Github user HyukjinKwon commented on a diff in the pull request:
https://github.com/apache/spark/pull/13576#discussion_r66569746
--- Diff: python/pyspark/sql/readwriter.py ---
@@ -327,6 +334,8 @@ def csv(self, path, schema=None, sep=None,
encoding=None, quote=None, escape=Non
character. By default (None), it is disabled.
:param header: uses the first line as names of columns. If None is
set, it uses the
default value, ``false``.
+ :param inferSchema: infers the input schema automatically from
data. It requires one extra
--- End diff --
Yes, it will be off (so I wrote some comments above). However, thing is
about `header`. If `inferSchema` option is removed and it is only enabled when
the schema is set, there would be no way to not infer schema (meaning all
string columns) but only use column names in the header.
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