Github user viirya commented on a diff in the pull request:
https://github.com/apache/spark/pull/21671#discussion_r199343003
--- Diff: python/pyspark/sql/functions.py ---
@@ -2163,9 +2163,9 @@ def json_tuple(col, *fields):
@since(2.1)
def from_json(col, schema, options={}):
"""
- Parses a column containing a JSON string into a :class:`MapType` with
:class:`StringType`
- as keys type, :class:`StructType` or :class:`ArrayType` of
:class:`StructType`\\s with
- the specified schema. Returns `null`, in the case of an unparseable
string.
+ Parses a column containing a JSON string into a :class:`MapType`,
:class:`StructType`
+ or :class:`ArrayType` of :class:`StructType`\\s with the specified
schema. Returns
+ `null`, in the case of an unparseable string.
--- End diff --
I think only string key of MapType is supported, isn't? Boolean key or
timestamp key to be failed, isn't as expected?
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