darcy-shen commented on a change in pull request #32332:
URL: https://github.com/apache/spark/pull/32332#discussion_r676400183
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File path: python/pyspark/sql/session.py
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@@ -695,9 +704,10 @@ def prepare(obj):
prepare = lambda obj: obj
Review comment:
> Seems like it does twice when the schema is specified.
When the schema is specified, `_inferSchema` and `_create_verified_converter
` will not be invoked
https://github.com/apache/spark/blob/c561ee686551690bee689f37ae5bbd75119994d6/python/pyspark/sql/session.py#L490-L493
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