Github user davies commented on a diff in the pull request:
https://github.com/apache/spark/pull/2983#discussion_r19680835
--- Diff: python/pyspark/sql.py ---
@@ -439,9 +462,17 @@ def _parse_datatype_json_string(json_string):
return _parse_datatype_json_value(json.loads(json_string))
+_FIXED_DECIMAL = re.compile("decimal\\((\\d+),(\\d+)\\)")
+
+
def _parse_datatype_json_value(json_value):
if type(json_value) is unicode and json_value in
_all_primitive_types.keys():
return _all_primitive_types[json_value]()
+ elif type(json_value) is unicode and json_value == u'decimal':
+ return DecimalType()
+ elif type(json_value) is unicode and _FIXED_DECIMAL.match(json_value):
+ m = _FIXED_DECIMAL.match(json_value)
+ return DecimalType(int(m.group(1)), int(m.group(2)))
--- End diff --
Could you change these into two levels and raise exception if json_value is
unicode but can not recognize the value?
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