WeichenXu123 commented on a change in pull request #32245:
URL: https://github.com/apache/spark/pull/32245#discussion_r616357907
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File path: python/pyspark/ml/classification.py
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@@ -3151,7 +3151,7 @@ def func(predictions):
predArray.append(x)
return Vectors.dense(predArray)
- rawPredictionUDF = udf(func)
Review comment:
@HyukjinKwon
why only `transformed_df.head()` trigger this error ?
does it indicate bugs in pyspark-sql udf ?
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