Github user zero323 commented on a diff in the pull request:
https://github.com/apache/spark/pull/16533#discussion_r95548421
--- Diff: python/pyspark/sql/tests.py ---
@@ -429,6 +429,17 @@ def test_udf_with_input_file_name(self):
row =
self.spark.read.json(filePath).select(sourceFile(input_file_name())).first()
self.assertTrue(row[0].find("people1.json") != -1)
+ def test_udf_with_decorator(self):
+ from pyspark.sql.decorators import udf
+ from pyspark.sql.types import IntegerType
+
+ @udf(IntegerType())
--- End diff --
It does. In general decorators with arguments should be called with empty
parens. This call is equivalent to:
udf()(truncate)
We can support parentheses-less call but it requires a bit ugly checks on
runtime. I'll push an example implementation and additional tests in a moment.
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