Github user davies commented on a diff in the pull request:
https://github.com/apache/spark/pull/4528#discussion_r24518769
--- Diff: python/pyspark/sql/types.py ---
@@ -188,6 +199,8 @@ class IntegerType(PrimitiveType):
The data type representing int values.
"""
+ def simpleString(self):
+ return 'int'
--- End diff --
There are dumped as JSON, passed into JVM, parsed again.
The good part is that we could infer the schema in pure Python (also in
workers, it's necessary to infer the schema on many rows of the RDD), the bad
part is that we have duplicated code in Python and Scala.
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