_infer_type(key), _infer_type(value), True)
- return MapType(NullType(), NullType(), True)
+ from pyspark.sql.session import SparkSession
+ if (SparkSession._activeSession.conf.get(
+ "spark.sql.pyspark.inferNestedStructByMap").lower() == "true"):
Review comment:
Can you pass a bool argument to `_infer_type` (and `_infer_schema`), and
access to the configuration value like
https://github.com/apache/spark/blob/master/python/pyspark/sql/pandas/conversion.py#L79?
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