1 files changed, 9 insertions, 0 deletions
diff --git a/python/pyspark/sql/tests.py b/python/pyspark/sql/tests.py
index 83899ad4b1..2720439416 100644
--- a/python/pyspark/sql/tests.py
+++ b/python/pyspark/sql/tests.py
@@ -24,6 +24,7 @@ import sys
 import pydoc
 import shutil
 import tempfile
+import pickle
 
 import py4j
 
@@ -88,6 +89,14 @@ class ExamplePoint:
             other.x == self.x and other.y == self.y
 
 
+class DataTypeTests(unittest.TestCase):
+    # regression test for SPARK-6055
+    def test_data_type_eq(self):
+        lt = LongType()
+        lt2 = pickle.loads(pickle.dumps(LongType()))
+        self.assertEquals(lt, lt2)
+
+
 class SQLTests(ReusedPySparkTestCase):
 
     @classmethod