WeichenXu123 commented on a change in pull request #32245:
URL: https://github.com/apache/spark/pull/32245#discussion_r617131553
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File path: python/pyspark/ml/tests/test_algorithms.py
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@@ -115,6 +115,7 @@ def test_output_columns(self):
model = ovr.fit(df)
output = model.transform(df)
self.assertEqual(output.columns, ["label", "features",
"rawPrediction", "prediction"])
+ self.assertIsInstance(output.schema["rawPrediction"].dataType,
VectorUDT)
Review comment:
Let's add a test of running "model.transform(df).head()", ensure it do
not raise error.
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